2000-05-01 13:42:38 +04:00
|
|
|
/**********************************************************************
|
1998-01-16 15:13:05 +03:00
|
|
|
|
|
|
|
util.c -
|
|
|
|
|
|
|
|
$Author$
|
|
|
|
$Date$
|
|
|
|
created at: Fri Mar 10 17:22:34 JST 1995
|
|
|
|
|
* encoding.c: provide basic features for M17N.
* parse.y: encoding aware parsing.
* parse.y (pragma_encoding): encoding specification pragma.
* parse.y (rb_intern3): encoding specified symbols.
* string.c (rb_str_length): length based on characters.
for older behavior, bytesize method added.
* string.c (rb_str_index_m): index based on characters. rindex as
well.
* string.c (succ_char): encoding aware succeeding string.
* string.c (rb_str_reverse): reverse based on characters.
* string.c (rb_str_inspect): encoding aware string description.
* string.c (rb_str_upcase_bang): encoding aware case conversion.
downcase, capitalize, swapcase as well.
* string.c (rb_str_tr_bang): tr based on characters. delete,
squeeze, tr_s, count as well.
* string.c (rb_str_split_m): split based on characters.
* string.c (rb_str_each_line): encoding aware each_line.
* string.c (rb_str_each_char): added. iteration based on
characters.
* string.c (rb_str_strip_bang): encoding aware whitespace
stripping. lstrip, rstrip as well.
* string.c (rb_str_justify): encoding aware justifying (ljust,
rjust, center).
* string.c (str_encoding): get encoding attribute from a string.
* re.c (rb_reg_initialize): encoding aware regular expression
* sprintf.c (rb_str_format): formatting (i.e. length count) based
on characters.
* io.c (rb_io_getc): getc to return one-character string.
for older behavior, getbyte method added.
* ext/stringio/stringio.c (strio_getc): ditto.
* io.c (rb_io_ungetc): allow pushing arbitrary string at the
current reading point.
* ext/stringio/stringio.c (strio_ungetc): ditto.
* ext/strscan/strscan.c: encoding support.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13261 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2007-08-25 07:29:39 +04:00
|
|
|
Copyright (C) 1993-2007 Yukihiro Matsumoto
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-05-01 13:42:38 +04:00
|
|
|
**********************************************************************/
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2007-06-10 07:06:15 +04:00
|
|
|
#include "ruby/ruby.h"
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2002-05-29 09:20:39 +04:00
|
|
|
#include <ctype.h>
|
1999-01-20 07:59:39 +03:00
|
|
|
#include <stdio.h>
|
2001-11-08 09:43:14 +03:00
|
|
|
#include <errno.h>
|
* sprintf.c (rb_str_format): allow %c to print one character
string (e.g. ?x).
* lib/tempfile.rb (Tempfile::make_tmpname): put dot between
basename and pid. [ruby-talk:196272]
* parse.y (do_block): remove -> style block.
* parse.y (parser_yylex): remove tLAMBDA_ARG.
* eval.c (rb_call0): binding for the return event hook should have
consistent scope. [ruby-core:07928]
* eval.c (proc_invoke): return behavior should depend whether it
is surrounded by a lambda or a mere block.
* eval.c (formal_assign): handles post splat arguments.
* eval.c (rb_call0): ditto.
* st.c (strhash): use FNV-1a hash.
* parse.y (parser_yylex): removed experimental ';;' terminator.
* eval.c (rb_node_arity): should be aware of post splat arguments.
* eval.c (rb_proc_arity): ditto.
* parse.y (f_args): syntax rule enhanced to support arguments
after the splat.
* parse.y (block_param): ditto for block parameters.
* parse.y (f_post_arg): mandatory formal arguments after the splat
argument.
* parse.y (new_args_gen): generate nodes for mandatory formal
arguments after the splat argument.
* eval.c (rb_eval): dispatch mandatory formal arguments after the
splat argument.
* parse.y (args): allow more than one splat in the argument list.
* parse.y (method_call): allow aref [] to accept all kind of
method argument, including assocs, splat, and block argument.
* eval.c (SETUP_ARGS0): prepare block argument as well.
* lib/mathn.rb (Integer): remove Integer#gcd2. [ruby-core:07931]
* eval.c (error_line): print receivers true/false/nil specially.
* eval.c (rb_proc_yield): handles parameters in yield semantics.
* eval.c (nil_yield): gives LocalJumpError to denote no block
error.
* io.c (rb_io_getc): now takes one-character string.
* string.c (rb_str_hash): use FNV-1a hash from Fowler/Noll/Vo
hashing algorithm.
* string.c (rb_str_aref): str[0] now returns 1 character string,
instead of a fixnum. [Ruby2]
* parse.y (parser_yylex): ?c now returns 1 character string,
instead of a fixnum. [Ruby2]
* string.c (rb_str_aset): no longer support fixnum insertion.
* eval.c (umethod_bind): should not update original class.
[ruby-dev:28636]
* eval.c (ev_const_get): should support constant access from
within instance_eval(). [ruby-dev:28327]
* time.c (time_timeval): should round for usec floating
number. [ruby-core:07896]
* time.c (time_add): ditto.
* dir.c (sys_warning): should not call a vararg function
rb_sys_warning() indirectly. [ruby-core:07886]
* numeric.c (flo_divmod): the first element of Float#divmod should
be an integer. [ruby-dev:28589]
* test/ruby/test_float.rb: add tests for divmod, div, modulo and remainder.
* re.c (rb_reg_initialize): should not allow modifying literal
regexps. frozen check moved from rb_reg_initialize_m as well.
* re.c (rb_reg_initialize): should not modify untainted objects in
safe levels higher than 3.
* re.c (rb_memcmp): type change from char* to const void*.
* dir.c (dir_close): should not close untainted dir stream.
* dir.c (GetDIR): add tainted/frozen check for each dir operation.
* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_symbol_arg):
typo fixed. a patch from Florian Gross <florg at florg.net>.
* eval.c (EXEC_EVENT_HOOK): trace_func may remove itself from
event_hooks. no guarantee for arbitrary hook deletion.
[ruby-dev:28632]
* util.c (ruby_strtod): differ addition to minimize error.
[ruby-dev:28619]
* util.c (ruby_strtod): should not raise ERANGE when the input
string does not have any digits. [ruby-dev:28629]
* eval.c (proc_invoke): should restore old ruby_frame->block.
thanks to ts <decoux at moulon.inra.fr>. [ruby-core:07833]
also fix [ruby-dev:28614] as well.
* signal.c (trap): sig should be less then NSIG. Coverity found
this bug. a patch from Kevin Tew <tewk at tewk.com>.
[ruby-core:07823]
* math.c (math_log2): add new method inspired by
[ruby-talk:191237].
* math.c (math_log): add optional base argument to Math::log().
[ruby-talk:191308]
* ext/syck/emitter.c (syck_scan_scalar): avoid accessing
uninitialized array element. a patch from Pat Eyler
<rubypate at gmail.com>. [ruby-core:07809]
* array.c (rb_ary_fill): initialize local variables first. a
patch from Pat Eyler <rubypate at gmail.com>. [ruby-core:07810]
* ext/syck/yaml2byte.c (syck_yaml2byte_handler): need to free
type_tag. a patch from Pat Eyler <rubypate at gmail.com>.
[ruby-core:07808]
* ext/socket/socket.c (make_hostent_internal): accept ai_family
check from Sam Roberts <sroberts at uniserve.com>.
[ruby-core:07691]
* util.c (ruby_strtod): should not cut off 18 digits for no
reason. [ruby-core:07796]
* array.c (rb_ary_fill): internalize local variable "beg" to
pacify Coverity. [ruby-core:07770]
* pack.c (pack_unpack): now supports CRLF newlines. a patch from
<tommy at tmtm.org>. [ruby-dev:28601]
* applied code clean-up patch from Stefan Huehner
<stefan at huehner.org>. [ruby-core:07764]
* lib/jcode.rb (String::tr_s): should have translated non
squeezing character sequence (i.e. a character) as well. thanks
to Hiroshi Ichikawa <gimite at gimite.ddo.jp> [ruby-list:42090]
* ext/socket/socket.c: document update patch from Sam Roberts
<sroberts at uniserve.com>. [ruby-core:07701]
* lib/mathn.rb (Integer): need not to remove gcd2. a patch from
NARUSE, Yui <naruse at airemix.com>. [ruby-dev:28570]
* parse.y (arg): too much NEW_LIST()
* eval.c (SETUP_ARGS0): remove unnecessary access to nd_alen.
* eval.c (rb_eval): use ARGSCAT for NODE_OP_ASGN1.
[ruby-dev:28585]
* parse.y (arg): use NODE_ARGSCAT for placeholder.
* lib/getoptlong.rb (GetoptLong::get): RDoc update patch from
mathew <meta at pobox.com>. [ruby-core:07738]
* variable.c (rb_const_set): raise error when no target klass is
supplied. [ruby-dev:28582]
* prec.c (prec_prec_f): documentation patch from
<gerardo.santana at gmail.com>. [ruby-core:07689]
* bignum.c (rb_big_pow): second operand may be too big even if
it's a Fixnum. [ruby-talk:187984]
* README.EXT: update symbol description. [ruby-talk:188104]
* COPYING: explicitly note GPLv2. [ruby-talk:187922]
* parse.y: remove some obsolete syntax rules (unparenthesized
method calls in argument list).
* eval.c (rb_call0): insecure calling should be checked for non
NODE_SCOPE method invocations too.
* eval.c (rb_alias): should preserve the current safe level as
well as method definition.
* process.c (rb_f_sleep): remove RDoc description about SIGALRM
which is not valid on the current implementation. [ruby-dev:28464]
Thu Mar 23 21:40:47 2006 K.Kosako <sndgk393 AT ybb.ne.jp>
* eval.c (method_missing): should support argument splat in
super. a bug in combination of super, splat and
method_missing. [ruby-talk:185438]
* configure.in: Solaris SunPro compiler -rapth patch from
<kuwa at labs.fujitsu.com>. [ruby-dev:28443]
* configure.in: remove enable_rpath=no for Solaris.
[ruby-dev:28440]
* ext/win32ole/win32ole.c (ole_val2olevariantdata): change behavior
of converting OLE Variant object with VT_ARRAY|VT_UI1 and Ruby
String object.
* ruby.1: a clarification patch from David Lutterkort
<dlutter at redhat.com>. [ruby-core:7508]
* lib/rdoc/ri/ri_paths.rb (RI::Paths): adding paths from rubygems
directories. a patch from Eric Hodel <drbrain at segment7.net>.
[ruby-core:07423]
* eval.c (rb_clear_cache_by_class): clearing wrong cache.
* ext/extmk.rb: use :remove_destination to install extension libraries
to avoid SEGV. [ruby-dev:28417]
* eval.c (rb_thread_fd_writable): should not re-schedule output
from KILLED thread (must be error printing).
* array.c (rb_ary_flatten_bang): allow specifying recursion
level. [ruby-talk:182170]
* array.c (rb_ary_flatten): ditto.
* gc.c (add_heap): a heap_slots may overflow. a patch from Stefan
Weil <weil at mail.berlios.de>.
* eval.c (rb_call): use separate cache for fcall/vcall
invocation.
* eval.c (rb_eval): NODE_FCALL, NODE_VCALL can call local
functions.
* eval.c (rb_mod_local): a new method to specify newly added
visibility "local".
* eval.c (search_method): search for local methods which are
visible only from the current class.
* class.c (rb_class_local_methods): a method to list local methods.
* object.c (Init_Object): add BasicObject class as a top level
BlankSlate class.
* ruby.h (SYM2ID): should not cast to signed long.
[ruby-core:07414]
* class.c (rb_include_module): allow module duplication.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10235 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2006-06-10 01:20:17 +04:00
|
|
|
#include <math.h>
|
|
|
|
#include <float.h>
|
1999-01-20 07:59:39 +03:00
|
|
|
|
* configure.in, defines.h, dir.c, dir.h, dln.c, error.c,
eval.c, file.c, hash.c, io.c, main.c, missing.c,
process.c, ruby.c, rubysig.h, signal.c, st.c, util.c, util.h,
bcc/Makefile.sub, win32/Makefile.sub, win32/win32.h,
ext/Win32API/Win32API.c, ext/socket/getaddrinfo.c,
ext/socket/getnameinfo.c, ext/socket/socket.c,
ext/tcltklib/stubs.c
: replace "NT" with "_WIN32", add DOSISH_DRIVE_LETTER
* wince/exe.mak : delete \r at the end of lines.
* wince/mswince-ruby17.def : delete rb_obj_become
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2002-12-15 06:18:08 +03:00
|
|
|
#ifdef _WIN32
|
1999-01-20 07:59:39 +03:00
|
|
|
#include "missing/file.h"
|
|
|
|
#endif
|
2007-08-27 10:33:12 +04:00
|
|
|
#if defined(__CYGWIN32__)
|
|
|
|
#define _open open
|
|
|
|
#define _close close
|
|
|
|
#define _unlink unlink
|
|
|
|
#define _access access
|
|
|
|
#elif defined(_WIN32)
|
|
|
|
#include <io.h>
|
|
|
|
#endif
|
1999-01-20 07:59:39 +03:00
|
|
|
|
2007-06-10 07:06:15 +04:00
|
|
|
#include "ruby/util.h"
|
1998-01-16 15:13:05 +03:00
|
|
|
|
|
|
|
unsigned long
|
2005-10-22 09:26:44 +04:00
|
|
|
ruby_scan_oct(const char *start, int len, int *retlen)
|
1998-01-16 15:13:05 +03:00
|
|
|
{
|
1999-08-13 09:45:20 +04:00
|
|
|
register const char *s = start;
|
1998-01-16 15:13:05 +03:00
|
|
|
register unsigned long retval = 0;
|
|
|
|
|
|
|
|
while (len-- && *s >= '0' && *s <= '7') {
|
|
|
|
retval <<= 3;
|
|
|
|
retval |= *s++ - '0';
|
|
|
|
}
|
|
|
|
*retlen = s - start;
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
unsigned long
|
2005-10-22 09:26:44 +04:00
|
|
|
ruby_scan_hex(const char *start, int len, int *retlen)
|
1998-01-16 15:13:05 +03:00
|
|
|
{
|
2001-11-28 17:56:32 +03:00
|
|
|
static char hexdigit[] = "0123456789abcdef0123456789ABCDEF";
|
1999-08-13 09:45:20 +04:00
|
|
|
register const char *s = start;
|
1998-01-16 15:13:05 +03:00
|
|
|
register unsigned long retval = 0;
|
|
|
|
char *tmp;
|
|
|
|
|
|
|
|
while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
|
|
|
|
retval <<= 4;
|
|
|
|
retval |= (tmp - hexdigit) & 15;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
*retlen = s - start;
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
1999-01-20 07:59:39 +03:00
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
|
|
#include <unistd.h>
|
|
|
|
#endif
|
1999-08-13 09:45:20 +04:00
|
|
|
#if defined(HAVE_FCNTL_H)
|
1998-01-16 15:13:05 +03:00
|
|
|
#include <fcntl.h>
|
1999-01-20 07:59:39 +03:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef S_ISDIR
|
|
|
|
# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
|
|
|
|
#endif
|
|
|
|
|
* configure.in, defines.h, dir.c, dir.h, dln.c, error.c,
eval.c, file.c, hash.c, io.c, main.c, missing.c,
process.c, ruby.c, rubysig.h, signal.c, st.c, util.c, util.h,
bcc/Makefile.sub, win32/Makefile.sub, win32/win32.h,
ext/Win32API/Win32API.c, ext/socket/getaddrinfo.c,
ext/socket/getnameinfo.c, ext/socket/socket.c,
ext/tcltklib/stubs.c
: replace "NT" with "_WIN32", add DOSISH_DRIVE_LETTER
* wince/exe.mak : delete \r at the end of lines.
* wince/mswince-ruby17.def : delete rb_obj_become
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2002-12-15 06:18:08 +03:00
|
|
|
#if defined(MSDOS) || defined(__CYGWIN32__) || defined(_WIN32)
|
1998-01-16 15:13:05 +03:00
|
|
|
/*
|
|
|
|
* Copyright (c) 1993, Intergraph Corporation
|
|
|
|
*
|
|
|
|
* You may distribute under the terms of either the GNU General Public
|
|
|
|
* License or the Artistic License, as specified in the perl README file.
|
|
|
|
*
|
|
|
|
* Various Unix compatibility functions and NT specific functions.
|
|
|
|
*
|
|
|
|
* Some of this code was derived from the MSDOS port(s) and the OS/2 port.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Suffix appending for in-place editing under MS-DOS and OS/2 (and now NT!).
|
|
|
|
*
|
|
|
|
* Here are the rules:
|
|
|
|
*
|
|
|
|
* Style 0: Append the suffix exactly as standard perl would do it.
|
|
|
|
* If the filesystem groks it, use it. (HPFS will always
|
|
|
|
* grok it. So will NTFS. FAT will rarely accept it.)
|
|
|
|
*
|
|
|
|
* Style 1: The suffix begins with a '.'. The extension is replaced.
|
|
|
|
* If the name matches the original name, use the fallback method.
|
|
|
|
*
|
|
|
|
* Style 2: The suffix is a single character, not a '.'. Try to add the
|
|
|
|
* suffix to the following places, using the first one that works.
|
|
|
|
* [1] Append to extension.
|
|
|
|
* [2] Append to filename,
|
|
|
|
* [3] Replace end of extension,
|
|
|
|
* [4] Replace end of filename.
|
|
|
|
* If the name matches the original name, use the fallback method.
|
|
|
|
*
|
|
|
|
* Style 3: Any other case: Ignore the suffix completely and use the
|
|
|
|
* fallback method.
|
|
|
|
*
|
|
|
|
* Fallback method: Change the extension to ".$$$". If that matches the
|
|
|
|
* original name, then change the extension to ".~~~".
|
|
|
|
*
|
|
|
|
* If filename is more than 1000 characters long, we die a horrible
|
|
|
|
* death. Sorry.
|
|
|
|
*
|
|
|
|
* The filename restriction is a cheat so that we can use buf[] to store
|
|
|
|
* assorted temporary goo.
|
|
|
|
*
|
|
|
|
* Examples, assuming style 0 failed.
|
|
|
|
*
|
|
|
|
* suffix = ".bak" (style 1)
|
|
|
|
* foo.bar => foo.bak
|
|
|
|
* foo.bak => foo.$$$ (fallback)
|
|
|
|
* foo.$$$ => foo.~~~ (fallback)
|
|
|
|
* makefile => makefile.bak
|
|
|
|
*
|
|
|
|
* suffix = "~" (style 2)
|
|
|
|
* foo.c => foo.c~
|
|
|
|
* foo.c~ => foo.c~~
|
|
|
|
* foo.c~~ => foo~.c~~
|
|
|
|
* foo~.c~~ => foo~~.c~~
|
|
|
|
* foo~~~~~.c~~ => foo~~~~~.$$$ (fallback)
|
|
|
|
*
|
|
|
|
* foo.pas => foo~.pas
|
|
|
|
* makefile => makefile.~
|
|
|
|
* longname.fil => longname.fi~
|
|
|
|
* longname.fi~ => longnam~.fi~
|
|
|
|
* longnam~.fi~ => longnam~.$$$
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
2005-10-22 09:26:44 +04:00
|
|
|
static int valid_filename(const char *s);
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2005-10-22 09:26:44 +04:00
|
|
|
static const char suffix1[] = ".$$$";
|
|
|
|
static const char suffix2[] = ".~~~";
|
1998-01-16 15:13:05 +03:00
|
|
|
|
|
|
|
#define ext (&buf[1000])
|
|
|
|
|
|
|
|
#define strEQ(s1,s2) (strcmp(s1,s2) == 0)
|
|
|
|
|
|
|
|
void
|
2005-10-22 09:26:44 +04:00
|
|
|
ruby_add_suffix(VALUE str, const char *suffix)
|
1998-01-16 15:13:05 +03:00
|
|
|
{
|
|
|
|
int baselen;
|
|
|
|
int extlen = strlen(suffix);
|
|
|
|
char *s, *t, *p;
|
2002-08-21 19:47:54 +04:00
|
|
|
long slen;
|
1998-01-16 15:13:05 +03:00
|
|
|
char buf[1024];
|
|
|
|
|
2006-08-31 15:24:44 +04:00
|
|
|
if (RSTRING_LEN(str) > 1000)
|
2002-05-28 22:11:07 +04:00
|
|
|
rb_fatal("Cannot do inplace edit on long filename (%ld characters)",
|
2006-08-31 15:24:44 +04:00
|
|
|
RSTRING_LEN(str));
|
1998-01-16 15:13:05 +03:00
|
|
|
|
* configure.in, defines.h, dir.c, dir.h, dln.c, error.c,
eval.c, file.c, hash.c, io.c, main.c, missing.c,
process.c, ruby.c, rubysig.h, signal.c, st.c, util.c, util.h,
bcc/Makefile.sub, win32/Makefile.sub, win32/win32.h,
ext/Win32API/Win32API.c, ext/socket/getaddrinfo.c,
ext/socket/getnameinfo.c, ext/socket/socket.c,
ext/tcltklib/stubs.c
: replace "NT" with "_WIN32", add DOSISH_DRIVE_LETTER
* wince/exe.mak : delete \r at the end of lines.
* wince/mswince-ruby17.def : delete rb_obj_become
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2002-12-15 06:18:08 +03:00
|
|
|
#if defined(DJGPP) || defined(__CYGWIN32__) || defined(_WIN32)
|
1998-01-16 15:13:05 +03:00
|
|
|
/* Style 0 */
|
2006-08-31 15:24:44 +04:00
|
|
|
slen = RSTRING_LEN(str);
|
1999-01-20 07:59:39 +03:00
|
|
|
rb_str_cat(str, suffix, extlen);
|
1998-01-16 15:13:05 +03:00
|
|
|
#if defined(DJGPP)
|
|
|
|
if (_USE_LFN) return;
|
|
|
|
#else
|
2006-08-31 15:24:44 +04:00
|
|
|
if (valid_filename(RSTRING_PTR(str))) return;
|
1998-01-16 15:13:05 +03:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Fooey, style 0 failed. Fix str before continuing. */
|
2006-08-31 15:24:44 +04:00
|
|
|
rb_str_resize(str, slen);
|
1998-01-16 15:13:05 +03:00
|
|
|
#endif
|
|
|
|
|
|
|
|
slen = extlen;
|
2006-08-31 15:24:44 +04:00
|
|
|
t = buf; baselen = 0; s = RSTRING_PTR(str);
|
1999-08-13 09:45:20 +04:00
|
|
|
while ((*t = *s) && *s != '.') {
|
1998-01-16 15:13:05 +03:00
|
|
|
baselen++;
|
|
|
|
if (*s == '\\' || *s == '/') baselen = 0;
|
|
|
|
s++; t++;
|
|
|
|
}
|
|
|
|
p = t;
|
|
|
|
|
|
|
|
t = ext; extlen = 0;
|
2007-08-27 10:33:12 +04:00
|
|
|
while ((*t++ = *s++) != 0) extlen++;
|
1998-01-16 15:13:05 +03:00
|
|
|
if (extlen == 0) { ext[0] = '.'; ext[1] = 0; extlen++; }
|
|
|
|
|
|
|
|
if (*suffix == '.') { /* Style 1 */
|
|
|
|
if (strEQ(ext, suffix)) goto fallback;
|
|
|
|
strcpy(p, suffix);
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else if (suffix[1] == '\0') { /* Style 2 */
|
1998-01-16 15:13:05 +03:00
|
|
|
if (extlen < 4) {
|
|
|
|
ext[extlen] = *suffix;
|
|
|
|
ext[++extlen] = '\0';
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else if (baselen < 8) {
|
1998-01-16 15:13:05 +03:00
|
|
|
*p++ = *suffix;
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else if (ext[3] != *suffix) {
|
1998-01-16 15:13:05 +03:00
|
|
|
ext[3] = *suffix;
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else if (buf[7] != *suffix) {
|
1998-01-16 15:13:05 +03:00
|
|
|
buf[7] = *suffix;
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else goto fallback;
|
1998-01-16 15:13:05 +03:00
|
|
|
strcpy(p, ext);
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else { /* Style 3: Panic */
|
1998-01-16 15:13:05 +03:00
|
|
|
fallback:
|
|
|
|
(void)memcpy(p, strEQ(ext, suffix1) ? suffix2 : suffix1, 5);
|
|
|
|
}
|
1999-01-20 07:59:39 +03:00
|
|
|
rb_str_resize(str, strlen(buf));
|
2006-08-31 15:24:44 +04:00
|
|
|
memcpy(RSTRING_PTR(str), buf, RSTRING_LEN(str));
|
1998-01-16 15:13:05 +03:00
|
|
|
}
|
|
|
|
|
* configure.in, defines.h, dir.c, dir.h, dln.c, error.c,
eval.c, file.c, hash.c, io.c, main.c, missing.c,
process.c, ruby.c, rubysig.h, signal.c, st.c, util.c, util.h,
bcc/Makefile.sub, win32/Makefile.sub, win32/win32.h,
ext/Win32API/Win32API.c, ext/socket/getaddrinfo.c,
ext/socket/getnameinfo.c, ext/socket/socket.c,
ext/tcltklib/stubs.c
: replace "NT" with "_WIN32", add DOSISH_DRIVE_LETTER
* wince/exe.mak : delete \r at the end of lines.
* wince/mswince-ruby17.def : delete rb_obj_become
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2002-12-15 06:18:08 +03:00
|
|
|
#if defined(__CYGWIN32__) || defined(_WIN32)
|
1998-01-16 15:13:05 +03:00
|
|
|
static int
|
2005-10-22 09:26:44 +04:00
|
|
|
valid_filename(const char *s)
|
1998-01-16 15:13:05 +03:00
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
/*
|
|
|
|
// if the file exists, then it's a valid filename!
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (_access(s, 0) == 0) {
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
// It doesn't exist, so see if we can open it.
|
|
|
|
*/
|
2003-04-17 20:49:23 +04:00
|
|
|
|
1998-01-16 15:13:05 +03:00
|
|
|
if ((fd = _open(s, O_CREAT, 0666)) >= 0) {
|
|
|
|
_close(fd);
|
2003-04-17 20:49:23 +04:00
|
|
|
_unlink(s); /* don't leave it laying around */
|
1998-01-16 15:13:05 +03:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
#if defined __DJGPP__
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
#include <dpmi.h>
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
static char dbcs_table[256];
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
int
|
|
|
|
make_dbcs_table()
|
1998-01-16 15:13:05 +03:00
|
|
|
{
|
|
|
|
__dpmi_regs r;
|
2000-12-18 17:22:37 +03:00
|
|
|
struct {
|
|
|
|
unsigned char start;
|
|
|
|
unsigned char end;
|
|
|
|
} vec;
|
|
|
|
int offset;
|
|
|
|
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
|
|
r.x.ax = 0x6300;
|
1998-01-16 15:13:05 +03:00
|
|
|
__dpmi_int(0x21, &r);
|
2000-12-18 17:22:37 +03:00
|
|
|
offset = r.x.ds * 16 + r.x.si;
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
int i;
|
|
|
|
dosmemget(offset, sizeof vec, &vec);
|
|
|
|
if (!vec.start && !vec.end)
|
|
|
|
break;
|
|
|
|
for (i = vec.start; i <= vec.end; i++)
|
|
|
|
dbcs_table[i] = 1;
|
|
|
|
offset += 2;
|
1998-01-16 15:13:05 +03:00
|
|
|
}
|
2000-12-18 17:22:37 +03:00
|
|
|
}
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
int
|
|
|
|
mblen(const char *s, size_t n)
|
|
|
|
{
|
|
|
|
static int need_init = 1;
|
|
|
|
if (need_init) {
|
|
|
|
make_dbcs_table();
|
|
|
|
need_init = 0;
|
1998-01-16 15:13:05 +03:00
|
|
|
}
|
2000-12-18 17:22:37 +03:00
|
|
|
if (s) {
|
|
|
|
if (n == 0 || *s == 0)
|
|
|
|
return 0;
|
2004-01-29 17:56:26 +03:00
|
|
|
else if (!s[1])
|
|
|
|
return 1;
|
2000-12-18 17:22:37 +03:00
|
|
|
return dbcs_table[(unsigned char)*s] + 1;
|
1998-01-16 15:13:05 +03:00
|
|
|
}
|
2000-12-18 17:22:37 +03:00
|
|
|
else
|
|
|
|
return 1;
|
|
|
|
}
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
struct PathList {
|
|
|
|
struct PathList *next;
|
|
|
|
char *path;
|
|
|
|
};
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
struct PathInfo {
|
|
|
|
struct PathList *head;
|
|
|
|
int count;
|
|
|
|
};
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2007-03-04 08:51:07 +03:00
|
|
|
static int
|
2002-03-23 19:07:55 +03:00
|
|
|
push_element(const char *path, VALUE vinfo)
|
2000-12-18 17:22:37 +03:00
|
|
|
{
|
|
|
|
struct PathList *p;
|
2002-03-23 19:07:55 +03:00
|
|
|
struct PathInfo *info = (struct PathInfo *)vinfo;
|
2000-12-18 17:22:37 +03:00
|
|
|
|
|
|
|
p = ALLOC(struct PathList);
|
|
|
|
MEMZERO(p, struct PathList, 1);
|
|
|
|
p->path = ruby_strdup(path);
|
|
|
|
p->next = info->head;
|
|
|
|
info->head = p;
|
|
|
|
info->count++;
|
2007-03-04 08:51:07 +03:00
|
|
|
|
|
|
|
return 0;
|
2000-12-18 17:22:37 +03:00
|
|
|
}
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
#include <dirent.h>
|
|
|
|
int __opendir_flags = __OPENDIR_PRESERVE_CASE;
|
1998-01-16 15:13:05 +03:00
|
|
|
|
2000-12-18 17:22:37 +03:00
|
|
|
char **
|
|
|
|
__crt0_glob_function(char *path)
|
|
|
|
{
|
|
|
|
int len = strlen(path);
|
|
|
|
int i;
|
|
|
|
char **rv;
|
|
|
|
char path_buffer[PATH_MAX];
|
|
|
|
char *buf = path_buffer;
|
|
|
|
char *p;
|
|
|
|
struct PathInfo info;
|
|
|
|
struct PathList *plist;
|
|
|
|
|
|
|
|
if (PATH_MAX <= len)
|
|
|
|
buf = ruby_xmalloc(len + 1);
|
|
|
|
|
|
|
|
strncpy(buf, path, len);
|
|
|
|
buf[len] = '\0';
|
|
|
|
|
2004-01-21 18:26:11 +03:00
|
|
|
for (p = buf; *p; p += mblen(p, RUBY_MBCHAR_MAXSIZE))
|
2000-12-18 17:22:37 +03:00
|
|
|
if (*p == '\\')
|
|
|
|
*p = '/';
|
|
|
|
|
|
|
|
info.count = 0;
|
|
|
|
info.head = 0;
|
|
|
|
|
2007-02-27 16:27:14 +03:00
|
|
|
ruby_glob(buf, 0, push_element, (VALUE)&info);
|
2000-12-18 17:22:37 +03:00
|
|
|
|
|
|
|
if (buf != path_buffer)
|
|
|
|
ruby_xfree(buf);
|
|
|
|
|
|
|
|
if (info.count == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
rv = ruby_xmalloc((info.count + 1) * sizeof (char *));
|
|
|
|
|
|
|
|
plist = info.head;
|
|
|
|
i = 0;
|
|
|
|
while (plist) {
|
|
|
|
struct PathList *cur;
|
|
|
|
rv[i] = plist->path;
|
|
|
|
cur = plist;
|
|
|
|
plist = plist->next;
|
|
|
|
ruby_xfree(cur);
|
|
|
|
i++;
|
1998-01-16 15:13:05 +03:00
|
|
|
}
|
2000-12-18 17:22:37 +03:00
|
|
|
rv[i] = 0;
|
|
|
|
return rv;
|
1998-01-16 15:13:05 +03:00
|
|
|
}
|
2000-12-18 17:22:37 +03:00
|
|
|
|
1998-01-16 15:13:05 +03:00
|
|
|
#endif
|
1999-01-20 07:59:39 +03:00
|
|
|
|
|
|
|
/* mm.c */
|
|
|
|
|
|
|
|
#define A ((int*)a)
|
|
|
|
#define B ((int*)b)
|
|
|
|
#define C ((int*)c)
|
|
|
|
#define D ((int*)d)
|
|
|
|
|
2001-12-10 10:18:16 +03:00
|
|
|
#define mmprepare(base, size) do {\
|
|
|
|
if (((long)base & (0x3)) == 0)\
|
|
|
|
if (size >= 16) mmkind = 1;\
|
|
|
|
else mmkind = 0;\
|
|
|
|
else mmkind = -1;\
|
|
|
|
high = (size & (~0xf));\
|
|
|
|
low = (size & 0x0c);\
|
|
|
|
} while (0)\
|
1999-01-20 07:59:39 +03:00
|
|
|
|
2001-12-10 10:18:16 +03:00
|
|
|
#define mmarg mmkind, size, high, low
|
1999-01-20 07:59:39 +03:00
|
|
|
|
2007-03-19 06:58:57 +03:00
|
|
|
static void mmswap_(register char *a, register char *b, int mmkind, int size, int high, int low)
|
1999-01-20 07:59:39 +03:00
|
|
|
{
|
|
|
|
register int s;
|
|
|
|
if (a == b) return;
|
|
|
|
if (mmkind >= 0) {
|
|
|
|
if (mmkind > 0) {
|
|
|
|
register char *t = a + high;
|
|
|
|
do {
|
|
|
|
s = A[0]; A[0] = B[0]; B[0] = s;
|
|
|
|
s = A[1]; A[1] = B[1]; B[1] = s;
|
|
|
|
s = A[2]; A[2] = B[2]; B[2] = s;
|
|
|
|
s = A[3]; A[3] = B[3]; B[3] = s; a += 16; b += 16;
|
1999-08-13 09:45:20 +04:00
|
|
|
} while (a < t);
|
1999-01-20 07:59:39 +03:00
|
|
|
}
|
|
|
|
if (low != 0) { s = A[0]; A[0] = B[0]; B[0] = s;
|
|
|
|
if (low >= 8) { s = A[1]; A[1] = B[1]; B[1] = s;
|
|
|
|
if (low == 12) {s = A[2]; A[2] = B[2]; B[2] = s;}}}
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else {
|
2001-12-10 10:18:16 +03:00
|
|
|
register char *t = a + size;
|
1999-01-20 07:59:39 +03:00
|
|
|
do {s = *a; *a++ = *b; *b++ = s;} while (a < t);
|
|
|
|
}
|
|
|
|
}
|
2001-12-10 10:18:16 +03:00
|
|
|
#define mmswap(a,b) mmswap_((a),(b),mmarg)
|
1999-01-20 07:59:39 +03:00
|
|
|
|
2007-03-19 06:58:57 +03:00
|
|
|
static void mmrot3_(register char *a, register char *b, register char *c, int mmkind, int size, int high, int low)
|
1999-01-20 07:59:39 +03:00
|
|
|
{
|
|
|
|
register int s;
|
|
|
|
if (mmkind >= 0) {
|
|
|
|
if (mmkind > 0) {
|
|
|
|
register char *t = a + high;
|
|
|
|
do {
|
|
|
|
s = A[0]; A[0] = B[0]; B[0] = C[0]; C[0] = s;
|
|
|
|
s = A[1]; A[1] = B[1]; B[1] = C[1]; C[1] = s;
|
|
|
|
s = A[2]; A[2] = B[2]; B[2] = C[2]; C[2] = s;
|
|
|
|
s = A[3]; A[3] = B[3]; B[3] = C[3]; C[3] = s; a += 16; b += 16; c += 16;
|
2001-05-02 08:22:21 +04:00
|
|
|
} while (a < t);
|
1999-01-20 07:59:39 +03:00
|
|
|
}
|
|
|
|
if (low != 0) { s = A[0]; A[0] = B[0]; B[0] = C[0]; C[0] = s;
|
|
|
|
if (low >= 8) { s = A[1]; A[1] = B[1]; B[1] = C[1]; C[1] = s;
|
|
|
|
if (low == 12) {s = A[2]; A[2] = B[2]; B[2] = C[2]; C[2] = s;}}}
|
2001-05-02 08:22:21 +04:00
|
|
|
}
|
|
|
|
else {
|
2001-12-10 10:18:16 +03:00
|
|
|
register char *t = a + size;
|
1999-01-20 07:59:39 +03:00
|
|
|
do {s = *a; *a++ = *b; *b++ = *c; *c++ = s;} while (a < t);
|
|
|
|
}
|
|
|
|
}
|
2001-12-10 10:18:16 +03:00
|
|
|
#define mmrot3(a,b,c) mmrot3_((a),(b),(c),mmarg)
|
1999-01-20 07:59:39 +03:00
|
|
|
|
|
|
|
/* qs6.c */
|
|
|
|
/*****************************************************/
|
|
|
|
/* */
|
|
|
|
/* qs6 (Quick sort function) */
|
|
|
|
/* */
|
|
|
|
/* by Tomoyuki Kawamura 1995.4.21 */
|
|
|
|
/* kawamura@tokuyama.ac.jp */
|
|
|
|
/*****************************************************/
|
|
|
|
|
|
|
|
typedef struct { char *LL, *RR; } stack_node; /* Stack structure for L,l,R,r */
|
2002-04-18 12:46:18 +04:00
|
|
|
#define PUSH(ll,rr) do { top->LL = (ll); top->RR = (rr); ++top; } while (0) /* Push L,l,R,r */
|
|
|
|
#define POP(ll,rr) do { --top; ll = top->LL; rr = top->RR; } while (0) /* Pop L,l,R,r */
|
1999-01-20 07:59:39 +03:00
|
|
|
|
2004-09-21 07:08:33 +04:00
|
|
|
#define med3(a,b,c) ((*cmp)(a,b,d)<0 ? \
|
|
|
|
((*cmp)(b,c,d)<0 ? b : ((*cmp)(a,c,d)<0 ? c : a)) : \
|
|
|
|
((*cmp)(b,c,d)>0 ? b : ((*cmp)(a,c,d)<0 ? a : c)))
|
1999-01-20 07:59:39 +03:00
|
|
|
|
2005-10-11 16:30:48 +04:00
|
|
|
void
|
|
|
|
ruby_qsort(void* base, const int nel, const int size,
|
|
|
|
int (*cmp)(const void*, const void*, void*), void *d)
|
1999-01-20 07:59:39 +03:00
|
|
|
{
|
2001-05-02 08:22:21 +04:00
|
|
|
register char *l, *r, *m; /* l,r:left,right group m:median point */
|
|
|
|
register int t, eq_l, eq_r; /* eq_l: all items in left group are equal to S */
|
|
|
|
char *L = base; /* left end of curren region */
|
2001-12-10 10:18:16 +03:00
|
|
|
char *R = (char*)base + size*(nel-1); /* right end of current region */
|
|
|
|
int chklim = 63; /* threshold of ordering element check */
|
|
|
|
stack_node stack[32], *top = stack; /* 32 is enough for 32bit CPU */
|
|
|
|
int mmkind, high, low;
|
2001-05-02 08:22:21 +04:00
|
|
|
|
|
|
|
if (nel <= 1) return; /* need not to sort */
|
|
|
|
mmprepare(base, size);
|
|
|
|
goto start;
|
|
|
|
|
|
|
|
nxt:
|
|
|
|
if (stack == top) return; /* return if stack is empty */
|
|
|
|
POP(L,R);
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
start:
|
2001-12-10 10:18:16 +03:00
|
|
|
if (L + size == R) { /* 2 elements */
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((*cmp)(L,R,d) > 0) mmswap(L,R); goto nxt;
|
2001-12-10 10:18:16 +03:00
|
|
|
}
|
2001-05-02 08:22:21 +04:00
|
|
|
|
|
|
|
l = L; r = R;
|
|
|
|
t = (r - l + size) / size; /* number of elements */
|
|
|
|
m = l + size * (t >> 1); /* calculate median value */
|
|
|
|
|
|
|
|
if (t >= 60) {
|
|
|
|
register char *m1;
|
|
|
|
register char *m3;
|
|
|
|
if (t >= 200) {
|
|
|
|
t = size*(t>>3); /* number of bytes in splitting 8 */
|
|
|
|
{
|
|
|
|
register char *p1 = l + t;
|
|
|
|
register char *p2 = p1 + t;
|
|
|
|
register char *p3 = p2 + t;
|
|
|
|
m1 = med3(p1, p2, p3);
|
|
|
|
p1 = m + t;
|
|
|
|
p2 = p1 + t;
|
|
|
|
p3 = p2 + t;
|
|
|
|
m3 = med3(p1, p2, p3);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
t = size*(t>>2); /* number of bytes in splitting 4 */
|
|
|
|
m1 = l + t;
|
|
|
|
m3 = m + t;
|
|
|
|
}
|
|
|
|
m = med3(m1, m, m3);
|
|
|
|
}
|
|
|
|
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(l,m,d)) < 0) { /*3-5-?*/
|
|
|
|
if ((t = (*cmp)(m,r,d)) < 0) { /*3-5-7*/
|
2001-05-02 08:22:21 +04:00
|
|
|
if (chklim && nel >= chklim) { /* check if already ascending order */
|
|
|
|
char *p;
|
|
|
|
chklim = 0;
|
2004-09-21 07:08:33 +04:00
|
|
|
for (p=l; p<r; p+=size) if ((*cmp)(p,p+size,d) > 0) goto fail;
|
2001-05-02 08:22:21 +04:00
|
|
|
goto nxt;
|
|
|
|
}
|
|
|
|
fail: goto loopA; /*3-5-7*/
|
|
|
|
}
|
|
|
|
if (t > 0) {
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((*cmp)(l,r,d) <= 0) {mmswap(m,r); goto loopA;} /*3-5-4*/
|
2001-05-02 08:22:21 +04:00
|
|
|
mmrot3(r,m,l); goto loopA; /*3-5-2*/
|
|
|
|
}
|
|
|
|
goto loopB; /*3-5-5*/
|
|
|
|
}
|
|
|
|
|
|
|
|
if (t > 0) { /*7-5-?*/
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(m,r,d)) > 0) { /*7-5-3*/
|
2001-05-02 08:22:21 +04:00
|
|
|
if (chklim && nel >= chklim) { /* check if already ascending order */
|
|
|
|
char *p;
|
|
|
|
chklim = 0;
|
2004-09-21 07:08:33 +04:00
|
|
|
for (p=l; p<r; p+=size) if ((*cmp)(p,p+size,d) < 0) goto fail2;
|
2001-05-02 08:22:21 +04:00
|
|
|
while (l<r) {mmswap(l,r); l+=size; r-=size;} /* reverse region */
|
|
|
|
goto nxt;
|
|
|
|
}
|
|
|
|
fail2: mmswap(l,r); goto loopA; /*7-5-3*/
|
|
|
|
}
|
|
|
|
if (t < 0) {
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((*cmp)(l,r,d) <= 0) {mmswap(l,m); goto loopB;} /*7-5-8*/
|
2001-05-02 08:22:21 +04:00
|
|
|
mmrot3(l,m,r); goto loopA; /*7-5-6*/
|
|
|
|
}
|
|
|
|
mmswap(l,r); goto loopA; /*7-5-5*/
|
|
|
|
}
|
|
|
|
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(m,r,d)) < 0) {goto loopA;} /*5-5-7*/
|
2001-05-02 08:22:21 +04:00
|
|
|
if (t > 0) {mmswap(l,r); goto loopB;} /*5-5-3*/
|
|
|
|
|
2001-12-10 10:18:16 +03:00
|
|
|
/* determining splitting type in case 5-5-5 */ /*5-5-5*/
|
2001-05-02 08:22:21 +04:00
|
|
|
for (;;) {
|
|
|
|
if ((l += size) == r) goto nxt; /*5-5-5*/
|
|
|
|
if (l == m) continue;
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(l,m,d)) > 0) {mmswap(l,r); l = L; goto loopA;}/*575-5*/
|
2001-05-02 08:22:21 +04:00
|
|
|
if (t < 0) {mmswap(L,l); l = L; goto loopB;} /*535-5*/
|
|
|
|
}
|
|
|
|
|
|
|
|
loopA: eq_l = 1; eq_r = 1; /* splitting type A */ /* left <= median < right */
|
|
|
|
for (;;) {
|
|
|
|
for (;;) {
|
|
|
|
if ((l += size) == r)
|
|
|
|
{l -= size; if (l != m) mmswap(m,l); l -= size; goto fin;}
|
|
|
|
if (l == m) continue;
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(l,m,d)) > 0) {eq_r = 0; break;}
|
2001-05-02 08:22:21 +04:00
|
|
|
if (t < 0) eq_l = 0;
|
|
|
|
}
|
|
|
|
for (;;) {
|
|
|
|
if (l == (r -= size))
|
|
|
|
{l -= size; if (l != m) mmswap(m,l); l -= size; goto fin;}
|
|
|
|
if (r == m) {m = l; break;}
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(r,m,d)) < 0) {eq_l = 0; break;}
|
2001-05-02 08:22:21 +04:00
|
|
|
if (t == 0) break;
|
|
|
|
}
|
|
|
|
mmswap(l,r); /* swap left and right */
|
|
|
|
}
|
|
|
|
|
|
|
|
loopB: eq_l = 1; eq_r = 1; /* splitting type B */ /* left < median <= right */
|
|
|
|
for (;;) {
|
|
|
|
for (;;) {
|
|
|
|
if (l == (r -= size))
|
|
|
|
{r += size; if (r != m) mmswap(r,m); r += size; goto fin;}
|
|
|
|
if (r == m) continue;
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(r,m,d)) < 0) {eq_l = 0; break;}
|
2001-05-02 08:22:21 +04:00
|
|
|
if (t > 0) eq_r = 0;
|
|
|
|
}
|
|
|
|
for (;;) {
|
|
|
|
if ((l += size) == r)
|
|
|
|
{r += size; if (r != m) mmswap(r,m); r += size; goto fin;}
|
|
|
|
if (l == m) {m = r; break;}
|
2004-09-21 07:08:33 +04:00
|
|
|
if ((t = (*cmp)(l,m,d)) > 0) {eq_r = 0; break;}
|
2001-05-02 08:22:21 +04:00
|
|
|
if (t == 0) break;
|
|
|
|
}
|
|
|
|
mmswap(l,r); /* swap left and right */
|
|
|
|
}
|
|
|
|
|
|
|
|
fin:
|
|
|
|
if (eq_l == 0) /* need to sort left side */
|
|
|
|
if (eq_r == 0) /* need to sort right side */
|
|
|
|
if (l-L < R-r) {PUSH(r,R); R = l;} /* sort left side first */
|
|
|
|
else {PUSH(L,l); L = r;} /* sort right side first */
|
|
|
|
else R = l; /* need to sort left side only */
|
|
|
|
else if (eq_r == 0) L = r; /* need to sort right side only */
|
|
|
|
else goto nxt; /* need not to sort both sides */
|
|
|
|
}
|
1999-01-20 07:59:39 +03:00
|
|
|
}
|
1999-08-13 09:45:20 +04:00
|
|
|
|
2000-07-27 13:49:34 +04:00
|
|
|
char *
|
2005-10-22 09:26:44 +04:00
|
|
|
ruby_strdup(const char *str)
|
2000-07-27 13:49:34 +04:00
|
|
|
{
|
|
|
|
char *tmp;
|
|
|
|
int len = strlen(str) + 1;
|
|
|
|
|
|
|
|
tmp = xmalloc(len);
|
|
|
|
memcpy(tmp, str, len);
|
|
|
|
|
|
|
|
return tmp;
|
|
|
|
}
|
2001-11-08 09:43:14 +03:00
|
|
|
|
|
|
|
char *
|
2005-10-22 09:26:44 +04:00
|
|
|
ruby_getcwd(void)
|
2001-11-08 09:43:14 +03:00
|
|
|
{
|
* gc.c (Init_stack): stack region is far smaller than usual if
pthread is used.
* marshal.c (w_extended): singleton methods should not be checked
when dumping via marshal_dump() or _dump(). [ruby-talk:85909]
* file.c (getcwdofdrv): avoid using getcwd() directly, use
my_getcwd() instead.
* merged NeXT, OpenStep, Rhapsody ports patch from Eric Sunshine
<sunshine@sunshineco.com>. [ruby-core:01596]
* marshal.c (w_object): LINK check earlier than anything else,
i.e. do not dump TYPE_IVAR for already dumped objects.
(ruby-bugs PR#1220)
* eval.c (rb_eval): call "inherited" only when a new class is
generated; not on reopening.
* eval.c (eval): prepend error position in evaluating string to
* configure.in: revived NextStep, OpenStep, and Rhapsody ports which
had become unbuildable; enhanced --enable-fat-binary option so that
it accepts a list of desired architectures (rather than assuming a
fixed list), or defaults to a platform-appropriate list if user does
not provide an explicit list; made the default list of architectures
for MAB (fat binary) more comprehensive; now uses -fno-common even
when building the interpreter (in addition to using it for
extensions), thus allowing the interpreter to be embedded into a
plugin module of an external project (in addition to allowing
embedding directly into an application); added checks for
<netinet/in_systm.h> (needed by `socket' extension) and getcwd(); now
ensures that -I/usr/local/include is employed when extensions'
extconf.rb scripts invoke have_header() since extension checks on
NextStep and OpenStep will fail without it if the desired resource
resides in the /usr/local tree; fixed formatting of --help message.
* Makefile.in: $(LIBRUBY_A) rule now deletes the archive before
invoking $(AR) since `ar' on Apple/NeXT can not "update" MAB archives
(see configure's --enable-fat-binary option); added rule for new
missing/getcwd.c.
* defines.h: fixed endian handling during MAB build (see configure's
--enable-fat-binary option) to ensure that all portions of the
project see the correct WORDS_BIGENDIAN value (some extension modules
were getting the wrong endian setting); added missing constants
GETPGRP_VOID, WNOHANG, WUNTRACED, X_OK, and type pid_t for NextStep
and OpenStep; removed unnecessary and problematic HAVE_SYS_WAIT_H
define in NeXT section.
* dir.c: do not allow NAMLEN() macro to trust dirent::d_namlen on
NextStep since, on some installations, this value always resolves
uselessly to zero.
* dln.c: added error reporting to NextStep extension loader since the
previous behavior of failing silently was not useful; now ensures
that NSLINKMODULE_OPTION_BINDNOW compatibility constant is defined
for OpenStep and Rhapsody; no longer includes <mach-o/dyld.h> twice
on Rhapsody since this header lacks multiple-include protection,
which resulted in "redefinition" compilation errors.
* main.c: also create hard reference to objc_msgSend() on NeXT
platforms (in addition to Apple platforms).
* lib/mkmf.rb: now exports XCFLAGS from configure script to extension
makefiles so that extensions can be built MAB (see configure's
--enable-fat-binary option); also utilize XCFLAGS in cc_command()
(but not cpp_command() because MAB flags are incompatible with
direct invocation of `cpp').
* ext/curses/extconf.rb: now additionally checks for presence of these
curses functions which are not present on NextStep or Openstep:
bkgd(), bkgdset(), color(), curs(), getbkgd(), init(), scrl(), set(),
setscrreg(), wattroff(), wattron(), wattrset(), wbkgd(), wbkgdset(),
wscrl(), wsetscrreg()
* ext/curses/curses.c: added appropriate #ifdef's for additional set of
curses functions now checked by extconf.rb; fixed curses_bkgd() and
window_bkgd() to correctly return boolean result rather than numeric
result; fixed window_getbkgd() to correctly signal an error by
returning nil rather than -1.
* ext/etc/etc.c: setup_passwd() and setup_group() now check for null
pointers before invoking rb_tainted_str_new2() upon fields extracted
from `struct passwd' and `struct group' since null pointers in some
fields are common on NextStep/OpenStep (especially so for the
`pw_comment' field) and rb_tainted_str_new2() throws an exception
when it receives a null pointer.
* ext/pty/pty.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup().
* ext/socket/getaddrinfo.c: cast first argument of getservbyname(),
gethostbyaddr(), and gethostbyname() from (const char*) to non-const
(char*) for older platforms such as NextStep and OpenStep.
* ext/socket/socket.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup(); include
<netinet/in_systm.h> if present for NextStep and OpenStep; cast first
argument of gethostbyaddr() and getservbyname() from (const char*) to
non-const (char*) for older platforms.
* ext/syslog/syslog.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2003-11-22 07:00:03 +03:00
|
|
|
#ifdef HAVE_GETCWD
|
2001-11-08 09:43:14 +03:00
|
|
|
int size = 200;
|
|
|
|
char *buf = xmalloc(size);
|
|
|
|
|
|
|
|
while (!getcwd(buf, size)) {
|
2004-09-12 18:55:22 +04:00
|
|
|
if (errno != ERANGE) {
|
|
|
|
free(buf);
|
|
|
|
rb_sys_fail("getcwd");
|
|
|
|
}
|
2001-11-08 09:43:14 +03:00
|
|
|
size *= 2;
|
|
|
|
buf = xrealloc(buf, size);
|
|
|
|
}
|
* gc.c (Init_stack): stack region is far smaller than usual if
pthread is used.
* marshal.c (w_extended): singleton methods should not be checked
when dumping via marshal_dump() or _dump(). [ruby-talk:85909]
* file.c (getcwdofdrv): avoid using getcwd() directly, use
my_getcwd() instead.
* merged NeXT, OpenStep, Rhapsody ports patch from Eric Sunshine
<sunshine@sunshineco.com>. [ruby-core:01596]
* marshal.c (w_object): LINK check earlier than anything else,
i.e. do not dump TYPE_IVAR for already dumped objects.
(ruby-bugs PR#1220)
* eval.c (rb_eval): call "inherited" only when a new class is
generated; not on reopening.
* eval.c (eval): prepend error position in evaluating string to
* configure.in: revived NextStep, OpenStep, and Rhapsody ports which
had become unbuildable; enhanced --enable-fat-binary option so that
it accepts a list of desired architectures (rather than assuming a
fixed list), or defaults to a platform-appropriate list if user does
not provide an explicit list; made the default list of architectures
for MAB (fat binary) more comprehensive; now uses -fno-common even
when building the interpreter (in addition to using it for
extensions), thus allowing the interpreter to be embedded into a
plugin module of an external project (in addition to allowing
embedding directly into an application); added checks for
<netinet/in_systm.h> (needed by `socket' extension) and getcwd(); now
ensures that -I/usr/local/include is employed when extensions'
extconf.rb scripts invoke have_header() since extension checks on
NextStep and OpenStep will fail without it if the desired resource
resides in the /usr/local tree; fixed formatting of --help message.
* Makefile.in: $(LIBRUBY_A) rule now deletes the archive before
invoking $(AR) since `ar' on Apple/NeXT can not "update" MAB archives
(see configure's --enable-fat-binary option); added rule for new
missing/getcwd.c.
* defines.h: fixed endian handling during MAB build (see configure's
--enable-fat-binary option) to ensure that all portions of the
project see the correct WORDS_BIGENDIAN value (some extension modules
were getting the wrong endian setting); added missing constants
GETPGRP_VOID, WNOHANG, WUNTRACED, X_OK, and type pid_t for NextStep
and OpenStep; removed unnecessary and problematic HAVE_SYS_WAIT_H
define in NeXT section.
* dir.c: do not allow NAMLEN() macro to trust dirent::d_namlen on
NextStep since, on some installations, this value always resolves
uselessly to zero.
* dln.c: added error reporting to NextStep extension loader since the
previous behavior of failing silently was not useful; now ensures
that NSLINKMODULE_OPTION_BINDNOW compatibility constant is defined
for OpenStep and Rhapsody; no longer includes <mach-o/dyld.h> twice
on Rhapsody since this header lacks multiple-include protection,
which resulted in "redefinition" compilation errors.
* main.c: also create hard reference to objc_msgSend() on NeXT
platforms (in addition to Apple platforms).
* lib/mkmf.rb: now exports XCFLAGS from configure script to extension
makefiles so that extensions can be built MAB (see configure's
--enable-fat-binary option); also utilize XCFLAGS in cc_command()
(but not cpp_command() because MAB flags are incompatible with
direct invocation of `cpp').
* ext/curses/extconf.rb: now additionally checks for presence of these
curses functions which are not present on NextStep or Openstep:
bkgd(), bkgdset(), color(), curs(), getbkgd(), init(), scrl(), set(),
setscrreg(), wattroff(), wattron(), wattrset(), wbkgd(), wbkgdset(),
wscrl(), wsetscrreg()
* ext/curses/curses.c: added appropriate #ifdef's for additional set of
curses functions now checked by extconf.rb; fixed curses_bkgd() and
window_bkgd() to correctly return boolean result rather than numeric
result; fixed window_getbkgd() to correctly signal an error by
returning nil rather than -1.
* ext/etc/etc.c: setup_passwd() and setup_group() now check for null
pointers before invoking rb_tainted_str_new2() upon fields extracted
from `struct passwd' and `struct group' since null pointers in some
fields are common on NextStep/OpenStep (especially so for the
`pw_comment' field) and rb_tainted_str_new2() throws an exception
when it receives a null pointer.
* ext/pty/pty.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup().
* ext/socket/getaddrinfo.c: cast first argument of getservbyname(),
gethostbyaddr(), and gethostbyname() from (const char*) to non-const
(char*) for older platforms such as NextStep and OpenStep.
* ext/socket/socket.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup(); include
<netinet/in_systm.h> if present for NextStep and OpenStep; cast first
argument of gethostbyaddr() and getservbyname() from (const char*) to
non-const (char*) for older platforms.
* ext/syslog/syslog.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2003-11-22 07:00:03 +03:00
|
|
|
#else
|
|
|
|
# ifndef PATH_MAX
|
|
|
|
# define PATH_MAX 8192
|
|
|
|
# endif
|
|
|
|
char *buf = xmalloc(PATH_MAX+1);
|
|
|
|
|
|
|
|
if (!getwd(buf)) {
|
2004-09-12 18:55:22 +04:00
|
|
|
free(buf);
|
* gc.c (Init_stack): stack region is far smaller than usual if
pthread is used.
* marshal.c (w_extended): singleton methods should not be checked
when dumping via marshal_dump() or _dump(). [ruby-talk:85909]
* file.c (getcwdofdrv): avoid using getcwd() directly, use
my_getcwd() instead.
* merged NeXT, OpenStep, Rhapsody ports patch from Eric Sunshine
<sunshine@sunshineco.com>. [ruby-core:01596]
* marshal.c (w_object): LINK check earlier than anything else,
i.e. do not dump TYPE_IVAR for already dumped objects.
(ruby-bugs PR#1220)
* eval.c (rb_eval): call "inherited" only when a new class is
generated; not on reopening.
* eval.c (eval): prepend error position in evaluating string to
* configure.in: revived NextStep, OpenStep, and Rhapsody ports which
had become unbuildable; enhanced --enable-fat-binary option so that
it accepts a list of desired architectures (rather than assuming a
fixed list), or defaults to a platform-appropriate list if user does
not provide an explicit list; made the default list of architectures
for MAB (fat binary) more comprehensive; now uses -fno-common even
when building the interpreter (in addition to using it for
extensions), thus allowing the interpreter to be embedded into a
plugin module of an external project (in addition to allowing
embedding directly into an application); added checks for
<netinet/in_systm.h> (needed by `socket' extension) and getcwd(); now
ensures that -I/usr/local/include is employed when extensions'
extconf.rb scripts invoke have_header() since extension checks on
NextStep and OpenStep will fail without it if the desired resource
resides in the /usr/local tree; fixed formatting of --help message.
* Makefile.in: $(LIBRUBY_A) rule now deletes the archive before
invoking $(AR) since `ar' on Apple/NeXT can not "update" MAB archives
(see configure's --enable-fat-binary option); added rule for new
missing/getcwd.c.
* defines.h: fixed endian handling during MAB build (see configure's
--enable-fat-binary option) to ensure that all portions of the
project see the correct WORDS_BIGENDIAN value (some extension modules
were getting the wrong endian setting); added missing constants
GETPGRP_VOID, WNOHANG, WUNTRACED, X_OK, and type pid_t for NextStep
and OpenStep; removed unnecessary and problematic HAVE_SYS_WAIT_H
define in NeXT section.
* dir.c: do not allow NAMLEN() macro to trust dirent::d_namlen on
NextStep since, on some installations, this value always resolves
uselessly to zero.
* dln.c: added error reporting to NextStep extension loader since the
previous behavior of failing silently was not useful; now ensures
that NSLINKMODULE_OPTION_BINDNOW compatibility constant is defined
for OpenStep and Rhapsody; no longer includes <mach-o/dyld.h> twice
on Rhapsody since this header lacks multiple-include protection,
which resulted in "redefinition" compilation errors.
* main.c: also create hard reference to objc_msgSend() on NeXT
platforms (in addition to Apple platforms).
* lib/mkmf.rb: now exports XCFLAGS from configure script to extension
makefiles so that extensions can be built MAB (see configure's
--enable-fat-binary option); also utilize XCFLAGS in cc_command()
(but not cpp_command() because MAB flags are incompatible with
direct invocation of `cpp').
* ext/curses/extconf.rb: now additionally checks for presence of these
curses functions which are not present on NextStep or Openstep:
bkgd(), bkgdset(), color(), curs(), getbkgd(), init(), scrl(), set(),
setscrreg(), wattroff(), wattron(), wattrset(), wbkgd(), wbkgdset(),
wscrl(), wsetscrreg()
* ext/curses/curses.c: added appropriate #ifdef's for additional set of
curses functions now checked by extconf.rb; fixed curses_bkgd() and
window_bkgd() to correctly return boolean result rather than numeric
result; fixed window_getbkgd() to correctly signal an error by
returning nil rather than -1.
* ext/etc/etc.c: setup_passwd() and setup_group() now check for null
pointers before invoking rb_tainted_str_new2() upon fields extracted
from `struct passwd' and `struct group' since null pointers in some
fields are common on NextStep/OpenStep (especially so for the
`pw_comment' field) and rb_tainted_str_new2() throws an exception
when it receives a null pointer.
* ext/pty/pty.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup().
* ext/socket/getaddrinfo.c: cast first argument of getservbyname(),
gethostbyaddr(), and gethostbyname() from (const char*) to non-const
(char*) for older platforms such as NextStep and OpenStep.
* ext/socket/socket.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup(); include
<netinet/in_systm.h> if present for NextStep and OpenStep; cast first
argument of gethostbyaddr() and getservbyname() from (const char*) to
non-const (char*) for older platforms.
* ext/syslog/syslog.c: include "util.h" for strdup()/ruby_strdup() for
platforms such as NextStep and OpenStep which lack strdup().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2003-11-22 07:00:03 +03:00
|
|
|
rb_sys_fail("getwd");
|
|
|
|
}
|
|
|
|
#endif
|
2001-11-08 09:43:14 +03:00
|
|
|
return buf;
|
|
|
|
}
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
/****************************************************************
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* The author of this software is David M. Gay.
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
|
|
* purpose without fee is hereby granted, provided that this entire notice
|
|
|
|
* is included in all copies of any software which is or includes a copy
|
|
|
|
* or modification of this software and in all copies of the supporting
|
|
|
|
* documentation for such software.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
|
|
|
|
* WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR LUCENT MAKES ANY
|
|
|
|
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
|
|
|
|
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
|
|
|
|
*
|
|
|
|
***************************************************************/
|
|
|
|
|
|
|
|
/* Please send bug reports to David M. Gay (dmg at acm dot org,
|
|
|
|
* with " at " changed at "@" and " dot " changed to "."). */
|
|
|
|
|
|
|
|
/* On a machine with IEEE extended-precision registers, it is
|
|
|
|
* necessary to specify double-precision (53-bit) rounding precision
|
|
|
|
* before invoking strtod or dtoa. If the machine uses (the equivalent
|
|
|
|
* of) Intel 80x87 arithmetic, the call
|
|
|
|
* _control87(PC_53, MCW_PC);
|
|
|
|
* does this with many compilers. Whether this or another call is
|
|
|
|
* appropriate depends on the compiler; for this to work, it may be
|
|
|
|
* necessary to #include "float.h" or another system-dependent header
|
|
|
|
* file.
|
2002-05-14 10:22:31 +04:00
|
|
|
*/
|
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
/* strtod for IEEE-, VAX-, and IBM-arithmetic machines.
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* This strtod returns a nearest machine number to the input decimal
|
|
|
|
* string (or sets errno to ERANGE). With IEEE arithmetic, ties are
|
|
|
|
* broken by the IEEE round-even rule. Otherwise ties are broken by
|
|
|
|
* biased rounding (add half and chop).
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* Inspired loosely by William D. Clinger's paper "How to Read Floating
|
|
|
|
* Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 92-101].
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* Modifications:
|
2002-05-14 10:22:31 +04:00
|
|
|
*
|
2007-08-22 00:57:48 +04:00
|
|
|
* 1. We only require IEEE, IBM, or VAX double-precision
|
|
|
|
* arithmetic (not IEEE double-extended).
|
|
|
|
* 2. We get by with floating-point arithmetic in a case that
|
|
|
|
* Clinger missed -- when we're computing d * 10^n
|
|
|
|
* for a small integer d and the integer n is not too
|
|
|
|
* much larger than 22 (the maximum integer k for which
|
|
|
|
* we can represent 10^k exactly), we may be able to
|
|
|
|
* compute (d*10^k) * 10^(e-k) with just one roundoff.
|
|
|
|
* 3. Rather than a bit-at-a-time adjustment of the binary
|
|
|
|
* result in the hard case, we use floating-point
|
|
|
|
* arithmetic to determine the adjustment to within
|
|
|
|
* one bit; only in really hard cases do we need to
|
|
|
|
* compute a second residual.
|
|
|
|
* 4. Because of 3., we don't need a large table of powers of 10
|
|
|
|
* for ten-to-e (just some small tables, e.g. of 10^k
|
|
|
|
* for 0 <= k <= 22).
|
2002-05-14 10:22:31 +04:00
|
|
|
*/
|
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
/*
|
|
|
|
* #define IEEE_LITTLE_ENDIAN for IEEE-arithmetic machines where the least
|
|
|
|
* significant byte has the lowest address.
|
|
|
|
* #define IEEE_BIG_ENDIAN for IEEE-arithmetic machines where the most
|
|
|
|
* significant byte has the lowest address.
|
|
|
|
* #define Long int on machines with 32-bit ints and 64-bit longs.
|
|
|
|
* #define IBM for IBM mainframe-style floating-point arithmetic.
|
|
|
|
* #define VAX for VAX-style floating-point arithmetic (D_floating).
|
|
|
|
* #define No_leftright to omit left-right logic in fast floating-point
|
|
|
|
* computation of dtoa.
|
|
|
|
* #define Honor_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3
|
|
|
|
* and strtod and dtoa should round accordingly.
|
|
|
|
* #define Check_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3
|
|
|
|
* and Honor_FLT_ROUNDS is not #defined.
|
|
|
|
* #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines
|
|
|
|
* that use extended-precision instructions to compute rounded
|
|
|
|
* products and quotients) with IBM.
|
|
|
|
* #define ROUND_BIASED for IEEE-format with biased rounding.
|
|
|
|
* #define Inaccurate_Divide for IEEE-format with correctly rounded
|
|
|
|
* products but inaccurate quotients, e.g., for Intel i860.
|
|
|
|
* #define NO_LONG_LONG on machines that do not have a "long long"
|
|
|
|
* integer type (of >= 64 bits). On such machines, you can
|
|
|
|
* #define Just_16 to store 16 bits per 32-bit Long when doing
|
|
|
|
* high-precision integer arithmetic. Whether this speeds things
|
|
|
|
* up or slows things down depends on the machine and the number
|
|
|
|
* being converted. If long long is available and the name is
|
|
|
|
* something other than "long long", #define Llong to be the name,
|
|
|
|
* and if "unsigned Llong" does not work as an unsigned version of
|
|
|
|
* Llong, #define #ULLong to be the corresponding unsigned type.
|
|
|
|
* #define KR_headers for old-style C function headers.
|
|
|
|
* #define Bad_float_h if your system lacks a float.h or if it does not
|
|
|
|
* define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP,
|
|
|
|
* FLT_RADIX, FLT_ROUNDS, and DBL_MAX.
|
|
|
|
* #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n)
|
|
|
|
* if memory is available and otherwise does something you deem
|
|
|
|
* appropriate. If MALLOC is undefined, malloc will be invoked
|
|
|
|
* directly -- and assumed always to succeed.
|
|
|
|
* #define Omit_Private_Memory to omit logic (added Jan. 1998) for making
|
|
|
|
* memory allocations from a private pool of memory when possible.
|
|
|
|
* When used, the private pool is PRIVATE_MEM bytes long: 2304 bytes,
|
|
|
|
* unless #defined to be a different length. This default length
|
|
|
|
* suffices to get rid of MALLOC calls except for unusual cases,
|
|
|
|
* such as decimal-to-binary conversion of a very long string of
|
|
|
|
* digits. The longest string dtoa can return is about 751 bytes
|
|
|
|
* long. For conversions by strtod of strings of 800 digits and
|
|
|
|
* all dtoa conversions in single-threaded executions with 8-byte
|
|
|
|
* pointers, PRIVATE_MEM >= 7400 appears to suffice; with 4-byte
|
|
|
|
* pointers, PRIVATE_MEM >= 7112 appears adequate.
|
|
|
|
* #define INFNAN_CHECK on IEEE systems to cause strtod to check for
|
|
|
|
* Infinity and NaN (case insensitively). On some systems (e.g.,
|
|
|
|
* some HP systems), it may be necessary to #define NAN_WORD0
|
|
|
|
* appropriately -- to the most significant word of a quiet NaN.
|
|
|
|
* (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)
|
|
|
|
* When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,
|
|
|
|
* strtod also accepts (case insensitively) strings of the form
|
|
|
|
* NaN(x), where x is a string of hexadecimal digits and spaces;
|
|
|
|
* if there is only one string of hexadecimal digits, it is taken
|
|
|
|
* for the 52 fraction bits of the resulting NaN; if there are two
|
|
|
|
* or more strings of hex digits, the first is for the high 20 bits,
|
|
|
|
* the second and subsequent for the low 32 bits, with intervening
|
|
|
|
* white space ignored; but if this results in none of the 52
|
|
|
|
* fraction bits being on (an IEEE Infinity symbol), then NAN_WORD0
|
|
|
|
* and NAN_WORD1 are used instead.
|
|
|
|
* #define MULTIPLE_THREADS if the system offers preemptively scheduled
|
|
|
|
* multiple threads. In this case, you must provide (or suitably
|
|
|
|
* #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed
|
|
|
|
* by FREE_DTOA_LOCK(n) for n = 0 or 1. (The second lock, accessed
|
|
|
|
* in pow5mult, ensures lazy evaluation of only one copy of high
|
|
|
|
* powers of 5; omitting this lock would introduce a small
|
|
|
|
* probability of wasting memory, but would otherwise be harmless.)
|
|
|
|
* You must also invoke freedtoa(s) to free the value s returned by
|
|
|
|
* dtoa. You may do so whether or not MULTIPLE_THREADS is #defined.
|
|
|
|
* #define NO_IEEE_Scale to disable new (Feb. 1997) logic in strtod that
|
|
|
|
* avoids underflows on inputs whose result does not underflow.
|
|
|
|
* If you #define NO_IEEE_Scale on a machine that uses IEEE-format
|
|
|
|
* floating-point numbers and flushes underflows to zero rather
|
|
|
|
* than implementing gradual underflow, then you must also #define
|
|
|
|
* Sudden_Underflow.
|
|
|
|
* #define YES_ALIAS to permit aliasing certain double values with
|
|
|
|
* arrays of ULongs. This leads to slightly better code with
|
|
|
|
* some compilers and was always used prior to 19990916, but it
|
|
|
|
* is not strictly legal and can cause trouble with aggressively
|
|
|
|
* optimizing compilers (e.g., gcc 2.95.1 under -O2).
|
|
|
|
* #define USE_LOCALE to use the current locale's decimal_point value.
|
|
|
|
* #define SET_INEXACT if IEEE arithmetic is being used and extra
|
|
|
|
* computation should be done to set the inexact flag when the
|
|
|
|
* result is inexact and avoid setting inexact when the result
|
|
|
|
* is exact. In this case, dtoa.c must be compiled in
|
|
|
|
* an environment, perhaps provided by #include "dtoa.c" in a
|
|
|
|
* suitable wrapper, that defines two functions,
|
|
|
|
* int get_inexact(void);
|
|
|
|
* void clear_inexact(void);
|
|
|
|
* such that get_inexact() returns a nonzero value if the
|
|
|
|
* inexact bit is already set, and clear_inexact() sets the
|
|
|
|
* inexact bit to 0. When SET_INEXACT is #defined, strtod
|
|
|
|
* also does extra computations to set the underflow and overflow
|
|
|
|
* flags when appropriate (i.e., when the result is tiny and
|
|
|
|
* inexact or when it is a numeric value rounded to +-infinity).
|
|
|
|
* #define NO_ERRNO if strtod should not assign errno = ERANGE when
|
|
|
|
* the result overflows to +-Infinity or underflows to 0.
|
|
|
|
*/
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-27 10:33:12 +04:00
|
|
|
#ifdef WORDS_BIGENDIAN
|
2007-08-22 00:57:48 +04:00
|
|
|
#define IEEE_BIG_ENDIAN
|
|
|
|
#else
|
|
|
|
#define IEEE_LITTLE_ENDIAN
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef __vax__
|
|
|
|
#define VAX
|
|
|
|
#undef IEEE_BIG_ENDIAN
|
|
|
|
#undef IEEE_LITTLE_ENDIAN
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(__arm__) && !defined(__VFP_FP__)
|
|
|
|
#define IEEE_BIG_ENDIAN
|
|
|
|
#undef IEEE_LITTLE_ENDIAN
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#undef Long
|
|
|
|
#undef ULong
|
|
|
|
|
|
|
|
#if SIZEOF_INT == 4
|
|
|
|
#define Long int
|
|
|
|
#define ULong unsigned int
|
|
|
|
#elif SIZEOF_LONG == 4
|
|
|
|
#define Long long int
|
|
|
|
#define ULong unsigned long int
|
|
|
|
#endif
|
|
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|
|
2007-08-27 10:33:12 +04:00
|
|
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#if HAVE_LONG_LONG
|
|
|
|
#define Llong LONG_LONG
|
2007-08-22 00:57:48 +04:00
|
|
|
#endif
|
|
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|
|
#ifdef DEBUG
|
|
|
|
#include "stdio.h"
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|
|
#define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
|
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|
|
#endif
|
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|
|
|
#include "stdlib.h"
|
|
|
|
#include "string.h"
|
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|
|
#ifdef USE_LOCALE
|
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|
|
#include "locale.h"
|
|
|
|
#endif
|
|
|
|
|
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|
|
#ifdef MALLOC
|
|
|
|
extern void *MALLOC(size_t);
|
|
|
|
#else
|
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|
|
#define MALLOC malloc
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef Omit_Private_Memory
|
|
|
|
#ifndef PRIVATE_MEM
|
|
|
|
#define PRIVATE_MEM 2304
|
|
|
|
#endif
|
|
|
|
#define PRIVATE_mem ((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
|
|
|
|
static double private_mem[PRIVATE_mem], *pmem_next = private_mem;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#undef IEEE_Arith
|
|
|
|
#undef Avoid_Underflow
|
|
|
|
#ifdef IEEE_BIG_ENDIAN
|
|
|
|
#define IEEE_Arith
|
|
|
|
#endif
|
|
|
|
#ifdef IEEE_LITTLE_ENDIAN
|
|
|
|
#define IEEE_Arith
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include "errno.h"
|
|
|
|
|
|
|
|
#ifdef Bad_float_h
|
|
|
|
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
#define DBL_DIG 15
|
|
|
|
#define DBL_MAX_10_EXP 308
|
|
|
|
#define DBL_MAX_EXP 1024
|
|
|
|
#define FLT_RADIX 2
|
|
|
|
#endif /*IEEE_Arith*/
|
|
|
|
|
|
|
|
#ifdef IBM
|
|
|
|
#define DBL_DIG 16
|
|
|
|
#define DBL_MAX_10_EXP 75
|
|
|
|
#define DBL_MAX_EXP 63
|
|
|
|
#define FLT_RADIX 16
|
|
|
|
#define DBL_MAX 7.2370055773322621e+75
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef VAX
|
|
|
|
#define DBL_DIG 16
|
|
|
|
#define DBL_MAX_10_EXP 38
|
|
|
|
#define DBL_MAX_EXP 127
|
|
|
|
#define FLT_RADIX 2
|
|
|
|
#define DBL_MAX 1.7014118346046923e+38
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef LONG_MAX
|
|
|
|
#define LONG_MAX 2147483647
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#else /* ifndef Bad_float_h */
|
|
|
|
#include "float.h"
|
|
|
|
#endif /* Bad_float_h */
|
|
|
|
|
|
|
|
#ifndef __MATH_H__
|
|
|
|
#include "math.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
extern "C" {
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(IEEE_LITTLE_ENDIAN) + defined(IEEE_BIG_ENDIAN) + defined(VAX) + defined(IBM) != 1
|
|
|
|
Exactly one of IEEE_LITTLE_ENDIAN, IEEE_BIG_ENDIAN, VAX, or IBM should be defined.
|
|
|
|
#endif
|
|
|
|
|
|
|
|
typedef union { double d; ULong L[2]; } U;
|
|
|
|
|
|
|
|
#ifdef YES_ALIAS
|
|
|
|
#define dval(x) x
|
|
|
|
#ifdef IEEE_LITTLE_ENDIAN
|
|
|
|
#define word0(x) ((ULong *)&x)[1]
|
|
|
|
#define word1(x) ((ULong *)&x)[0]
|
|
|
|
#else
|
|
|
|
#define word0(x) ((ULong *)&x)[0]
|
|
|
|
#define word1(x) ((ULong *)&x)[1]
|
|
|
|
#endif
|
|
|
|
#else
|
|
|
|
#ifdef IEEE_LITTLE_ENDIAN
|
|
|
|
#define word0(x) ((U*)&x)->L[1]
|
|
|
|
#define word1(x) ((U*)&x)->L[0]
|
|
|
|
#else
|
|
|
|
#define word0(x) ((U*)&x)->L[0]
|
|
|
|
#define word1(x) ((U*)&x)->L[1]
|
|
|
|
#endif
|
|
|
|
#define dval(x) ((U*)&x)->d
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* The following definition of Storeinc is appropriate for MIPS processors.
|
|
|
|
* An alternative that might be better on some machines is
|
|
|
|
* #define Storeinc(a,b,c) (*a++ = b << 16 | c & 0xffff)
|
|
|
|
*/
|
|
|
|
#if defined(IEEE_LITTLE_ENDIAN) + defined(VAX) + defined(__arm__)
|
|
|
|
#define Storeinc(a,b,c) (((unsigned short *)a)[1] = (unsigned short)b, \
|
|
|
|
((unsigned short *)a)[0] = (unsigned short)c, a++)
|
|
|
|
#else
|
|
|
|
#define Storeinc(a,b,c) (((unsigned short *)a)[0] = (unsigned short)b, \
|
|
|
|
((unsigned short *)a)[1] = (unsigned short)c, a++)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* #define P DBL_MANT_DIG */
|
|
|
|
/* Ten_pmax = floor(P*log(2)/log(5)) */
|
|
|
|
/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */
|
|
|
|
/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */
|
|
|
|
/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */
|
|
|
|
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
#define Exp_shift 20
|
|
|
|
#define Exp_shift1 20
|
|
|
|
#define Exp_msk1 0x100000
|
|
|
|
#define Exp_msk11 0x100000
|
|
|
|
#define Exp_mask 0x7ff00000
|
|
|
|
#define P 53
|
|
|
|
#define Bias 1023
|
|
|
|
#define Emin (-1022)
|
|
|
|
#define Exp_1 0x3ff00000
|
|
|
|
#define Exp_11 0x3ff00000
|
|
|
|
#define Ebits 11
|
|
|
|
#define Frac_mask 0xfffff
|
|
|
|
#define Frac_mask1 0xfffff
|
|
|
|
#define Ten_pmax 22
|
|
|
|
#define Bletch 0x10
|
|
|
|
#define Bndry_mask 0xfffff
|
|
|
|
#define Bndry_mask1 0xfffff
|
|
|
|
#define LSB 1
|
|
|
|
#define Sign_bit 0x80000000
|
|
|
|
#define Log2P 1
|
|
|
|
#define Tiny0 0
|
|
|
|
#define Tiny1 1
|
|
|
|
#define Quick_max 14
|
|
|
|
#define Int_max 14
|
|
|
|
#ifndef NO_IEEE_Scale
|
|
|
|
#define Avoid_Underflow
|
|
|
|
#ifdef Flush_Denorm /* debugging option */
|
|
|
|
#undef Sudden_Underflow
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef Flt_Rounds
|
|
|
|
#ifdef FLT_ROUNDS
|
|
|
|
#define Flt_Rounds FLT_ROUNDS
|
|
|
|
#else
|
|
|
|
#define Flt_Rounds 1
|
|
|
|
#endif
|
|
|
|
#endif /*Flt_Rounds*/
|
|
|
|
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
#define Rounding rounding
|
|
|
|
#undef Check_FLT_ROUNDS
|
|
|
|
#define Check_FLT_ROUNDS
|
|
|
|
#else
|
|
|
|
#define Rounding Flt_Rounds
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#else /* ifndef IEEE_Arith */
|
|
|
|
#undef Check_FLT_ROUNDS
|
|
|
|
#undef Honor_FLT_ROUNDS
|
|
|
|
#undef SET_INEXACT
|
|
|
|
#undef Sudden_Underflow
|
|
|
|
#define Sudden_Underflow
|
|
|
|
#ifdef IBM
|
|
|
|
#undef Flt_Rounds
|
|
|
|
#define Flt_Rounds 0
|
|
|
|
#define Exp_shift 24
|
|
|
|
#define Exp_shift1 24
|
|
|
|
#define Exp_msk1 0x1000000
|
|
|
|
#define Exp_msk11 0x1000000
|
|
|
|
#define Exp_mask 0x7f000000
|
|
|
|
#define P 14
|
|
|
|
#define Bias 65
|
|
|
|
#define Exp_1 0x41000000
|
|
|
|
#define Exp_11 0x41000000
|
|
|
|
#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */
|
|
|
|
#define Frac_mask 0xffffff
|
|
|
|
#define Frac_mask1 0xffffff
|
|
|
|
#define Bletch 4
|
|
|
|
#define Ten_pmax 22
|
|
|
|
#define Bndry_mask 0xefffff
|
|
|
|
#define Bndry_mask1 0xffffff
|
|
|
|
#define LSB 1
|
|
|
|
#define Sign_bit 0x80000000
|
|
|
|
#define Log2P 4
|
|
|
|
#define Tiny0 0x100000
|
|
|
|
#define Tiny1 0
|
|
|
|
#define Quick_max 14
|
|
|
|
#define Int_max 15
|
|
|
|
#else /* VAX */
|
|
|
|
#undef Flt_Rounds
|
|
|
|
#define Flt_Rounds 1
|
|
|
|
#define Exp_shift 23
|
|
|
|
#define Exp_shift1 7
|
|
|
|
#define Exp_msk1 0x80
|
|
|
|
#define Exp_msk11 0x800000
|
|
|
|
#define Exp_mask 0x7f80
|
|
|
|
#define P 56
|
|
|
|
#define Bias 129
|
|
|
|
#define Exp_1 0x40800000
|
|
|
|
#define Exp_11 0x4080
|
|
|
|
#define Ebits 8
|
|
|
|
#define Frac_mask 0x7fffff
|
|
|
|
#define Frac_mask1 0xffff007f
|
|
|
|
#define Ten_pmax 24
|
|
|
|
#define Bletch 2
|
|
|
|
#define Bndry_mask 0xffff007f
|
|
|
|
#define Bndry_mask1 0xffff007f
|
|
|
|
#define LSB 0x10000
|
|
|
|
#define Sign_bit 0x8000
|
|
|
|
#define Log2P 1
|
|
|
|
#define Tiny0 0x80
|
|
|
|
#define Tiny1 0
|
|
|
|
#define Quick_max 15
|
|
|
|
#define Int_max 15
|
|
|
|
#endif /* IBM, VAX */
|
|
|
|
#endif /* IEEE_Arith */
|
|
|
|
|
|
|
|
#ifndef IEEE_Arith
|
|
|
|
#define ROUND_BIASED
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef RND_PRODQUOT
|
|
|
|
#define rounded_product(a,b) a = rnd_prod(a, b)
|
|
|
|
#define rounded_quotient(a,b) a = rnd_quot(a, b)
|
|
|
|
extern double rnd_prod(double, double), rnd_quot(double, double);
|
|
|
|
#else
|
|
|
|
#define rounded_product(a,b) a *= b
|
|
|
|
#define rounded_quotient(a,b) a /= b
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define Big0 (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))
|
|
|
|
#define Big1 0xffffffff
|
|
|
|
|
|
|
|
#ifndef Pack_32
|
|
|
|
#define Pack_32
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define FFFFFFFF 0xffffffffUL
|
|
|
|
|
|
|
|
#ifdef NO_LONG_LONG
|
|
|
|
#undef ULLong
|
|
|
|
#ifdef Just_16
|
|
|
|
#undef Pack_32
|
|
|
|
/* When Pack_32 is not defined, we store 16 bits per 32-bit Long.
|
|
|
|
* This makes some inner loops simpler and sometimes saves work
|
|
|
|
* during multiplications, but it often seems to make things slightly
|
|
|
|
* slower. Hence the default is now to store 32 bits per Long.
|
|
|
|
*/
|
|
|
|
#endif
|
|
|
|
#else /* long long available */
|
|
|
|
#ifndef Llong
|
|
|
|
#define Llong long long
|
|
|
|
#endif
|
|
|
|
#ifndef ULLong
|
|
|
|
#define ULLong unsigned Llong
|
|
|
|
#endif
|
|
|
|
#endif /* NO_LONG_LONG */
|
|
|
|
|
|
|
|
#ifndef MULTIPLE_THREADS
|
|
|
|
#define ACQUIRE_DTOA_LOCK(n) /*nothing*/
|
|
|
|
#define FREE_DTOA_LOCK(n) /*nothing*/
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define Kmax 15
|
|
|
|
|
|
|
|
struct Bigint {
|
|
|
|
struct Bigint *next;
|
|
|
|
int k, maxwds, sign, wds;
|
|
|
|
ULong x[1];
|
|
|
|
};
|
|
|
|
|
|
|
|
typedef struct Bigint Bigint;
|
|
|
|
|
|
|
|
static Bigint *freelist[Kmax+1];
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
Balloc(int k)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
int x;
|
|
|
|
Bigint *rv;
|
|
|
|
#ifndef Omit_Private_Memory
|
|
|
|
unsigned int len;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ACQUIRE_DTOA_LOCK(0);
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((rv = freelist[k]) != 0) {
|
2007-08-22 00:57:48 +04:00
|
|
|
freelist[k] = rv->next;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
|
|
|
else {
|
2007-08-22 00:57:48 +04:00
|
|
|
x = 1 << k;
|
|
|
|
#ifdef Omit_Private_Memory
|
|
|
|
rv = (Bigint *)MALLOC(sizeof(Bigint) + (x-1)*sizeof(ULong));
|
|
|
|
#else
|
|
|
|
len = (sizeof(Bigint) + (x-1)*sizeof(ULong) + sizeof(double) - 1)
|
|
|
|
/sizeof(double);
|
|
|
|
if (pmem_next - private_mem + len <= PRIVATE_mem) {
|
|
|
|
rv = (Bigint*)pmem_next;
|
|
|
|
pmem_next += len;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
rv = (Bigint*)MALLOC(len*sizeof(double));
|
|
|
|
#endif
|
|
|
|
rv->k = k;
|
|
|
|
rv->maxwds = x;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
FREE_DTOA_LOCK(0);
|
|
|
|
rv->sign = rv->wds = 0;
|
|
|
|
return rv;
|
|
|
|
}
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
static void
|
2007-08-22 19:08:09 +04:00
|
|
|
Bfree(Bigint *v)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
if (v) {
|
|
|
|
ACQUIRE_DTOA_LOCK(0);
|
|
|
|
v->next = freelist[v->k];
|
|
|
|
freelist[v->k] = v;
|
|
|
|
FREE_DTOA_LOCK(0);
|
|
|
|
}
|
|
|
|
}
|
* sprintf.c (rb_str_format): allow %c to print one character
string (e.g. ?x).
* lib/tempfile.rb (Tempfile::make_tmpname): put dot between
basename and pid. [ruby-talk:196272]
* parse.y (do_block): remove -> style block.
* parse.y (parser_yylex): remove tLAMBDA_ARG.
* eval.c (rb_call0): binding for the return event hook should have
consistent scope. [ruby-core:07928]
* eval.c (proc_invoke): return behavior should depend whether it
is surrounded by a lambda or a mere block.
* eval.c (formal_assign): handles post splat arguments.
* eval.c (rb_call0): ditto.
* st.c (strhash): use FNV-1a hash.
* parse.y (parser_yylex): removed experimental ';;' terminator.
* eval.c (rb_node_arity): should be aware of post splat arguments.
* eval.c (rb_proc_arity): ditto.
* parse.y (f_args): syntax rule enhanced to support arguments
after the splat.
* parse.y (block_param): ditto for block parameters.
* parse.y (f_post_arg): mandatory formal arguments after the splat
argument.
* parse.y (new_args_gen): generate nodes for mandatory formal
arguments after the splat argument.
* eval.c (rb_eval): dispatch mandatory formal arguments after the
splat argument.
* parse.y (args): allow more than one splat in the argument list.
* parse.y (method_call): allow aref [] to accept all kind of
method argument, including assocs, splat, and block argument.
* eval.c (SETUP_ARGS0): prepare block argument as well.
* lib/mathn.rb (Integer): remove Integer#gcd2. [ruby-core:07931]
* eval.c (error_line): print receivers true/false/nil specially.
* eval.c (rb_proc_yield): handles parameters in yield semantics.
* eval.c (nil_yield): gives LocalJumpError to denote no block
error.
* io.c (rb_io_getc): now takes one-character string.
* string.c (rb_str_hash): use FNV-1a hash from Fowler/Noll/Vo
hashing algorithm.
* string.c (rb_str_aref): str[0] now returns 1 character string,
instead of a fixnum. [Ruby2]
* parse.y (parser_yylex): ?c now returns 1 character string,
instead of a fixnum. [Ruby2]
* string.c (rb_str_aset): no longer support fixnum insertion.
* eval.c (umethod_bind): should not update original class.
[ruby-dev:28636]
* eval.c (ev_const_get): should support constant access from
within instance_eval(). [ruby-dev:28327]
* time.c (time_timeval): should round for usec floating
number. [ruby-core:07896]
* time.c (time_add): ditto.
* dir.c (sys_warning): should not call a vararg function
rb_sys_warning() indirectly. [ruby-core:07886]
* numeric.c (flo_divmod): the first element of Float#divmod should
be an integer. [ruby-dev:28589]
* test/ruby/test_float.rb: add tests for divmod, div, modulo and remainder.
* re.c (rb_reg_initialize): should not allow modifying literal
regexps. frozen check moved from rb_reg_initialize_m as well.
* re.c (rb_reg_initialize): should not modify untainted objects in
safe levels higher than 3.
* re.c (rb_memcmp): type change from char* to const void*.
* dir.c (dir_close): should not close untainted dir stream.
* dir.c (GetDIR): add tainted/frozen check for each dir operation.
* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_symbol_arg):
typo fixed. a patch from Florian Gross <florg at florg.net>.
* eval.c (EXEC_EVENT_HOOK): trace_func may remove itself from
event_hooks. no guarantee for arbitrary hook deletion.
[ruby-dev:28632]
* util.c (ruby_strtod): differ addition to minimize error.
[ruby-dev:28619]
* util.c (ruby_strtod): should not raise ERANGE when the input
string does not have any digits. [ruby-dev:28629]
* eval.c (proc_invoke): should restore old ruby_frame->block.
thanks to ts <decoux at moulon.inra.fr>. [ruby-core:07833]
also fix [ruby-dev:28614] as well.
* signal.c (trap): sig should be less then NSIG. Coverity found
this bug. a patch from Kevin Tew <tewk at tewk.com>.
[ruby-core:07823]
* math.c (math_log2): add new method inspired by
[ruby-talk:191237].
* math.c (math_log): add optional base argument to Math::log().
[ruby-talk:191308]
* ext/syck/emitter.c (syck_scan_scalar): avoid accessing
uninitialized array element. a patch from Pat Eyler
<rubypate at gmail.com>. [ruby-core:07809]
* array.c (rb_ary_fill): initialize local variables first. a
patch from Pat Eyler <rubypate at gmail.com>. [ruby-core:07810]
* ext/syck/yaml2byte.c (syck_yaml2byte_handler): need to free
type_tag. a patch from Pat Eyler <rubypate at gmail.com>.
[ruby-core:07808]
* ext/socket/socket.c (make_hostent_internal): accept ai_family
check from Sam Roberts <sroberts at uniserve.com>.
[ruby-core:07691]
* util.c (ruby_strtod): should not cut off 18 digits for no
reason. [ruby-core:07796]
* array.c (rb_ary_fill): internalize local variable "beg" to
pacify Coverity. [ruby-core:07770]
* pack.c (pack_unpack): now supports CRLF newlines. a patch from
<tommy at tmtm.org>. [ruby-dev:28601]
* applied code clean-up patch from Stefan Huehner
<stefan at huehner.org>. [ruby-core:07764]
* lib/jcode.rb (String::tr_s): should have translated non
squeezing character sequence (i.e. a character) as well. thanks
to Hiroshi Ichikawa <gimite at gimite.ddo.jp> [ruby-list:42090]
* ext/socket/socket.c: document update patch from Sam Roberts
<sroberts at uniserve.com>. [ruby-core:07701]
* lib/mathn.rb (Integer): need not to remove gcd2. a patch from
NARUSE, Yui <naruse at airemix.com>. [ruby-dev:28570]
* parse.y (arg): too much NEW_LIST()
* eval.c (SETUP_ARGS0): remove unnecessary access to nd_alen.
* eval.c (rb_eval): use ARGSCAT for NODE_OP_ASGN1.
[ruby-dev:28585]
* parse.y (arg): use NODE_ARGSCAT for placeholder.
* lib/getoptlong.rb (GetoptLong::get): RDoc update patch from
mathew <meta at pobox.com>. [ruby-core:07738]
* variable.c (rb_const_set): raise error when no target klass is
supplied. [ruby-dev:28582]
* prec.c (prec_prec_f): documentation patch from
<gerardo.santana at gmail.com>. [ruby-core:07689]
* bignum.c (rb_big_pow): second operand may be too big even if
it's a Fixnum. [ruby-talk:187984]
* README.EXT: update symbol description. [ruby-talk:188104]
* COPYING: explicitly note GPLv2. [ruby-talk:187922]
* parse.y: remove some obsolete syntax rules (unparenthesized
method calls in argument list).
* eval.c (rb_call0): insecure calling should be checked for non
NODE_SCOPE method invocations too.
* eval.c (rb_alias): should preserve the current safe level as
well as method definition.
* process.c (rb_f_sleep): remove RDoc description about SIGALRM
which is not valid on the current implementation. [ruby-dev:28464]
Thu Mar 23 21:40:47 2006 K.Kosako <sndgk393 AT ybb.ne.jp>
* eval.c (method_missing): should support argument splat in
super. a bug in combination of super, splat and
method_missing. [ruby-talk:185438]
* configure.in: Solaris SunPro compiler -rapth patch from
<kuwa at labs.fujitsu.com>. [ruby-dev:28443]
* configure.in: remove enable_rpath=no for Solaris.
[ruby-dev:28440]
* ext/win32ole/win32ole.c (ole_val2olevariantdata): change behavior
of converting OLE Variant object with VT_ARRAY|VT_UI1 and Ruby
String object.
* ruby.1: a clarification patch from David Lutterkort
<dlutter at redhat.com>. [ruby-core:7508]
* lib/rdoc/ri/ri_paths.rb (RI::Paths): adding paths from rubygems
directories. a patch from Eric Hodel <drbrain at segment7.net>.
[ruby-core:07423]
* eval.c (rb_clear_cache_by_class): clearing wrong cache.
* ext/extmk.rb: use :remove_destination to install extension libraries
to avoid SEGV. [ruby-dev:28417]
* eval.c (rb_thread_fd_writable): should not re-schedule output
from KILLED thread (must be error printing).
* array.c (rb_ary_flatten_bang): allow specifying recursion
level. [ruby-talk:182170]
* array.c (rb_ary_flatten): ditto.
* gc.c (add_heap): a heap_slots may overflow. a patch from Stefan
Weil <weil at mail.berlios.de>.
* eval.c (rb_call): use separate cache for fcall/vcall
invocation.
* eval.c (rb_eval): NODE_FCALL, NODE_VCALL can call local
functions.
* eval.c (rb_mod_local): a new method to specify newly added
visibility "local".
* eval.c (search_method): search for local methods which are
visible only from the current class.
* class.c (rb_class_local_methods): a method to list local methods.
* object.c (Init_Object): add BasicObject class as a top level
BlankSlate class.
* ruby.h (SYM2ID): should not cast to signed long.
[ruby-core:07414]
* class.c (rb_include_module): allow module duplication.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10235 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2006-06-10 01:20:17 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
#define Bcopy(x,y) memcpy((char *)&x->sign, (char *)&y->sign, \
|
|
|
|
y->wds*sizeof(Long) + 2*sizeof(int))
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
multadd(Bigint *b, int m, int a) /* multiply by m and add a */
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
int i, wds;
|
|
|
|
#ifdef ULLong
|
|
|
|
ULong *x;
|
|
|
|
ULLong carry, y;
|
|
|
|
#else
|
|
|
|
ULong carry, *x, y;
|
|
|
|
#ifdef Pack_32
|
|
|
|
ULong xi, z;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
Bigint *b1;
|
|
|
|
|
|
|
|
wds = b->wds;
|
|
|
|
x = b->x;
|
|
|
|
i = 0;
|
|
|
|
carry = a;
|
|
|
|
do {
|
|
|
|
#ifdef ULLong
|
|
|
|
y = *x * (ULLong)m + carry;
|
|
|
|
carry = y >> 32;
|
|
|
|
*x++ = y & FFFFFFFF;
|
|
|
|
#else
|
|
|
|
#ifdef Pack_32
|
|
|
|
xi = *x;
|
|
|
|
y = (xi & 0xffff) * m + carry;
|
|
|
|
z = (xi >> 16) * m + (y >> 16);
|
|
|
|
carry = z >> 16;
|
|
|
|
*x++ = (z << 16) + (y & 0xffff);
|
|
|
|
#else
|
|
|
|
y = *x * m + carry;
|
|
|
|
carry = y >> 16;
|
|
|
|
*x++ = y & 0xffff;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
} while (++i < wds);
|
|
|
|
if (carry) {
|
|
|
|
if (wds >= b->maxwds) {
|
|
|
|
b1 = Balloc(b->k+1);
|
|
|
|
Bcopy(b1, b);
|
|
|
|
Bfree(b);
|
|
|
|
b = b1;
|
|
|
|
}
|
|
|
|
b->x[wds++] = carry;
|
|
|
|
b->wds = wds;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
return b;
|
|
|
|
}
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
s2b(const char *s, int nd0, int nd, ULong y9)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
Bigint *b;
|
|
|
|
int i, k;
|
|
|
|
Long x, y;
|
|
|
|
|
|
|
|
x = (nd + 8) / 9;
|
|
|
|
for (k = 0, y = 1; x > y; y <<= 1, k++) ;
|
|
|
|
#ifdef Pack_32
|
|
|
|
b = Balloc(k);
|
|
|
|
b->x[0] = y9;
|
|
|
|
b->wds = 1;
|
|
|
|
#else
|
|
|
|
b = Balloc(k+1);
|
|
|
|
b->x[0] = y9 & 0xffff;
|
|
|
|
b->wds = (b->x[1] = y9 >> 16) ? 2 : 1;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
i = 9;
|
|
|
|
if (9 < nd0) {
|
|
|
|
s += 9;
|
|
|
|
do {
|
|
|
|
b = multadd(b, 10, *s++ - '0');
|
|
|
|
} while (++i < nd0);
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
s += 10;
|
|
|
|
for (; i < nd; i++)
|
|
|
|
b = multadd(b, 10, *s++ - '0');
|
|
|
|
return b;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2007-08-22 19:08:09 +04:00
|
|
|
hi0bits(register ULong x)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
register int k = 0;
|
|
|
|
|
|
|
|
if (!(x & 0xffff0000)) {
|
|
|
|
k = 16;
|
|
|
|
x <<= 16;
|
2004-05-14 07:17:50 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
if (!(x & 0xff000000)) {
|
|
|
|
k += 8;
|
|
|
|
x <<= 8;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
if (!(x & 0xf0000000)) {
|
|
|
|
k += 4;
|
|
|
|
x <<= 4;
|
2004-07-14 07:32:20 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
if (!(x & 0xc0000000)) {
|
|
|
|
k += 2;
|
|
|
|
x <<= 2;
|
|
|
|
}
|
|
|
|
if (!(x & 0x80000000)) {
|
|
|
|
k++;
|
|
|
|
if (!(x & 0x40000000))
|
|
|
|
return 32;
|
|
|
|
}
|
|
|
|
return k;
|
|
|
|
}
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
static int
|
2007-08-22 19:08:09 +04:00
|
|
|
lo0bits(ULong *y)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
register int k;
|
|
|
|
register ULong x = *y;
|
|
|
|
|
|
|
|
if (x & 7) {
|
|
|
|
if (x & 1)
|
|
|
|
return 0;
|
|
|
|
if (x & 2) {
|
|
|
|
*y = x >> 1;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
*y = x >> 2;
|
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
k = 0;
|
|
|
|
if (!(x & 0xffff)) {
|
|
|
|
k = 16;
|
|
|
|
x >>= 16;
|
|
|
|
}
|
|
|
|
if (!(x & 0xff)) {
|
|
|
|
k += 8;
|
|
|
|
x >>= 8;
|
|
|
|
}
|
|
|
|
if (!(x & 0xf)) {
|
|
|
|
k += 4;
|
|
|
|
x >>= 4;
|
|
|
|
}
|
|
|
|
if (!(x & 0x3)) {
|
|
|
|
k += 2;
|
|
|
|
x >>= 2;
|
|
|
|
}
|
|
|
|
if (!(x & 1)) {
|
|
|
|
k++;
|
|
|
|
x >>= 1;
|
|
|
|
if (!x)
|
|
|
|
return 32;
|
|
|
|
}
|
|
|
|
*y = x;
|
|
|
|
return k;
|
|
|
|
}
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
i2b(int i)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
Bigint *b;
|
|
|
|
|
|
|
|
b = Balloc(1);
|
|
|
|
b->x[0] = i;
|
|
|
|
b->wds = 1;
|
|
|
|
return b;
|
|
|
|
}
|
|
|
|
|
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
mult(Bigint *a, Bigint *b)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
Bigint *c;
|
|
|
|
int k, wa, wb, wc;
|
|
|
|
ULong *x, *xa, *xae, *xb, *xbe, *xc, *xc0;
|
|
|
|
ULong y;
|
|
|
|
#ifdef ULLong
|
|
|
|
ULLong carry, z;
|
|
|
|
#else
|
|
|
|
ULong carry, z;
|
|
|
|
#ifdef Pack_32
|
|
|
|
ULong z2;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (a->wds < b->wds) {
|
|
|
|
c = a;
|
|
|
|
a = b;
|
|
|
|
b = c;
|
|
|
|
}
|
|
|
|
k = a->k;
|
|
|
|
wa = a->wds;
|
|
|
|
wb = b->wds;
|
|
|
|
wc = wa + wb;
|
|
|
|
if (wc > a->maxwds)
|
|
|
|
k++;
|
|
|
|
c = Balloc(k);
|
|
|
|
for (x = c->x, xa = x + wc; x < xa; x++)
|
|
|
|
*x = 0;
|
|
|
|
xa = a->x;
|
|
|
|
xae = xa + wa;
|
|
|
|
xb = b->x;
|
|
|
|
xbe = xb + wb;
|
|
|
|
xc0 = c->x;
|
|
|
|
#ifdef ULLong
|
|
|
|
for (; xb < xbe; xc0++) {
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((y = *xb++) != 0) {
|
2007-08-22 00:57:48 +04:00
|
|
|
x = xa;
|
|
|
|
xc = xc0;
|
|
|
|
carry = 0;
|
|
|
|
do {
|
|
|
|
z = *x++ * (ULLong)y + *xc + carry;
|
|
|
|
carry = z >> 32;
|
|
|
|
*xc++ = z & FFFFFFFF;
|
|
|
|
} while (x < xae);
|
|
|
|
*xc = carry;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
#ifdef Pack_32
|
|
|
|
for (; xb < xbe; xb++, xc0++) {
|
|
|
|
if (y = *xb & 0xffff) {
|
|
|
|
x = xa;
|
|
|
|
xc = xc0;
|
|
|
|
carry = 0;
|
|
|
|
do {
|
|
|
|
z = (*x & 0xffff) * y + (*xc & 0xffff) + carry;
|
|
|
|
carry = z >> 16;
|
|
|
|
z2 = (*x++ >> 16) * y + (*xc >> 16) + carry;
|
|
|
|
carry = z2 >> 16;
|
|
|
|
Storeinc(xc, z2, z);
|
|
|
|
} while (x < xae);
|
|
|
|
*xc = carry;
|
|
|
|
}
|
|
|
|
if (y = *xb >> 16) {
|
|
|
|
x = xa;
|
|
|
|
xc = xc0;
|
|
|
|
carry = 0;
|
|
|
|
z2 = *xc;
|
|
|
|
do {
|
|
|
|
z = (*x & 0xffff) * y + (*xc >> 16) + carry;
|
|
|
|
carry = z >> 16;
|
|
|
|
Storeinc(xc, z, z2);
|
|
|
|
z2 = (*x++ >> 16) * y + (*xc & 0xffff) + carry;
|
|
|
|
carry = z2 >> 16;
|
|
|
|
} while (x < xae);
|
|
|
|
*xc = z2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
for (; xb < xbe; xc0++) {
|
|
|
|
if (y = *xb++) {
|
|
|
|
x = xa;
|
|
|
|
xc = xc0;
|
|
|
|
carry = 0;
|
|
|
|
do {
|
|
|
|
z = *x++ * y + *xc + carry;
|
|
|
|
carry = z >> 16;
|
|
|
|
*xc++ = z & 0xffff;
|
|
|
|
} while (x < xae);
|
|
|
|
*xc = carry;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
for (xc0 = c->x, xc = xc0 + wc; wc > 0 && !*--xc; --wc) ;
|
|
|
|
c->wds = wc;
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
static Bigint *p5s;
|
|
|
|
|
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
pow5mult(Bigint *b, int k)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
Bigint *b1, *p5, *p51;
|
|
|
|
int i;
|
|
|
|
static int p05[3] = { 5, 25, 125 };
|
|
|
|
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((i = k & 3) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
b = multadd(b, p05[i-1], 0);
|
|
|
|
|
|
|
|
if (!(k >>= 2))
|
|
|
|
return b;
|
|
|
|
if (!(p5 = p5s)) {
|
|
|
|
/* first time */
|
|
|
|
#ifdef MULTIPLE_THREADS
|
|
|
|
ACQUIRE_DTOA_LOCK(1);
|
|
|
|
if (!(p5 = p5s)) {
|
|
|
|
p5 = p5s = i2b(625);
|
|
|
|
p5->next = 0;
|
|
|
|
}
|
|
|
|
FREE_DTOA_LOCK(1);
|
|
|
|
#else
|
|
|
|
p5 = p5s = i2b(625);
|
|
|
|
p5->next = 0;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
for (;;) {
|
|
|
|
if (k & 1) {
|
|
|
|
b1 = mult(b, p5);
|
|
|
|
Bfree(b);
|
|
|
|
b = b1;
|
|
|
|
}
|
|
|
|
if (!(k >>= 1))
|
|
|
|
break;
|
|
|
|
if (!(p51 = p5->next)) {
|
|
|
|
#ifdef MULTIPLE_THREADS
|
|
|
|
ACQUIRE_DTOA_LOCK(1);
|
|
|
|
if (!(p51 = p5->next)) {
|
|
|
|
p51 = p5->next = mult(p5,p5);
|
|
|
|
p51->next = 0;
|
|
|
|
}
|
|
|
|
FREE_DTOA_LOCK(1);
|
|
|
|
#else
|
|
|
|
p51 = p5->next = mult(p5,p5);
|
|
|
|
p51->next = 0;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
p5 = p51;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
return b;
|
|
|
|
}
|
|
|
|
|
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
lshift(Bigint *b, int k)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
int i, k1, n, n1;
|
|
|
|
Bigint *b1;
|
|
|
|
ULong *x, *x1, *xe, z;
|
2002-05-14 10:22:31 +04:00
|
|
|
|
2007-08-22 00:57:48 +04:00
|
|
|
#ifdef Pack_32
|
|
|
|
n = k >> 5;
|
|
|
|
#else
|
|
|
|
n = k >> 4;
|
|
|
|
#endif
|
|
|
|
k1 = b->k;
|
|
|
|
n1 = n + b->wds + 1;
|
|
|
|
for (i = b->maxwds; n1 > i; i <<= 1)
|
|
|
|
k1++;
|
|
|
|
b1 = Balloc(k1);
|
|
|
|
x1 = b1->x;
|
|
|
|
for (i = 0; i < n; i++)
|
|
|
|
*x1++ = 0;
|
|
|
|
x = b->x;
|
|
|
|
xe = x + b->wds;
|
|
|
|
#ifdef Pack_32
|
|
|
|
if (k &= 0x1f) {
|
|
|
|
k1 = 32 - k;
|
|
|
|
z = 0;
|
|
|
|
do {
|
|
|
|
*x1++ = *x << k | z;
|
|
|
|
z = *x++ >> k1;
|
|
|
|
} while (x < xe);
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((*x1 = z) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
++n1;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
if (k &= 0xf) {
|
|
|
|
k1 = 16 - k;
|
|
|
|
z = 0;
|
|
|
|
do {
|
|
|
|
*x1++ = *x << k & 0xffff | z;
|
|
|
|
z = *x++ >> k1;
|
|
|
|
} while (x < xe);
|
|
|
|
if (*x1 = z)
|
|
|
|
++n1;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
#endif
|
|
|
|
else
|
|
|
|
do {
|
|
|
|
*x1++ = *x++;
|
|
|
|
} while (x < xe);
|
|
|
|
b1->wds = n1 - 1;
|
|
|
|
Bfree(b);
|
|
|
|
return b1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2007-08-22 19:08:09 +04:00
|
|
|
cmp(Bigint *a, Bigint *b)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
ULong *xa, *xa0, *xb, *xb0;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
i = a->wds;
|
|
|
|
j = b->wds;
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (i > 1 && !a->x[i-1])
|
|
|
|
Bug("cmp called with a->x[a->wds-1] == 0");
|
|
|
|
if (j > 1 && !b->x[j-1])
|
|
|
|
Bug("cmp called with b->x[b->wds-1] == 0");
|
|
|
|
#endif
|
|
|
|
if (i -= j)
|
|
|
|
return i;
|
|
|
|
xa0 = a->x;
|
|
|
|
xa = xa0 + j;
|
|
|
|
xb0 = b->x;
|
|
|
|
xb = xb0 + j;
|
|
|
|
for (;;) {
|
|
|
|
if (*--xa != *--xb)
|
|
|
|
return *xa < *xb ? -1 : 1;
|
|
|
|
if (xa <= xa0)
|
|
|
|
break;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
return 0;
|
2002-05-14 10:22:31 +04:00
|
|
|
}
|
2007-08-22 00:57:48 +04:00
|
|
|
|
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
diff(Bigint *a, Bigint *b)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
Bigint *c;
|
|
|
|
int i, wa, wb;
|
|
|
|
ULong *xa, *xae, *xb, *xbe, *xc;
|
|
|
|
#ifdef ULLong
|
|
|
|
ULLong borrow, y;
|
|
|
|
#else
|
|
|
|
ULong borrow, y;
|
|
|
|
#ifdef Pack_32
|
|
|
|
ULong z;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
i = cmp(a,b);
|
|
|
|
if (!i) {
|
|
|
|
c = Balloc(0);
|
|
|
|
c->wds = 1;
|
|
|
|
c->x[0] = 0;
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
if (i < 0) {
|
|
|
|
c = a;
|
|
|
|
a = b;
|
|
|
|
b = c;
|
|
|
|
i = 1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
i = 0;
|
|
|
|
c = Balloc(a->k);
|
|
|
|
c->sign = i;
|
|
|
|
wa = a->wds;
|
|
|
|
xa = a->x;
|
|
|
|
xae = xa + wa;
|
|
|
|
wb = b->wds;
|
|
|
|
xb = b->x;
|
|
|
|
xbe = xb + wb;
|
|
|
|
xc = c->x;
|
|
|
|
borrow = 0;
|
|
|
|
#ifdef ULLong
|
|
|
|
do {
|
|
|
|
y = (ULLong)*xa++ - *xb++ - borrow;
|
|
|
|
borrow = y >> 32 & (ULong)1;
|
|
|
|
*xc++ = y & FFFFFFFF;
|
|
|
|
} while (xb < xbe);
|
|
|
|
while (xa < xae) {
|
|
|
|
y = *xa++ - borrow;
|
|
|
|
borrow = y >> 32 & (ULong)1;
|
|
|
|
*xc++ = y & FFFFFFFF;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
#ifdef Pack_32
|
|
|
|
do {
|
|
|
|
y = (*xa & 0xffff) - (*xb & 0xffff) - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
z = (*xa++ >> 16) - (*xb++ >> 16) - borrow;
|
|
|
|
borrow = (z & 0x10000) >> 16;
|
|
|
|
Storeinc(xc, z, y);
|
|
|
|
} while (xb < xbe);
|
|
|
|
while (xa < xae) {
|
|
|
|
y = (*xa & 0xffff) - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
z = (*xa++ >> 16) - borrow;
|
|
|
|
borrow = (z & 0x10000) >> 16;
|
|
|
|
Storeinc(xc, z, y);
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
do {
|
|
|
|
y = *xa++ - *xb++ - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
*xc++ = y & 0xffff;
|
|
|
|
} while (xb < xbe);
|
|
|
|
while (xa < xae) {
|
|
|
|
y = *xa++ - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
*xc++ = y & 0xffff;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
while (!*--xc)
|
|
|
|
wa--;
|
|
|
|
c->wds = wa;
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
static double
|
2007-08-22 19:08:09 +04:00
|
|
|
ulp(double x)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
register Long L;
|
|
|
|
double a;
|
|
|
|
|
|
|
|
L = (word0(x) & Exp_mask) - (P-1)*Exp_msk1;
|
|
|
|
#ifndef Avoid_Underflow
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
if (L > 0) {
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#ifdef IBM
|
|
|
|
L |= Exp_msk1 >> 4;
|
|
|
|
#endif
|
|
|
|
word0(a) = L;
|
|
|
|
word1(a) = 0;
|
|
|
|
#ifndef Avoid_Underflow
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
L = -L >> Exp_shift;
|
|
|
|
if (L < Exp_shift) {
|
|
|
|
word0(a) = 0x80000 >> L;
|
|
|
|
word1(a) = 0;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
word0(a) = 0;
|
|
|
|
L -= Exp_shift;
|
|
|
|
word1(a) = L >= 31 ? 1 : 1 << 31 - L;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
return dval(a);
|
|
|
|
}
|
|
|
|
|
|
|
|
static double
|
2007-08-22 19:08:09 +04:00
|
|
|
b2d(Bigint *a, int *e)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
ULong *xa, *xa0, w, y, z;
|
|
|
|
int k;
|
|
|
|
double d;
|
|
|
|
#ifdef VAX
|
|
|
|
ULong d0, d1;
|
|
|
|
#else
|
|
|
|
#define d0 word0(d)
|
|
|
|
#define d1 word1(d)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
xa0 = a->x;
|
|
|
|
xa = xa0 + a->wds;
|
|
|
|
y = *--xa;
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (!y) Bug("zero y in b2d");
|
|
|
|
#endif
|
|
|
|
k = hi0bits(y);
|
|
|
|
*e = 32 - k;
|
|
|
|
#ifdef Pack_32
|
|
|
|
if (k < Ebits) {
|
2007-08-27 10:33:12 +04:00
|
|
|
d0 = Exp_1 | y >> (Ebits - k);
|
2007-08-22 00:57:48 +04:00
|
|
|
w = xa > xa0 ? *--xa : 0;
|
2007-08-27 10:33:12 +04:00
|
|
|
d1 = y << ((32-Ebits) + k) | w >> (Ebits - k);
|
2007-08-22 00:57:48 +04:00
|
|
|
goto ret_d;
|
|
|
|
}
|
|
|
|
z = xa > xa0 ? *--xa : 0;
|
|
|
|
if (k -= Ebits) {
|
2007-08-27 10:33:12 +04:00
|
|
|
d0 = Exp_1 | y << k | z >> (32 - k);
|
2007-08-22 00:57:48 +04:00
|
|
|
y = xa > xa0 ? *--xa : 0;
|
2007-08-27 10:33:12 +04:00
|
|
|
d1 = z << k | y >> (32 - k);
|
2007-08-22 00:57:48 +04:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
d0 = Exp_1 | y;
|
|
|
|
d1 = z;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
if (k < Ebits + 16) {
|
|
|
|
z = xa > xa0 ? *--xa : 0;
|
|
|
|
d0 = Exp_1 | y << k - Ebits | z >> Ebits + 16 - k;
|
|
|
|
w = xa > xa0 ? *--xa : 0;
|
|
|
|
y = xa > xa0 ? *--xa : 0;
|
|
|
|
d1 = z << k + 16 - Ebits | w << k - Ebits | y >> 16 + Ebits - k;
|
|
|
|
goto ret_d;
|
|
|
|
}
|
|
|
|
z = xa > xa0 ? *--xa : 0;
|
|
|
|
w = xa > xa0 ? *--xa : 0;
|
|
|
|
k -= Ebits + 16;
|
|
|
|
d0 = Exp_1 | y << k + 16 | z << k | w >> 16 - k;
|
|
|
|
y = xa > xa0 ? *--xa : 0;
|
|
|
|
d1 = w << k + 16 | y << k;
|
|
|
|
#endif
|
|
|
|
ret_d:
|
|
|
|
#ifdef VAX
|
|
|
|
word0(d) = d0 >> 16 | d0 << 16;
|
|
|
|
word1(d) = d1 >> 16 | d1 << 16;
|
|
|
|
#else
|
|
|
|
#undef d0
|
|
|
|
#undef d1
|
|
|
|
#endif
|
|
|
|
return dval(d);
|
|
|
|
}
|
|
|
|
|
|
|
|
static Bigint *
|
2007-08-22 19:08:09 +04:00
|
|
|
d2b(double d, int *e, int *bits)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
Bigint *b;
|
|
|
|
int de, k;
|
|
|
|
ULong *x, y, z;
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
int i;
|
|
|
|
#endif
|
|
|
|
#ifdef VAX
|
|
|
|
ULong d0, d1;
|
|
|
|
d0 = word0(d) >> 16 | word0(d) << 16;
|
|
|
|
d1 = word1(d) >> 16 | word1(d) << 16;
|
|
|
|
#else
|
|
|
|
#define d0 word0(d)
|
|
|
|
#define d1 word1(d)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef Pack_32
|
|
|
|
b = Balloc(1);
|
|
|
|
#else
|
|
|
|
b = Balloc(2);
|
|
|
|
#endif
|
|
|
|
x = b->x;
|
|
|
|
|
|
|
|
z = d0 & Frac_mask;
|
|
|
|
d0 &= 0x7fffffff; /* clear sign bit, which we ignore */
|
|
|
|
#ifdef Sudden_Underflow
|
|
|
|
de = (int)(d0 >> Exp_shift);
|
|
|
|
#ifndef IBM
|
|
|
|
z |= Exp_msk11;
|
|
|
|
#endif
|
|
|
|
#else
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((de = (int)(d0 >> Exp_shift)) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
z |= Exp_msk1;
|
|
|
|
#endif
|
|
|
|
#ifdef Pack_32
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((y = d1) != 0) {
|
|
|
|
if ((k = lo0bits(&y)) != 0) {
|
|
|
|
x[0] = y | z << (32 - k);
|
2007-08-22 00:57:48 +04:00
|
|
|
z >>= k;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
x[0] = y;
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
i =
|
|
|
|
#endif
|
|
|
|
b->wds = (x[1] = z) ? 2 : 1;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (!z)
|
|
|
|
Bug("Zero passed to d2b");
|
|
|
|
#endif
|
|
|
|
k = lo0bits(&z);
|
|
|
|
x[0] = z;
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
i =
|
|
|
|
#endif
|
|
|
|
b->wds = 1;
|
|
|
|
k += 32;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
if (y = d1) {
|
|
|
|
if (k = lo0bits(&y))
|
|
|
|
if (k >= 16) {
|
|
|
|
x[0] = y | z << 32 - k & 0xffff;
|
|
|
|
x[1] = z >> k - 16 & 0xffff;
|
|
|
|
x[2] = z >> k;
|
|
|
|
i = 2;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
x[0] = y & 0xffff;
|
|
|
|
x[1] = y >> 16 | z << 16 - k & 0xffff;
|
|
|
|
x[2] = z >> k & 0xffff;
|
|
|
|
x[3] = z >> k+16;
|
|
|
|
i = 3;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
x[0] = y & 0xffff;
|
|
|
|
x[1] = y >> 16;
|
|
|
|
x[2] = z & 0xffff;
|
|
|
|
x[3] = z >> 16;
|
|
|
|
i = 3;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (!z)
|
|
|
|
Bug("Zero passed to d2b");
|
|
|
|
#endif
|
|
|
|
k = lo0bits(&z);
|
|
|
|
if (k >= 16) {
|
|
|
|
x[0] = z;
|
|
|
|
i = 0;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
x[0] = z & 0xffff;
|
|
|
|
x[1] = z >> 16;
|
|
|
|
i = 1;
|
|
|
|
}
|
|
|
|
k += 32;
|
|
|
|
}
|
|
|
|
while (!x[i])
|
|
|
|
--i;
|
|
|
|
b->wds = i + 1;
|
|
|
|
#endif
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
if (de) {
|
|
|
|
#endif
|
|
|
|
#ifdef IBM
|
|
|
|
*e = (de - Bias - (P-1) << 2) + k;
|
|
|
|
*bits = 4*P + 8 - k - hi0bits(word0(d) & Frac_mask);
|
|
|
|
#else
|
|
|
|
*e = de - Bias - (P-1) + k;
|
|
|
|
*bits = P - k;
|
|
|
|
#endif
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
*e = de - Bias - (P-1) + 1 + k;
|
|
|
|
#ifdef Pack_32
|
|
|
|
*bits = 32*i - hi0bits(x[i-1]);
|
|
|
|
#else
|
|
|
|
*bits = (i+2)*16 - hi0bits(x[i]);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
return b;
|
|
|
|
}
|
|
|
|
#undef d0
|
|
|
|
#undef d1
|
|
|
|
|
|
|
|
static double
|
2007-08-22 19:08:09 +04:00
|
|
|
ratio(Bigint *a, Bigint *b)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
double da, db;
|
|
|
|
int k, ka, kb;
|
|
|
|
|
|
|
|
dval(da) = b2d(a, &ka);
|
|
|
|
dval(db) = b2d(b, &kb);
|
|
|
|
#ifdef Pack_32
|
|
|
|
k = ka - kb + 32*(a->wds - b->wds);
|
|
|
|
#else
|
|
|
|
k = ka - kb + 16*(a->wds - b->wds);
|
|
|
|
#endif
|
|
|
|
#ifdef IBM
|
|
|
|
if (k > 0) {
|
|
|
|
word0(da) += (k >> 2)*Exp_msk1;
|
|
|
|
if (k &= 3)
|
|
|
|
dval(da) *= 1 << k;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
k = -k;
|
|
|
|
word0(db) += (k >> 2)*Exp_msk1;
|
|
|
|
if (k &= 3)
|
|
|
|
dval(db) *= 1 << k;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
if (k > 0)
|
|
|
|
word0(da) += k*Exp_msk1;
|
|
|
|
else {
|
|
|
|
k = -k;
|
|
|
|
word0(db) += k*Exp_msk1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
return dval(da) / dval(db);
|
|
|
|
}
|
|
|
|
|
2007-08-22 19:08:09 +04:00
|
|
|
static const double
|
2007-08-22 00:57:48 +04:00
|
|
|
tens[] = {
|
|
|
|
1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
|
|
|
|
1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
|
|
|
|
1e20, 1e21, 1e22
|
|
|
|
#ifdef VAX
|
|
|
|
, 1e23, 1e24
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
2007-08-22 19:08:09 +04:00
|
|
|
static const double
|
2007-08-22 00:57:48 +04:00
|
|
|
#ifdef IEEE_Arith
|
|
|
|
bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 };
|
2007-08-22 19:08:09 +04:00
|
|
|
static const double tinytens[] = { 1e-16, 1e-32, 1e-64, 1e-128,
|
2007-08-22 00:57:48 +04:00
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
9007199254740992.*9007199254740992.e-256
|
|
|
|
/* = 2^106 * 1e-53 */
|
|
|
|
#else
|
|
|
|
1e-256
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
/* The factor of 2^53 in tinytens[4] helps us avoid setting the underflow */
|
|
|
|
/* flag unnecessarily. It leads to a song and dance at the end of strtod. */
|
|
|
|
#define Scale_Bit 0x10
|
|
|
|
#define n_bigtens 5
|
|
|
|
#else
|
|
|
|
#ifdef IBM
|
|
|
|
bigtens[] = { 1e16, 1e32, 1e64 };
|
2007-08-22 19:08:09 +04:00
|
|
|
static const double tinytens[] = { 1e-16, 1e-32, 1e-64 };
|
2007-08-22 00:57:48 +04:00
|
|
|
#define n_bigtens 3
|
|
|
|
#else
|
|
|
|
bigtens[] = { 1e16, 1e32 };
|
2007-08-22 19:08:09 +04:00
|
|
|
static const double tinytens[] = { 1e-16, 1e-32 };
|
2007-08-22 00:57:48 +04:00
|
|
|
#define n_bigtens 2
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef IEEE_Arith
|
|
|
|
#undef INFNAN_CHECK
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef INFNAN_CHECK
|
|
|
|
|
|
|
|
#ifndef NAN_WORD0
|
|
|
|
#define NAN_WORD0 0x7ff80000
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef NAN_WORD1
|
|
|
|
#define NAN_WORD1 0
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static int
|
2007-08-22 19:08:09 +04:00
|
|
|
match(const char **sp, char *t)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
int c, d;
|
2007-08-22 19:08:09 +04:00
|
|
|
const char *s = *sp;
|
2007-08-22 00:57:48 +04:00
|
|
|
|
|
|
|
while (d = *t++) {
|
|
|
|
if ((c = *++s) >= 'A' && c <= 'Z')
|
|
|
|
c += 'a' - 'A';
|
|
|
|
if (c != d)
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
*sp = s + 1;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef No_Hex_NaN
|
|
|
|
static void
|
2007-08-22 19:08:09 +04:00
|
|
|
hexnan(double *rvp, const char **sp)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
ULong c, x[2];
|
2007-08-22 19:08:09 +04:00
|
|
|
const char *s;
|
2007-08-22 00:57:48 +04:00
|
|
|
int havedig, udx0, xshift;
|
|
|
|
|
|
|
|
x[0] = x[1] = 0;
|
|
|
|
havedig = xshift = 0;
|
|
|
|
udx0 = 1;
|
|
|
|
s = *sp;
|
2007-08-22 19:08:09 +04:00
|
|
|
while (c = *(const unsigned char*)++s) {
|
2007-08-22 00:57:48 +04:00
|
|
|
if (c >= '0' && c <= '9')
|
|
|
|
c -= '0';
|
|
|
|
else if (c >= 'a' && c <= 'f')
|
|
|
|
c += 10 - 'a';
|
|
|
|
else if (c >= 'A' && c <= 'F')
|
|
|
|
c += 10 - 'A';
|
|
|
|
else if (c <= ' ') {
|
|
|
|
if (udx0 && havedig) {
|
|
|
|
udx0 = 0;
|
|
|
|
xshift = 1;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
else if (/*(*/ c == ')' && havedig) {
|
|
|
|
*sp = s + 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
return; /* invalid form: don't change *sp */
|
|
|
|
havedig = 1;
|
|
|
|
if (xshift) {
|
|
|
|
xshift = 0;
|
|
|
|
x[0] = x[1];
|
|
|
|
x[1] = 0;
|
|
|
|
}
|
|
|
|
if (udx0)
|
|
|
|
x[0] = (x[0] << 4) | (x[1] >> 28);
|
|
|
|
x[1] = (x[1] << 4) | c;
|
|
|
|
}
|
|
|
|
if ((x[0] &= 0xfffff) || x[1]) {
|
|
|
|
word0(*rvp) = Exp_mask | x[0];
|
|
|
|
word1(*rvp) = x[1];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /*No_Hex_NaN*/
|
|
|
|
#endif /* INFNAN_CHECK */
|
|
|
|
|
|
|
|
double
|
2007-08-22 19:08:09 +04:00
|
|
|
ruby_strtod(const char *s00, char **se)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
int scale;
|
|
|
|
#endif
|
|
|
|
int bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, dsign,
|
|
|
|
e, e1, esign, i, j, k, nd, nd0, nf, nz, nz0, sign;
|
2007-08-22 19:08:09 +04:00
|
|
|
const char *s, *s0, *s1;
|
2007-08-22 00:57:48 +04:00
|
|
|
double aadj, aadj1, adj, rv, rv0;
|
|
|
|
Long L;
|
|
|
|
ULong y, z;
|
|
|
|
Bigint *bb, *bb1, *bd, *bd0, *bs, *delta;
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
int inexact, oldinexact;
|
|
|
|
#endif
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
int rounding;
|
|
|
|
#endif
|
|
|
|
#ifdef USE_LOCALE
|
2007-08-22 19:08:09 +04:00
|
|
|
const char *s2;
|
2007-08-22 00:57:48 +04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
sign = nz0 = nz = 0;
|
|
|
|
dval(rv) = 0.;
|
|
|
|
for (s = s00;;s++)
|
|
|
|
switch (*s) {
|
|
|
|
case '-':
|
|
|
|
sign = 1;
|
|
|
|
/* no break */
|
|
|
|
case '+':
|
|
|
|
if (*++s)
|
|
|
|
goto break2;
|
|
|
|
/* no break */
|
|
|
|
case 0:
|
|
|
|
goto ret0;
|
|
|
|
case '\t':
|
|
|
|
case '\n':
|
|
|
|
case '\v':
|
|
|
|
case '\f':
|
|
|
|
case '\r':
|
|
|
|
case ' ':
|
|
|
|
continue;
|
|
|
|
default:
|
|
|
|
goto break2;
|
|
|
|
}
|
|
|
|
break2:
|
|
|
|
if (*s == '0') {
|
|
|
|
nz0 = 1;
|
|
|
|
while (*++s == '0') ;
|
|
|
|
if (!*s)
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
s0 = s;
|
|
|
|
y = z = 0;
|
|
|
|
for (nd = nf = 0; (c = *s) >= '0' && c <= '9'; nd++, s++)
|
|
|
|
if (nd < 9)
|
|
|
|
y = 10*y + c - '0';
|
|
|
|
else if (nd < 16)
|
|
|
|
z = 10*z + c - '0';
|
|
|
|
nd0 = nd;
|
|
|
|
#ifdef USE_LOCALE
|
|
|
|
s1 = localeconv()->decimal_point;
|
|
|
|
if (c == *s1) {
|
|
|
|
c = '.';
|
|
|
|
if (*++s1) {
|
|
|
|
s2 = s;
|
|
|
|
for (;;) {
|
|
|
|
if (*++s2 != *s1) {
|
|
|
|
c = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (!*++s1) {
|
|
|
|
s = s2;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
if (c == '.') {
|
|
|
|
c = *++s;
|
|
|
|
if (!nd) {
|
|
|
|
for (; c == '0'; c = *++s)
|
|
|
|
nz++;
|
|
|
|
if (c > '0' && c <= '9') {
|
|
|
|
s0 = s;
|
|
|
|
nf += nz;
|
|
|
|
nz = 0;
|
|
|
|
goto have_dig;
|
|
|
|
}
|
|
|
|
goto dig_done;
|
|
|
|
}
|
|
|
|
for (; c >= '0' && c <= '9'; c = *++s) {
|
|
|
|
have_dig:
|
|
|
|
nz++;
|
|
|
|
if (c -= '0') {
|
|
|
|
nf += nz;
|
|
|
|
for (i = 1; i < nz; i++)
|
|
|
|
if (nd++ < 9)
|
|
|
|
y *= 10;
|
|
|
|
else if (nd <= DBL_DIG + 1)
|
|
|
|
z *= 10;
|
|
|
|
if (nd++ < 9)
|
|
|
|
y = 10*y + c;
|
|
|
|
else if (nd <= DBL_DIG + 1)
|
|
|
|
z = 10*z + c;
|
|
|
|
nz = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
dig_done:
|
|
|
|
e = 0;
|
|
|
|
if (c == 'e' || c == 'E') {
|
|
|
|
if (!nd && !nz && !nz0) {
|
|
|
|
goto ret0;
|
|
|
|
}
|
|
|
|
s00 = s;
|
|
|
|
esign = 0;
|
|
|
|
switch (c = *++s) {
|
|
|
|
case '-':
|
|
|
|
esign = 1;
|
|
|
|
case '+':
|
|
|
|
c = *++s;
|
|
|
|
}
|
|
|
|
if (c >= '0' && c <= '9') {
|
|
|
|
while (c == '0')
|
|
|
|
c = *++s;
|
|
|
|
if (c > '0' && c <= '9') {
|
|
|
|
L = c - '0';
|
|
|
|
s1 = s;
|
|
|
|
while ((c = *++s) >= '0' && c <= '9')
|
|
|
|
L = 10*L + c - '0';
|
|
|
|
if (s - s1 > 8 || L > 19999)
|
|
|
|
/* Avoid confusion from exponents
|
|
|
|
* so large that e might overflow.
|
|
|
|
*/
|
|
|
|
e = 19999; /* safe for 16 bit ints */
|
|
|
|
else
|
|
|
|
e = (int)L;
|
|
|
|
if (esign)
|
|
|
|
e = -e;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
e = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
s = s00;
|
|
|
|
}
|
|
|
|
if (!nd) {
|
|
|
|
if (!nz && !nz0) {
|
|
|
|
#ifdef INFNAN_CHECK
|
|
|
|
/* Check for Nan and Infinity */
|
|
|
|
switch (c) {
|
|
|
|
case 'i':
|
|
|
|
case 'I':
|
|
|
|
if (match(&s,"nf")) {
|
|
|
|
--s;
|
|
|
|
if (!match(&s,"inity"))
|
|
|
|
++s;
|
|
|
|
word0(rv) = 0x7ff00000;
|
|
|
|
word1(rv) = 0;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'n':
|
|
|
|
case 'N':
|
|
|
|
if (match(&s, "an")) {
|
|
|
|
word0(rv) = NAN_WORD0;
|
|
|
|
word1(rv) = NAN_WORD1;
|
|
|
|
#ifndef No_Hex_NaN
|
|
|
|
if (*s == '(') /*)*/
|
|
|
|
hexnan(&rv, &s);
|
|
|
|
#endif
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /* INFNAN_CHECK */
|
|
|
|
ret0:
|
|
|
|
s = s00;
|
|
|
|
sign = 0;
|
|
|
|
}
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
e1 = e -= nf;
|
|
|
|
|
|
|
|
/* Now we have nd0 digits, starting at s0, followed by a
|
|
|
|
* decimal point, followed by nd-nd0 digits. The number we're
|
|
|
|
* after is the integer represented by those digits times
|
|
|
|
* 10**e */
|
|
|
|
|
|
|
|
if (!nd0)
|
|
|
|
nd0 = nd;
|
|
|
|
k = nd < DBL_DIG + 1 ? nd : DBL_DIG + 1;
|
|
|
|
dval(rv) = y;
|
|
|
|
if (k > 9) {
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
if (k > DBL_DIG)
|
|
|
|
oldinexact = get_inexact();
|
|
|
|
#endif
|
|
|
|
dval(rv) = tens[k - 9] * dval(rv) + z;
|
|
|
|
}
|
|
|
|
bd0 = 0;
|
|
|
|
if (nd <= DBL_DIG
|
|
|
|
#ifndef RND_PRODQUOT
|
|
|
|
#ifndef Honor_FLT_ROUNDS
|
|
|
|
&& Flt_Rounds == 1
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
) {
|
|
|
|
if (!e)
|
|
|
|
goto ret;
|
|
|
|
if (e > 0) {
|
|
|
|
if (e <= Ten_pmax) {
|
|
|
|
#ifdef VAX
|
|
|
|
goto vax_ovfl_check;
|
|
|
|
#else
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
/* round correctly FLT_ROUNDS = 2 or 3 */
|
|
|
|
if (sign) {
|
|
|
|
rv = -rv;
|
|
|
|
sign = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* rv = */ rounded_product(dval(rv), tens[e]);
|
|
|
|
goto ret;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
i = DBL_DIG - nd;
|
|
|
|
if (e <= Ten_pmax + i) {
|
|
|
|
/* A fancier test would sometimes let us do
|
|
|
|
* this for larger i values.
|
|
|
|
*/
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
/* round correctly FLT_ROUNDS = 2 or 3 */
|
|
|
|
if (sign) {
|
|
|
|
rv = -rv;
|
|
|
|
sign = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
e -= i;
|
|
|
|
dval(rv) *= tens[i];
|
|
|
|
#ifdef VAX
|
|
|
|
/* VAX exponent range is so narrow we must
|
|
|
|
* worry about overflow here...
|
|
|
|
*/
|
|
|
|
vax_ovfl_check:
|
|
|
|
word0(rv) -= P*Exp_msk1;
|
|
|
|
/* rv = */ rounded_product(dval(rv), tens[e]);
|
|
|
|
if ((word0(rv) & Exp_mask)
|
|
|
|
> Exp_msk1*(DBL_MAX_EXP+Bias-1-P))
|
|
|
|
goto ovfl;
|
|
|
|
word0(rv) += P*Exp_msk1;
|
|
|
|
#else
|
|
|
|
/* rv = */ rounded_product(dval(rv), tens[e]);
|
|
|
|
#endif
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#ifndef Inaccurate_Divide
|
|
|
|
else if (e >= -Ten_pmax) {
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
/* round correctly FLT_ROUNDS = 2 or 3 */
|
|
|
|
if (sign) {
|
|
|
|
rv = -rv;
|
|
|
|
sign = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* rv = */ rounded_quotient(dval(rv), tens[-e]);
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
e1 += nd - k;
|
|
|
|
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
inexact = 1;
|
|
|
|
if (k <= DBL_DIG)
|
|
|
|
oldinexact = get_inexact();
|
|
|
|
#endif
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
scale = 0;
|
|
|
|
#endif
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if ((rounding = Flt_Rounds) >= 2) {
|
|
|
|
if (sign)
|
|
|
|
rounding = rounding == 2 ? 0 : 2;
|
|
|
|
else
|
|
|
|
if (rounding != 2)
|
|
|
|
rounding = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /*IEEE_Arith*/
|
|
|
|
|
|
|
|
/* Get starting approximation = rv * 10**e1 */
|
|
|
|
|
|
|
|
if (e1 > 0) {
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((i = e1 & 15) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
dval(rv) *= tens[i];
|
|
|
|
if (e1 &= ~15) {
|
|
|
|
if (e1 > DBL_MAX_10_EXP) {
|
|
|
|
ovfl:
|
|
|
|
#ifndef NO_ERRNO
|
|
|
|
errno = ERANGE;
|
|
|
|
#endif
|
|
|
|
/* Can't trust HUGE_VAL */
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
switch (rounding) {
|
|
|
|
case 0: /* toward 0 */
|
|
|
|
case 3: /* toward -infinity */
|
|
|
|
word0(rv) = Big0;
|
|
|
|
word1(rv) = Big1;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
word0(rv) = Exp_mask;
|
|
|
|
word1(rv) = 0;
|
|
|
|
}
|
|
|
|
#else /*Honor_FLT_ROUNDS*/
|
|
|
|
word0(rv) = Exp_mask;
|
|
|
|
word1(rv) = 0;
|
|
|
|
#endif /*Honor_FLT_ROUNDS*/
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
/* set overflow bit */
|
|
|
|
dval(rv0) = 1e300;
|
|
|
|
dval(rv0) *= dval(rv0);
|
|
|
|
#endif
|
|
|
|
#else /*IEEE_Arith*/
|
|
|
|
word0(rv) = Big0;
|
|
|
|
word1(rv) = Big1;
|
|
|
|
#endif /*IEEE_Arith*/
|
|
|
|
if (bd0)
|
|
|
|
goto retfree;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
e1 >>= 4;
|
|
|
|
for (j = 0; e1 > 1; j++, e1 >>= 1)
|
|
|
|
if (e1 & 1)
|
|
|
|
dval(rv) *= bigtens[j];
|
|
|
|
/* The last multiplication could overflow. */
|
|
|
|
word0(rv) -= P*Exp_msk1;
|
|
|
|
dval(rv) *= bigtens[j];
|
|
|
|
if ((z = word0(rv) & Exp_mask)
|
|
|
|
> Exp_msk1*(DBL_MAX_EXP+Bias-P))
|
|
|
|
goto ovfl;
|
|
|
|
if (z > Exp_msk1*(DBL_MAX_EXP+Bias-1-P)) {
|
|
|
|
/* set to largest number */
|
|
|
|
/* (Can't trust DBL_MAX) */
|
|
|
|
word0(rv) = Big0;
|
|
|
|
word1(rv) = Big1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
word0(rv) += P*Exp_msk1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (e1 < 0) {
|
|
|
|
e1 = -e1;
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((i = e1 & 15) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
dval(rv) /= tens[i];
|
|
|
|
if (e1 >>= 4) {
|
|
|
|
if (e1 >= 1 << n_bigtens)
|
|
|
|
goto undfl;
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (e1 & Scale_Bit)
|
|
|
|
scale = 2*P;
|
|
|
|
for (j = 0; e1 > 0; j++, e1 >>= 1)
|
|
|
|
if (e1 & 1)
|
|
|
|
dval(rv) *= tinytens[j];
|
|
|
|
if (scale && (j = 2*P + 1 - ((word0(rv) & Exp_mask)
|
|
|
|
>> Exp_shift)) > 0) {
|
|
|
|
/* scaled rv is denormal; zap j low bits */
|
|
|
|
if (j >= 32) {
|
|
|
|
word1(rv) = 0;
|
|
|
|
if (j >= 53)
|
|
|
|
word0(rv) = (P+2)*Exp_msk1;
|
|
|
|
else
|
2007-08-27 10:33:12 +04:00
|
|
|
word0(rv) &= 0xffffffff << (j-32);
|
2007-08-22 00:57:48 +04:00
|
|
|
}
|
|
|
|
else
|
|
|
|
word1(rv) &= 0xffffffff << j;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
for (j = 0; e1 > 1; j++, e1 >>= 1)
|
|
|
|
if (e1 & 1)
|
|
|
|
dval(rv) *= tinytens[j];
|
|
|
|
/* The last multiplication could underflow. */
|
|
|
|
dval(rv0) = dval(rv);
|
|
|
|
dval(rv) *= tinytens[j];
|
|
|
|
if (!dval(rv)) {
|
|
|
|
dval(rv) = 2.*dval(rv0);
|
|
|
|
dval(rv) *= tinytens[j];
|
|
|
|
#endif
|
|
|
|
if (!dval(rv)) {
|
|
|
|
undfl:
|
|
|
|
dval(rv) = 0.;
|
|
|
|
#ifndef NO_ERRNO
|
|
|
|
errno = ERANGE;
|
|
|
|
#endif
|
|
|
|
if (bd0)
|
|
|
|
goto retfree;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
#ifndef Avoid_Underflow
|
|
|
|
word0(rv) = Tiny0;
|
|
|
|
word1(rv) = Tiny1;
|
|
|
|
/* The refinement below will clean
|
|
|
|
* this approximation up.
|
|
|
|
*/
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now the hard part -- adjusting rv to the correct value.*/
|
|
|
|
|
|
|
|
/* Put digits into bd: true value = bd * 10^e */
|
|
|
|
|
|
|
|
bd0 = s2b(s0, nd0, nd, y);
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
bd = Balloc(bd0->k);
|
|
|
|
Bcopy(bd, bd0);
|
|
|
|
bb = d2b(dval(rv), &bbe, &bbbits); /* rv = bb * 2^bbe */
|
|
|
|
bs = i2b(1);
|
|
|
|
|
|
|
|
if (e >= 0) {
|
|
|
|
bb2 = bb5 = 0;
|
|
|
|
bd2 = bd5 = e;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
bb2 = bb5 = -e;
|
|
|
|
bd2 = bd5 = 0;
|
|
|
|
}
|
|
|
|
if (bbe >= 0)
|
|
|
|
bb2 += bbe;
|
|
|
|
else
|
|
|
|
bd2 -= bbe;
|
|
|
|
bs2 = bb2;
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if (rounding != 1)
|
|
|
|
bs2++;
|
|
|
|
#endif
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
j = bbe - scale;
|
|
|
|
i = j + bbbits - 1; /* logb(rv) */
|
|
|
|
if (i < Emin) /* denormal */
|
|
|
|
j += P - Emin;
|
|
|
|
else
|
|
|
|
j = P + 1 - bbbits;
|
|
|
|
#else /*Avoid_Underflow*/
|
|
|
|
#ifdef Sudden_Underflow
|
|
|
|
#ifdef IBM
|
|
|
|
j = 1 + 4*P - 3 - bbbits + ((bbe + bbbits - 1) & 3);
|
|
|
|
#else
|
|
|
|
j = P + 1 - bbbits;
|
|
|
|
#endif
|
|
|
|
#else /*Sudden_Underflow*/
|
|
|
|
j = bbe;
|
|
|
|
i = j + bbbits - 1; /* logb(rv) */
|
|
|
|
if (i < Emin) /* denormal */
|
|
|
|
j += P - Emin;
|
|
|
|
else
|
|
|
|
j = P + 1 - bbbits;
|
|
|
|
#endif /*Sudden_Underflow*/
|
|
|
|
#endif /*Avoid_Underflow*/
|
|
|
|
bb2 += j;
|
|
|
|
bd2 += j;
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
bd2 += scale;
|
|
|
|
#endif
|
|
|
|
i = bb2 < bd2 ? bb2 : bd2;
|
|
|
|
if (i > bs2)
|
|
|
|
i = bs2;
|
|
|
|
if (i > 0) {
|
|
|
|
bb2 -= i;
|
|
|
|
bd2 -= i;
|
|
|
|
bs2 -= i;
|
|
|
|
}
|
|
|
|
if (bb5 > 0) {
|
|
|
|
bs = pow5mult(bs, bb5);
|
|
|
|
bb1 = mult(bs, bb);
|
|
|
|
Bfree(bb);
|
|
|
|
bb = bb1;
|
|
|
|
}
|
|
|
|
if (bb2 > 0)
|
|
|
|
bb = lshift(bb, bb2);
|
|
|
|
if (bd5 > 0)
|
|
|
|
bd = pow5mult(bd, bd5);
|
|
|
|
if (bd2 > 0)
|
|
|
|
bd = lshift(bd, bd2);
|
|
|
|
if (bs2 > 0)
|
|
|
|
bs = lshift(bs, bs2);
|
|
|
|
delta = diff(bb, bd);
|
|
|
|
dsign = delta->sign;
|
|
|
|
delta->sign = 0;
|
|
|
|
i = cmp(delta, bs);
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if (rounding != 1) {
|
|
|
|
if (i < 0) {
|
|
|
|
/* Error is less than an ulp */
|
|
|
|
if (!delta->x[0] && delta->wds <= 1) {
|
|
|
|
/* exact */
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (rounding) {
|
|
|
|
if (dsign) {
|
|
|
|
adj = 1.;
|
|
|
|
goto apply_adj;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (!dsign) {
|
|
|
|
adj = -1.;
|
|
|
|
if (!word1(rv)
|
|
|
|
&& !(word0(rv) & Frac_mask)) {
|
|
|
|
y = word0(rv) & Exp_mask;
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (!scale || y > 2*P*Exp_msk1)
|
|
|
|
#else
|
|
|
|
if (y)
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
delta = lshift(delta,Log2P);
|
|
|
|
if (cmp(delta, bs) <= 0)
|
|
|
|
adj = -0.5;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
apply_adj:
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (scale && (y = word0(rv) & Exp_mask)
|
|
|
|
<= 2*P*Exp_msk1)
|
|
|
|
word0(adj) += (2*P+1)*Exp_msk1 - y;
|
|
|
|
#else
|
|
|
|
#ifdef Sudden_Underflow
|
|
|
|
if ((word0(rv) & Exp_mask) <=
|
|
|
|
P*Exp_msk1) {
|
|
|
|
word0(rv) += P*Exp_msk1;
|
|
|
|
dval(rv) += adj*ulp(dval(rv));
|
|
|
|
word0(rv) -= P*Exp_msk1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif /*Sudden_Underflow*/
|
|
|
|
#endif /*Avoid_Underflow*/
|
|
|
|
dval(rv) += adj*ulp(dval(rv));
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
adj = ratio(delta, bs);
|
|
|
|
if (adj < 1.)
|
|
|
|
adj = 1.;
|
|
|
|
if (adj <= 0x7ffffffe) {
|
|
|
|
/* adj = rounding ? ceil(adj) : floor(adj); */
|
|
|
|
y = adj;
|
|
|
|
if (y != adj) {
|
|
|
|
if (!((rounding>>1) ^ dsign))
|
|
|
|
y++;
|
|
|
|
adj = y;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (scale && (y = word0(rv) & Exp_mask) <= 2*P*Exp_msk1)
|
|
|
|
word0(adj) += (2*P+1)*Exp_msk1 - y;
|
|
|
|
#else
|
|
|
|
#ifdef Sudden_Underflow
|
|
|
|
if ((word0(rv) & Exp_mask) <= P*Exp_msk1) {
|
|
|
|
word0(rv) += P*Exp_msk1;
|
|
|
|
adj *= ulp(dval(rv));
|
|
|
|
if (dsign)
|
|
|
|
dval(rv) += adj;
|
|
|
|
else
|
|
|
|
dval(rv) -= adj;
|
|
|
|
word0(rv) -= P*Exp_msk1;
|
|
|
|
goto cont;
|
|
|
|
}
|
|
|
|
#endif /*Sudden_Underflow*/
|
|
|
|
#endif /*Avoid_Underflow*/
|
|
|
|
adj *= ulp(dval(rv));
|
|
|
|
if (dsign)
|
|
|
|
dval(rv) += adj;
|
|
|
|
else
|
|
|
|
dval(rv) -= adj;
|
|
|
|
goto cont;
|
|
|
|
}
|
|
|
|
#endif /*Honor_FLT_ROUNDS*/
|
|
|
|
|
|
|
|
if (i < 0) {
|
|
|
|
/* Error is less than half an ulp -- check for
|
|
|
|
* special case of mantissa a power of two.
|
|
|
|
*/
|
|
|
|
if (dsign || word1(rv) || word0(rv) & Bndry_mask
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
|| (word0(rv) & Exp_mask) <= (2*P+1)*Exp_msk1
|
|
|
|
#else
|
|
|
|
|| (word0(rv) & Exp_mask) <= Exp_msk1
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
) {
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
if (!delta->x[0] && delta->wds <= 1)
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (!delta->x[0] && delta->wds <= 1) {
|
|
|
|
/* exact result */
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
delta = lshift(delta,Log2P);
|
|
|
|
if (cmp(delta, bs) > 0)
|
|
|
|
goto drop_down;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == 0) {
|
|
|
|
/* exactly half-way between */
|
|
|
|
if (dsign) {
|
|
|
|
if ((word0(rv) & Bndry_mask1) == Bndry_mask1
|
|
|
|
&& word1(rv) == (
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
(scale && (y = word0(rv) & Exp_mask) <= 2*P*Exp_msk1)
|
|
|
|
? (0xffffffff & (0xffffffff << (2*P+1-(y>>Exp_shift)))) :
|
|
|
|
#endif
|
|
|
|
0xffffffff)) {
|
|
|
|
/*boundary case -- increment exponent*/
|
|
|
|
word0(rv) = (word0(rv) & Exp_mask)
|
|
|
|
+ Exp_msk1
|
|
|
|
#ifdef IBM
|
|
|
|
| Exp_msk1 >> 4
|
|
|
|
#endif
|
|
|
|
;
|
|
|
|
word1(rv) = 0;
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
dsign = 0;
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (!(word0(rv) & Bndry_mask) && !word1(rv)) {
|
|
|
|
drop_down:
|
|
|
|
/* boundary case -- decrement exponent */
|
|
|
|
#ifdef Sudden_Underflow /*{{*/
|
|
|
|
L = word0(rv) & Exp_mask;
|
|
|
|
#ifdef IBM
|
|
|
|
if (L < Exp_msk1)
|
|
|
|
#else
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (L <= (scale ? (2*P+1)*Exp_msk1 : Exp_msk1))
|
|
|
|
#else
|
|
|
|
if (L <= Exp_msk1)
|
|
|
|
#endif /*Avoid_Underflow*/
|
|
|
|
#endif /*IBM*/
|
|
|
|
goto undfl;
|
|
|
|
L -= Exp_msk1;
|
|
|
|
#else /*Sudden_Underflow}{*/
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (scale) {
|
|
|
|
L = word0(rv) & Exp_mask;
|
|
|
|
if (L <= (2*P+1)*Exp_msk1) {
|
|
|
|
if (L > (P+2)*Exp_msk1)
|
|
|
|
/* round even ==> */
|
|
|
|
/* accept rv */
|
|
|
|
break;
|
|
|
|
/* rv = smallest denormal */
|
|
|
|
goto undfl;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /*Avoid_Underflow*/
|
|
|
|
L = (word0(rv) & Exp_mask) - Exp_msk1;
|
|
|
|
#endif /*Sudden_Underflow}}*/
|
|
|
|
word0(rv) = L | Bndry_mask1;
|
|
|
|
word1(rv) = 0xffffffff;
|
|
|
|
#ifdef IBM
|
|
|
|
goto cont;
|
|
|
|
#else
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
#ifndef ROUND_BIASED
|
|
|
|
if (!(word1(rv) & LSB))
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
if (dsign)
|
|
|
|
dval(rv) += ulp(dval(rv));
|
|
|
|
#ifndef ROUND_BIASED
|
|
|
|
else {
|
|
|
|
dval(rv) -= ulp(dval(rv));
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
if (!dval(rv))
|
|
|
|
goto undfl;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
dsign = 1 - dsign;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if ((aadj = ratio(delta, bs)) <= 2.) {
|
|
|
|
if (dsign)
|
|
|
|
aadj = aadj1 = 1.;
|
|
|
|
else if (word1(rv) || word0(rv) & Bndry_mask) {
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
if (word1(rv) == Tiny1 && !word0(rv))
|
|
|
|
goto undfl;
|
|
|
|
#endif
|
|
|
|
aadj = 1.;
|
|
|
|
aadj1 = -1.;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
/* special case -- power of FLT_RADIX to be */
|
|
|
|
/* rounded down... */
|
|
|
|
|
|
|
|
if (aadj < 2./FLT_RADIX)
|
|
|
|
aadj = 1./FLT_RADIX;
|
|
|
|
else
|
|
|
|
aadj *= 0.5;
|
|
|
|
aadj1 = -aadj;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
aadj *= 0.5;
|
|
|
|
aadj1 = dsign ? aadj : -aadj;
|
|
|
|
#ifdef Check_FLT_ROUNDS
|
|
|
|
switch (Rounding) {
|
|
|
|
case 2: /* towards +infinity */
|
|
|
|
aadj1 -= 0.5;
|
|
|
|
break;
|
|
|
|
case 0: /* towards 0 */
|
|
|
|
case 3: /* towards -infinity */
|
|
|
|
aadj1 += 0.5;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
if (Flt_Rounds == 0)
|
|
|
|
aadj1 += 0.5;
|
|
|
|
#endif /*Check_FLT_ROUNDS*/
|
|
|
|
}
|
|
|
|
y = word0(rv) & Exp_mask;
|
|
|
|
|
|
|
|
/* Check for overflow */
|
|
|
|
|
|
|
|
if (y == Exp_msk1*(DBL_MAX_EXP+Bias-1)) {
|
|
|
|
dval(rv0) = dval(rv);
|
|
|
|
word0(rv) -= P*Exp_msk1;
|
|
|
|
adj = aadj1 * ulp(dval(rv));
|
|
|
|
dval(rv) += adj;
|
|
|
|
if ((word0(rv) & Exp_mask) >=
|
|
|
|
Exp_msk1*(DBL_MAX_EXP+Bias-P)) {
|
|
|
|
if (word0(rv0) == Big0 && word1(rv0) == Big1)
|
|
|
|
goto ovfl;
|
|
|
|
word0(rv) = Big0;
|
|
|
|
word1(rv) = Big1;
|
|
|
|
goto cont;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
word0(rv) += P*Exp_msk1;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (scale && y <= 2*P*Exp_msk1) {
|
|
|
|
if (aadj <= 0x7fffffff) {
|
|
|
|
if ((z = aadj) <= 0)
|
|
|
|
z = 1;
|
|
|
|
aadj = z;
|
|
|
|
aadj1 = dsign ? aadj : -aadj;
|
|
|
|
}
|
|
|
|
word0(aadj1) += (2*P+1)*Exp_msk1 - y;
|
|
|
|
}
|
|
|
|
adj = aadj1 * ulp(dval(rv));
|
|
|
|
dval(rv) += adj;
|
|
|
|
#else
|
|
|
|
#ifdef Sudden_Underflow
|
|
|
|
if ((word0(rv) & Exp_mask) <= P*Exp_msk1) {
|
|
|
|
dval(rv0) = dval(rv);
|
|
|
|
word0(rv) += P*Exp_msk1;
|
|
|
|
adj = aadj1 * ulp(dval(rv));
|
|
|
|
dval(rv) += adj;
|
|
|
|
#ifdef IBM
|
|
|
|
if ((word0(rv) & Exp_mask) < P*Exp_msk1)
|
|
|
|
#else
|
|
|
|
if ((word0(rv) & Exp_mask) <= P*Exp_msk1)
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
if (word0(rv0) == Tiny0 && word1(rv0) == Tiny1)
|
|
|
|
goto undfl;
|
|
|
|
word0(rv) = Tiny0;
|
|
|
|
word1(rv) = Tiny1;
|
|
|
|
goto cont;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
word0(rv) -= P*Exp_msk1;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
adj = aadj1 * ulp(dval(rv));
|
|
|
|
dval(rv) += adj;
|
|
|
|
}
|
|
|
|
#else /*Sudden_Underflow*/
|
|
|
|
/* Compute adj so that the IEEE rounding rules will
|
|
|
|
* correctly round rv + adj in some half-way cases.
|
|
|
|
* If rv * ulp(rv) is denormalized (i.e.,
|
|
|
|
* y <= (P-1)*Exp_msk1), we must adjust aadj to avoid
|
|
|
|
* trouble from bits lost to denormalization;
|
|
|
|
* example: 1.2e-307 .
|
|
|
|
*/
|
|
|
|
if (y <= (P-1)*Exp_msk1 && aadj > 1.) {
|
|
|
|
aadj1 = (double)(int)(aadj + 0.5);
|
|
|
|
if (!dsign)
|
|
|
|
aadj1 = -aadj1;
|
|
|
|
}
|
|
|
|
adj = aadj1 * ulp(dval(rv));
|
|
|
|
dval(rv) += adj;
|
|
|
|
#endif /*Sudden_Underflow*/
|
|
|
|
#endif /*Avoid_Underflow*/
|
|
|
|
}
|
|
|
|
z = word0(rv) & Exp_mask;
|
|
|
|
#ifndef SET_INEXACT
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (!scale)
|
|
|
|
#endif
|
|
|
|
if (y == z) {
|
|
|
|
/* Can we stop now? */
|
|
|
|
L = (Long)aadj;
|
|
|
|
aadj -= L;
|
|
|
|
/* The tolerances below are conservative. */
|
|
|
|
if (dsign || word1(rv) || word0(rv) & Bndry_mask) {
|
|
|
|
if (aadj < .4999999 || aadj > .5000001)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else if (aadj < .4999999/FLT_RADIX)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
cont:
|
|
|
|
Bfree(bb);
|
|
|
|
Bfree(bd);
|
|
|
|
Bfree(bs);
|
|
|
|
Bfree(delta);
|
|
|
|
}
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
if (inexact) {
|
|
|
|
if (!oldinexact) {
|
|
|
|
word0(rv0) = Exp_1 + (70 << Exp_shift);
|
|
|
|
word1(rv0) = 0;
|
|
|
|
dval(rv0) += 1.;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (!oldinexact)
|
|
|
|
clear_inexact();
|
|
|
|
#endif
|
|
|
|
#ifdef Avoid_Underflow
|
|
|
|
if (scale) {
|
|
|
|
word0(rv0) = Exp_1 - 2*P*Exp_msk1;
|
|
|
|
word1(rv0) = 0;
|
|
|
|
dval(rv) *= dval(rv0);
|
|
|
|
#ifndef NO_ERRNO
|
|
|
|
/* try to avoid the bug of testing an 8087 register value */
|
|
|
|
if (word0(rv) == 0 && word1(rv) == 0)
|
|
|
|
errno = ERANGE;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
#endif /* Avoid_Underflow */
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
if (inexact && !(word0(rv) & Exp_mask)) {
|
|
|
|
/* set underflow bit */
|
|
|
|
dval(rv0) = 1e-300;
|
|
|
|
dval(rv0) *= dval(rv0);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
retfree:
|
|
|
|
Bfree(bb);
|
|
|
|
Bfree(bd);
|
|
|
|
Bfree(bs);
|
|
|
|
Bfree(bd0);
|
|
|
|
Bfree(delta);
|
|
|
|
ret:
|
|
|
|
if (se)
|
|
|
|
*se = (char *)s;
|
|
|
|
return sign ? -dval(rv) : dval(rv);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2007-08-22 19:08:09 +04:00
|
|
|
quorem(Bigint *b, Bigint *S)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
int n;
|
|
|
|
ULong *bx, *bxe, q, *sx, *sxe;
|
|
|
|
#ifdef ULLong
|
|
|
|
ULLong borrow, carry, y, ys;
|
|
|
|
#else
|
|
|
|
ULong borrow, carry, y, ys;
|
|
|
|
#ifdef Pack_32
|
|
|
|
ULong si, z, zs;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
n = S->wds;
|
|
|
|
#ifdef DEBUG
|
|
|
|
/*debug*/ if (b->wds > n)
|
|
|
|
/*debug*/ Bug("oversize b in quorem");
|
|
|
|
#endif
|
|
|
|
if (b->wds < n)
|
|
|
|
return 0;
|
|
|
|
sx = S->x;
|
|
|
|
sxe = sx + --n;
|
|
|
|
bx = b->x;
|
|
|
|
bxe = bx + n;
|
|
|
|
q = *bxe / (*sxe + 1); /* ensure q <= true quotient */
|
|
|
|
#ifdef DEBUG
|
|
|
|
/*debug*/ if (q > 9)
|
|
|
|
/*debug*/ Bug("oversized quotient in quorem");
|
|
|
|
#endif
|
|
|
|
if (q) {
|
|
|
|
borrow = 0;
|
|
|
|
carry = 0;
|
|
|
|
do {
|
|
|
|
#ifdef ULLong
|
|
|
|
ys = *sx++ * (ULLong)q + carry;
|
|
|
|
carry = ys >> 32;
|
|
|
|
y = *bx - (ys & FFFFFFFF) - borrow;
|
|
|
|
borrow = y >> 32 & (ULong)1;
|
|
|
|
*bx++ = y & FFFFFFFF;
|
|
|
|
#else
|
|
|
|
#ifdef Pack_32
|
|
|
|
si = *sx++;
|
|
|
|
ys = (si & 0xffff) * q + carry;
|
|
|
|
zs = (si >> 16) * q + (ys >> 16);
|
|
|
|
carry = zs >> 16;
|
|
|
|
y = (*bx & 0xffff) - (ys & 0xffff) - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
z = (*bx >> 16) - (zs & 0xffff) - borrow;
|
|
|
|
borrow = (z & 0x10000) >> 16;
|
|
|
|
Storeinc(bx, z, y);
|
|
|
|
#else
|
|
|
|
ys = *sx++ * q + carry;
|
|
|
|
carry = ys >> 16;
|
|
|
|
y = *bx - (ys & 0xffff) - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
*bx++ = y & 0xffff;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
} while (sx <= sxe);
|
|
|
|
if (!*bxe) {
|
|
|
|
bx = b->x;
|
|
|
|
while (--bxe > bx && !*bxe)
|
|
|
|
--n;
|
|
|
|
b->wds = n;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (cmp(b, S) >= 0) {
|
|
|
|
q++;
|
|
|
|
borrow = 0;
|
|
|
|
carry = 0;
|
|
|
|
bx = b->x;
|
|
|
|
sx = S->x;
|
|
|
|
do {
|
|
|
|
#ifdef ULLong
|
|
|
|
ys = *sx++ + carry;
|
|
|
|
carry = ys >> 32;
|
|
|
|
y = *bx - (ys & FFFFFFFF) - borrow;
|
|
|
|
borrow = y >> 32 & (ULong)1;
|
|
|
|
*bx++ = y & FFFFFFFF;
|
|
|
|
#else
|
|
|
|
#ifdef Pack_32
|
|
|
|
si = *sx++;
|
|
|
|
ys = (si & 0xffff) + carry;
|
|
|
|
zs = (si >> 16) + (ys >> 16);
|
|
|
|
carry = zs >> 16;
|
|
|
|
y = (*bx & 0xffff) - (ys & 0xffff) - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
z = (*bx >> 16) - (zs & 0xffff) - borrow;
|
|
|
|
borrow = (z & 0x10000) >> 16;
|
|
|
|
Storeinc(bx, z, y);
|
|
|
|
#else
|
|
|
|
ys = *sx++ + carry;
|
|
|
|
carry = ys >> 16;
|
|
|
|
y = *bx - (ys & 0xffff) - borrow;
|
|
|
|
borrow = (y & 0x10000) >> 16;
|
|
|
|
*bx++ = y & 0xffff;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
} while (sx <= sxe);
|
|
|
|
bx = b->x;
|
|
|
|
bxe = bx + n;
|
|
|
|
if (!*bxe) {
|
|
|
|
while (--bxe > bx && !*bxe)
|
|
|
|
--n;
|
|
|
|
b->wds = n;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return q;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef MULTIPLE_THREADS
|
|
|
|
static char *dtoa_result;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static char *
|
|
|
|
rv_alloc(int i)
|
|
|
|
{
|
|
|
|
int j, k, *r;
|
|
|
|
|
|
|
|
j = sizeof(ULong);
|
|
|
|
for (k = 0;
|
|
|
|
sizeof(Bigint) - sizeof(ULong) - sizeof(int) + j <= i;
|
|
|
|
j <<= 1)
|
|
|
|
k++;
|
|
|
|
r = (int*)Balloc(k);
|
|
|
|
*r = k;
|
|
|
|
return
|
|
|
|
#ifndef MULTIPLE_THREADS
|
|
|
|
dtoa_result =
|
|
|
|
#endif
|
|
|
|
(char *)(r+1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *
|
|
|
|
nrv_alloc(char *s, char **rve, int n)
|
|
|
|
{
|
|
|
|
char *rv, *t;
|
|
|
|
|
|
|
|
t = rv = rv_alloc(n);
|
2007-08-27 10:33:12 +04:00
|
|
|
while ((*t = *s++) != 0) t++;
|
2007-08-22 00:57:48 +04:00
|
|
|
if (rve)
|
|
|
|
*rve = t;
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* freedtoa(s) must be used to free values s returned by dtoa
|
|
|
|
* when MULTIPLE_THREADS is #defined. It should be used in all cases,
|
|
|
|
* but for consistency with earlier versions of dtoa, it is optional
|
|
|
|
* when MULTIPLE_THREADS is not defined.
|
|
|
|
*/
|
|
|
|
|
|
|
|
void
|
|
|
|
freedtoa(char *s)
|
|
|
|
{
|
|
|
|
Bigint *b = (Bigint *)((int *)s - 1);
|
|
|
|
b->maxwds = 1 << (b->k = *(int*)b);
|
|
|
|
Bfree(b);
|
|
|
|
#ifndef MULTIPLE_THREADS
|
|
|
|
if (s == dtoa_result)
|
|
|
|
dtoa_result = 0;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dtoa for IEEE arithmetic (dmg): convert double to ASCII string.
|
|
|
|
*
|
|
|
|
* Inspired by "How to Print Floating-Point Numbers Accurately" by
|
|
|
|
* Guy L. Steele, Jr. and Jon L. White [Proc. ACM SIGPLAN '90, pp. 112-126].
|
|
|
|
*
|
|
|
|
* Modifications:
|
|
|
|
* 1. Rather than iterating, we use a simple numeric overestimate
|
|
|
|
* to determine k = floor(log10(d)). We scale relevant
|
|
|
|
* quantities using O(log2(k)) rather than O(k) multiplications.
|
|
|
|
* 2. For some modes > 2 (corresponding to ecvt and fcvt), we don't
|
|
|
|
* try to generate digits strictly left to right. Instead, we
|
|
|
|
* compute with fewer bits and propagate the carry if necessary
|
|
|
|
* when rounding the final digit up. This is often faster.
|
|
|
|
* 3. Under the assumption that input will be rounded nearest,
|
|
|
|
* mode 0 renders 1e23 as 1e23 rather than 9.999999999999999e22.
|
|
|
|
* That is, we allow equality in stopping tests when the
|
|
|
|
* round-nearest rule will give the same floating-point value
|
|
|
|
* as would satisfaction of the stopping test with strict
|
|
|
|
* inequality.
|
|
|
|
* 4. We remove common factors of powers of 2 from relevant
|
|
|
|
* quantities.
|
|
|
|
* 5. When converting floating-point integers less than 1e16,
|
|
|
|
* we use floating-point arithmetic rather than resorting
|
|
|
|
* to multiple-precision integers.
|
|
|
|
* 6. When asked to produce fewer than 15 digits, we first try
|
|
|
|
* to get by with floating-point arithmetic; we resort to
|
|
|
|
* multiple-precision integer arithmetic only if we cannot
|
|
|
|
* guarantee that the floating-point calculation has given
|
|
|
|
* the correctly rounded result. For k requested digits and
|
|
|
|
* "uniformly" distributed input, the probability is
|
|
|
|
* something like 10^(k-15) that we must resort to the Long
|
|
|
|
* calculation.
|
|
|
|
*/
|
|
|
|
|
|
|
|
char *
|
2007-08-22 19:08:09 +04:00
|
|
|
dtoa(double d, int mode, int ndigits, int *decpt, int *sign, char **rve)
|
2007-08-22 00:57:48 +04:00
|
|
|
{
|
|
|
|
/* Arguments ndigits, decpt, sign are similar to those
|
|
|
|
of ecvt and fcvt; trailing zeros are suppressed from
|
|
|
|
the returned string. If not null, *rve is set to point
|
|
|
|
to the end of the return value. If d is +-Infinity or NaN,
|
|
|
|
then *decpt is set to 9999.
|
|
|
|
|
|
|
|
mode:
|
|
|
|
0 ==> shortest string that yields d when read in
|
|
|
|
and rounded to nearest.
|
|
|
|
1 ==> like 0, but with Steele & White stopping rule;
|
|
|
|
e.g. with IEEE P754 arithmetic , mode 0 gives
|
|
|
|
1e23 whereas mode 1 gives 9.999999999999999e22.
|
|
|
|
2 ==> max(1,ndigits) significant digits. This gives a
|
|
|
|
return value similar to that of ecvt, except
|
|
|
|
that trailing zeros are suppressed.
|
|
|
|
3 ==> through ndigits past the decimal point. This
|
|
|
|
gives a return value similar to that from fcvt,
|
|
|
|
except that trailing zeros are suppressed, and
|
|
|
|
ndigits can be negative.
|
|
|
|
4,5 ==> similar to 2 and 3, respectively, but (in
|
|
|
|
round-nearest mode) with the tests of mode 0 to
|
|
|
|
possibly return a shorter string that rounds to d.
|
|
|
|
With IEEE arithmetic and compilation with
|
|
|
|
-DHonor_FLT_ROUNDS, modes 4 and 5 behave the same
|
|
|
|
as modes 2 and 3 when FLT_ROUNDS != 1.
|
|
|
|
6-9 ==> Debugging modes similar to mode - 4: don't try
|
|
|
|
fast floating-point estimate (if applicable).
|
|
|
|
|
|
|
|
Values of mode other than 0-9 are treated as mode 0.
|
|
|
|
|
|
|
|
Sufficient space is allocated to the return value
|
|
|
|
to hold the suppressed trailing zeros.
|
|
|
|
*/
|
|
|
|
|
|
|
|
int bbits, b2, b5, be, dig, i, ieps, ilim, ilim0, ilim1,
|
|
|
|
j, j1, k, k0, k_check, leftright, m2, m5, s2, s5,
|
|
|
|
spec_case, try_quick;
|
|
|
|
Long L;
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
int denorm;
|
|
|
|
ULong x;
|
|
|
|
#endif
|
|
|
|
Bigint *b, *b1, *delta, *mlo, *mhi, *S;
|
|
|
|
double d2, ds, eps;
|
|
|
|
char *s, *s0;
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
int rounding;
|
|
|
|
#endif
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
int inexact, oldinexact;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef MULTIPLE_THREADS
|
|
|
|
if (dtoa_result) {
|
|
|
|
freedtoa(dtoa_result);
|
|
|
|
dtoa_result = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (word0(d) & Sign_bit) {
|
|
|
|
/* set sign for everything, including 0's and NaNs */
|
|
|
|
*sign = 1;
|
|
|
|
word0(d) &= ~Sign_bit; /* clear sign bit */
|
|
|
|
}
|
|
|
|
else
|
|
|
|
*sign = 0;
|
|
|
|
|
|
|
|
#if defined(IEEE_Arith) + defined(VAX)
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
if ((word0(d) & Exp_mask) == Exp_mask)
|
|
|
|
#else
|
|
|
|
if (word0(d) == 0x8000)
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
/* Infinity or NaN */
|
|
|
|
*decpt = 9999;
|
|
|
|
#ifdef IEEE_Arith
|
|
|
|
if (!word1(d) && !(word0(d) & 0xfffff))
|
|
|
|
return nrv_alloc("Infinity", rve, 8);
|
|
|
|
#endif
|
|
|
|
return nrv_alloc("NaN", rve, 3);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef IBM
|
|
|
|
dval(d) += 0; /* normalize */
|
|
|
|
#endif
|
|
|
|
if (!dval(d)) {
|
|
|
|
*decpt = 1;
|
|
|
|
return nrv_alloc("0", rve, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
try_quick = oldinexact = get_inexact();
|
|
|
|
inexact = 1;
|
|
|
|
#endif
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if ((rounding = Flt_Rounds) >= 2) {
|
|
|
|
if (*sign)
|
|
|
|
rounding = rounding == 2 ? 0 : 2;
|
|
|
|
else
|
|
|
|
if (rounding != 2)
|
|
|
|
rounding = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
b = d2b(dval(d), &be, &bbits);
|
|
|
|
#ifdef Sudden_Underflow
|
|
|
|
i = (int)(word0(d) >> Exp_shift1 & (Exp_mask>>Exp_shift1));
|
|
|
|
#else
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((i = (int)(word0(d) >> Exp_shift1 & (Exp_mask>>Exp_shift1))) != 0) {
|
2007-08-22 00:57:48 +04:00
|
|
|
#endif
|
|
|
|
dval(d2) = dval(d);
|
|
|
|
word0(d2) &= Frac_mask1;
|
|
|
|
word0(d2) |= Exp_11;
|
|
|
|
#ifdef IBM
|
|
|
|
if (j = 11 - hi0bits(word0(d2) & Frac_mask))
|
|
|
|
dval(d2) /= 1 << j;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* log(x) ~=~ log(1.5) + (x-1.5)/1.5
|
|
|
|
* log10(x) = log(x) / log(10)
|
|
|
|
* ~=~ log(1.5)/log(10) + (x-1.5)/(1.5*log(10))
|
|
|
|
* log10(d) = (i-Bias)*log(2)/log(10) + log10(d2)
|
|
|
|
*
|
|
|
|
* This suggests computing an approximation k to log10(d) by
|
|
|
|
*
|
|
|
|
* k = (i - Bias)*0.301029995663981
|
|
|
|
* + ( (d2-1.5)*0.289529654602168 + 0.176091259055681 );
|
|
|
|
*
|
|
|
|
* We want k to be too large rather than too small.
|
|
|
|
* The error in the first-order Taylor series approximation
|
|
|
|
* is in our favor, so we just round up the constant enough
|
|
|
|
* to compensate for any error in the multiplication of
|
|
|
|
* (i - Bias) by 0.301029995663981; since |i - Bias| <= 1077,
|
|
|
|
* and 1077 * 0.30103 * 2^-52 ~=~ 7.2e-14,
|
|
|
|
* adding 1e-13 to the constant term more than suffices.
|
|
|
|
* Hence we adjust the constant term to 0.1760912590558.
|
|
|
|
* (We could get a more accurate k by invoking log10,
|
|
|
|
* but this is probably not worthwhile.)
|
|
|
|
*/
|
|
|
|
|
|
|
|
i -= Bias;
|
|
|
|
#ifdef IBM
|
|
|
|
i <<= 2;
|
|
|
|
i += j;
|
|
|
|
#endif
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
denorm = 0;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
/* d is denormalized */
|
|
|
|
|
|
|
|
i = bbits + be + (Bias + (P-1) - 1);
|
2007-08-27 10:33:12 +04:00
|
|
|
x = i > 32 ? word0(d) << (64 - i) | word1(d) >> (i - 32)
|
|
|
|
: word1(d) << (32 - i);
|
2007-08-22 00:57:48 +04:00
|
|
|
dval(d2) = x;
|
|
|
|
word0(d2) -= 31*Exp_msk1; /* adjust exponent */
|
|
|
|
i -= (Bias + (P-1) - 1) + 1;
|
|
|
|
denorm = 1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
ds = (dval(d2)-1.5)*0.289529654602168 + 0.1760912590558 + i*0.301029995663981;
|
|
|
|
k = (int)ds;
|
|
|
|
if (ds < 0. && ds != k)
|
|
|
|
k--; /* want k = floor(ds) */
|
|
|
|
k_check = 1;
|
|
|
|
if (k >= 0 && k <= Ten_pmax) {
|
|
|
|
if (dval(d) < tens[k])
|
|
|
|
k--;
|
|
|
|
k_check = 0;
|
|
|
|
}
|
|
|
|
j = bbits - i - 1;
|
|
|
|
if (j >= 0) {
|
|
|
|
b2 = 0;
|
|
|
|
s2 = j;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
b2 = -j;
|
|
|
|
s2 = 0;
|
|
|
|
}
|
|
|
|
if (k >= 0) {
|
|
|
|
b5 = 0;
|
|
|
|
s5 = k;
|
|
|
|
s2 += k;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
b2 -= k;
|
|
|
|
b5 = -k;
|
|
|
|
s5 = 0;
|
|
|
|
}
|
|
|
|
if (mode < 0 || mode > 9)
|
|
|
|
mode = 0;
|
|
|
|
|
|
|
|
#ifndef SET_INEXACT
|
|
|
|
#ifdef Check_FLT_ROUNDS
|
|
|
|
try_quick = Rounding == 1;
|
|
|
|
#else
|
|
|
|
try_quick = 1;
|
|
|
|
#endif
|
|
|
|
#endif /*SET_INEXACT*/
|
|
|
|
|
|
|
|
if (mode > 5) {
|
|
|
|
mode -= 4;
|
|
|
|
try_quick = 0;
|
|
|
|
}
|
|
|
|
leftright = 1;
|
2007-08-27 10:33:12 +04:00
|
|
|
ilim = ilim1 = -1;
|
2007-08-22 00:57:48 +04:00
|
|
|
switch (mode) {
|
|
|
|
case 0:
|
|
|
|
case 1:
|
|
|
|
i = 18;
|
|
|
|
ndigits = 0;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
leftright = 0;
|
|
|
|
/* no break */
|
|
|
|
case 4:
|
|
|
|
if (ndigits <= 0)
|
|
|
|
ndigits = 1;
|
|
|
|
ilim = ilim1 = i = ndigits;
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
leftright = 0;
|
|
|
|
/* no break */
|
|
|
|
case 5:
|
|
|
|
i = ndigits + k + 1;
|
|
|
|
ilim = i;
|
|
|
|
ilim1 = i - 1;
|
|
|
|
if (i <= 0)
|
|
|
|
i = 1;
|
|
|
|
}
|
|
|
|
s = s0 = rv_alloc(i);
|
|
|
|
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if (mode > 1 && rounding != 1)
|
|
|
|
leftright = 0;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (ilim >= 0 && ilim <= Quick_max && try_quick) {
|
|
|
|
|
|
|
|
/* Try to get by with floating-point arithmetic. */
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
dval(d2) = dval(d);
|
|
|
|
k0 = k;
|
|
|
|
ilim0 = ilim;
|
|
|
|
ieps = 2; /* conservative */
|
|
|
|
if (k > 0) {
|
|
|
|
ds = tens[k&0xf];
|
|
|
|
j = k >> 4;
|
|
|
|
if (j & Bletch) {
|
|
|
|
/* prevent overflows */
|
|
|
|
j &= Bletch - 1;
|
|
|
|
dval(d) /= bigtens[n_bigtens-1];
|
|
|
|
ieps++;
|
|
|
|
}
|
|
|
|
for (; j; j >>= 1, i++)
|
|
|
|
if (j & 1) {
|
|
|
|
ieps++;
|
|
|
|
ds *= bigtens[i];
|
|
|
|
}
|
|
|
|
dval(d) /= ds;
|
|
|
|
}
|
2007-08-27 10:33:12 +04:00
|
|
|
else if ((j1 = -k) != 0) {
|
2007-08-22 00:57:48 +04:00
|
|
|
dval(d) *= tens[j1 & 0xf];
|
|
|
|
for (j = j1 >> 4; j; j >>= 1, i++)
|
|
|
|
if (j & 1) {
|
|
|
|
ieps++;
|
|
|
|
dval(d) *= bigtens[i];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (k_check && dval(d) < 1. && ilim > 0) {
|
|
|
|
if (ilim1 <= 0)
|
|
|
|
goto fast_failed;
|
|
|
|
ilim = ilim1;
|
|
|
|
k--;
|
|
|
|
dval(d) *= 10.;
|
|
|
|
ieps++;
|
|
|
|
}
|
|
|
|
dval(eps) = ieps*dval(d) + 7.;
|
|
|
|
word0(eps) -= (P-1)*Exp_msk1;
|
|
|
|
if (ilim == 0) {
|
|
|
|
S = mhi = 0;
|
|
|
|
dval(d) -= 5.;
|
|
|
|
if (dval(d) > dval(eps))
|
|
|
|
goto one_digit;
|
|
|
|
if (dval(d) < -dval(eps))
|
|
|
|
goto no_digits;
|
|
|
|
goto fast_failed;
|
|
|
|
}
|
|
|
|
#ifndef No_leftright
|
|
|
|
if (leftright) {
|
|
|
|
/* Use Steele & White method of only
|
|
|
|
* generating digits needed.
|
|
|
|
*/
|
|
|
|
dval(eps) = 0.5/tens[ilim-1] - dval(eps);
|
|
|
|
for (i = 0;;) {
|
|
|
|
L = dval(d);
|
|
|
|
dval(d) -= L;
|
|
|
|
*s++ = '0' + (int)L;
|
|
|
|
if (dval(d) < dval(eps))
|
|
|
|
goto ret1;
|
|
|
|
if (1. - dval(d) < dval(eps))
|
|
|
|
goto bump_up;
|
|
|
|
if (++i >= ilim)
|
|
|
|
break;
|
|
|
|
dval(eps) *= 10.;
|
|
|
|
dval(d) *= 10.;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
#endif
|
|
|
|
/* Generate ilim digits, then fix them up. */
|
|
|
|
dval(eps) *= tens[ilim-1];
|
|
|
|
for (i = 1;; i++, dval(d) *= 10.) {
|
|
|
|
L = (Long)(dval(d));
|
|
|
|
if (!(dval(d) -= L))
|
|
|
|
ilim = i;
|
|
|
|
*s++ = '0' + (int)L;
|
|
|
|
if (i == ilim) {
|
|
|
|
if (dval(d) > 0.5 + dval(eps))
|
|
|
|
goto bump_up;
|
|
|
|
else if (dval(d) < 0.5 - dval(eps)) {
|
|
|
|
while (*--s == '0') ;
|
|
|
|
s++;
|
|
|
|
goto ret1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#ifndef No_leftright
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
fast_failed:
|
|
|
|
s = s0;
|
|
|
|
dval(d) = dval(d2);
|
|
|
|
k = k0;
|
|
|
|
ilim = ilim0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Do we have a "small" integer? */
|
|
|
|
|
|
|
|
if (be >= 0 && k <= Int_max) {
|
|
|
|
/* Yes. */
|
|
|
|
ds = tens[k];
|
|
|
|
if (ndigits < 0 && ilim <= 0) {
|
|
|
|
S = mhi = 0;
|
|
|
|
if (ilim < 0 || dval(d) <= 5*ds)
|
|
|
|
goto no_digits;
|
|
|
|
goto one_digit;
|
|
|
|
}
|
|
|
|
for (i = 1;; i++, dval(d) *= 10.) {
|
|
|
|
L = (Long)(dval(d) / ds);
|
|
|
|
dval(d) -= L*ds;
|
|
|
|
#ifdef Check_FLT_ROUNDS
|
|
|
|
/* If FLT_ROUNDS == 2, L will usually be high by 1 */
|
|
|
|
if (dval(d) < 0) {
|
|
|
|
L--;
|
|
|
|
dval(d) += ds;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
*s++ = '0' + (int)L;
|
|
|
|
if (!dval(d)) {
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == ilim) {
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if (mode > 1)
|
|
|
|
switch (rounding) {
|
|
|
|
case 0: goto ret1;
|
|
|
|
case 2: goto bump_up;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
dval(d) += dval(d);
|
2007-08-27 10:33:12 +04:00
|
|
|
if (dval(d) > ds || (dval(d) == ds && (L & 1))) {
|
2007-08-22 00:57:48 +04:00
|
|
|
bump_up:
|
|
|
|
while (*--s == '9')
|
|
|
|
if (s == s0) {
|
|
|
|
k++;
|
|
|
|
*s = '0';
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
++*s++;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
goto ret1;
|
|
|
|
}
|
|
|
|
|
|
|
|
m2 = b2;
|
|
|
|
m5 = b5;
|
|
|
|
mhi = mlo = 0;
|
|
|
|
if (leftright) {
|
|
|
|
i =
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
denorm ? be + (Bias + (P-1) - 1 + 1) :
|
|
|
|
#endif
|
|
|
|
#ifdef IBM
|
|
|
|
1 + 4*P - 3 - bbits + ((bbits + be - 1) & 3);
|
|
|
|
#else
|
|
|
|
1 + P - bbits;
|
|
|
|
#endif
|
|
|
|
b2 += i;
|
|
|
|
s2 += i;
|
|
|
|
mhi = i2b(1);
|
|
|
|
}
|
|
|
|
if (m2 > 0 && s2 > 0) {
|
|
|
|
i = m2 < s2 ? m2 : s2;
|
|
|
|
b2 -= i;
|
|
|
|
m2 -= i;
|
|
|
|
s2 -= i;
|
|
|
|
}
|
|
|
|
if (b5 > 0) {
|
|
|
|
if (leftright) {
|
|
|
|
if (m5 > 0) {
|
|
|
|
mhi = pow5mult(mhi, m5);
|
|
|
|
b1 = mult(mhi, b);
|
|
|
|
Bfree(b);
|
|
|
|
b = b1;
|
|
|
|
}
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((j = b5 - m5) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
b = pow5mult(b, j);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
b = pow5mult(b, b5);
|
|
|
|
}
|
|
|
|
S = i2b(1);
|
|
|
|
if (s5 > 0)
|
|
|
|
S = pow5mult(S, s5);
|
|
|
|
|
|
|
|
/* Check for special case that d is a normalized power of 2. */
|
|
|
|
|
|
|
|
spec_case = 0;
|
|
|
|
if ((mode < 2 || leftright)
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
&& rounding == 1
|
|
|
|
#endif
|
|
|
|
) {
|
|
|
|
if (!word1(d) && !(word0(d) & Bndry_mask)
|
|
|
|
#ifndef Sudden_Underflow
|
|
|
|
&& word0(d) & (Exp_mask & ~Exp_msk1)
|
|
|
|
#endif
|
|
|
|
) {
|
|
|
|
/* The special case */
|
|
|
|
b2 += Log2P;
|
|
|
|
s2 += Log2P;
|
|
|
|
spec_case = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Arrange for convenient computation of quotients:
|
|
|
|
* shift left if necessary so divisor has 4 leading 0 bits.
|
|
|
|
*
|
|
|
|
* Perhaps we should just compute leading 28 bits of S once
|
|
|
|
* and for all and pass them and a shift to quorem, so it
|
|
|
|
* can do shifts and ors to compute the numerator for q.
|
|
|
|
*/
|
|
|
|
#ifdef Pack_32
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((i = ((s5 ? 32 - hi0bits(S->x[S->wds-1]) : 1) + s2) & 0x1f) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
i = 32 - i;
|
|
|
|
#else
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((i = ((s5 ? 32 - hi0bits(S->x[S->wds-1]) : 1) + s2) & 0xf) != 0)
|
2007-08-22 00:57:48 +04:00
|
|
|
i = 16 - i;
|
|
|
|
#endif
|
|
|
|
if (i > 4) {
|
|
|
|
i -= 4;
|
|
|
|
b2 += i;
|
|
|
|
m2 += i;
|
|
|
|
s2 += i;
|
|
|
|
}
|
|
|
|
else if (i < 4) {
|
|
|
|
i += 28;
|
|
|
|
b2 += i;
|
|
|
|
m2 += i;
|
|
|
|
s2 += i;
|
|
|
|
}
|
|
|
|
if (b2 > 0)
|
|
|
|
b = lshift(b, b2);
|
|
|
|
if (s2 > 0)
|
|
|
|
S = lshift(S, s2);
|
|
|
|
if (k_check) {
|
|
|
|
if (cmp(b,S) < 0) {
|
|
|
|
k--;
|
|
|
|
b = multadd(b, 10, 0); /* we botched the k estimate */
|
|
|
|
if (leftright)
|
|
|
|
mhi = multadd(mhi, 10, 0);
|
|
|
|
ilim = ilim1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (ilim <= 0 && (mode == 3 || mode == 5)) {
|
|
|
|
if (ilim < 0 || cmp(b,S = multadd(S,5,0)) <= 0) {
|
|
|
|
/* no digits, fcvt style */
|
|
|
|
no_digits:
|
|
|
|
k = -1 - ndigits;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
one_digit:
|
|
|
|
*s++ = '1';
|
|
|
|
k++;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
if (leftright) {
|
|
|
|
if (m2 > 0)
|
|
|
|
mhi = lshift(mhi, m2);
|
|
|
|
|
|
|
|
/* Compute mlo -- check for special case
|
|
|
|
* that d is a normalized power of 2.
|
|
|
|
*/
|
|
|
|
|
|
|
|
mlo = mhi;
|
|
|
|
if (spec_case) {
|
|
|
|
mhi = Balloc(mhi->k);
|
|
|
|
Bcopy(mhi, mlo);
|
|
|
|
mhi = lshift(mhi, Log2P);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 1;;i++) {
|
|
|
|
dig = quorem(b,S) + '0';
|
|
|
|
/* Do we yet have the shortest decimal string
|
|
|
|
* that will round to d?
|
|
|
|
*/
|
|
|
|
j = cmp(b, mlo);
|
|
|
|
delta = diff(S, mhi);
|
|
|
|
j1 = delta->sign ? 1 : cmp(b, delta);
|
|
|
|
Bfree(delta);
|
|
|
|
#ifndef ROUND_BIASED
|
|
|
|
if (j1 == 0 && mode != 1 && !(word1(d) & 1)
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
&& rounding >= 1
|
|
|
|
#endif
|
|
|
|
) {
|
|
|
|
if (dig == '9')
|
|
|
|
goto round_9_up;
|
|
|
|
if (j > 0)
|
|
|
|
dig++;
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
else if (!b->x[0] && b->wds <= 1)
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
*s++ = dig;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
#endif
|
2007-08-27 10:33:12 +04:00
|
|
|
if (j < 0 || (j == 0 && mode != 1
|
2007-08-22 00:57:48 +04:00
|
|
|
#ifndef ROUND_BIASED
|
|
|
|
&& !(word1(d) & 1)
|
|
|
|
#endif
|
2007-08-27 10:33:12 +04:00
|
|
|
)) {
|
2007-08-22 00:57:48 +04:00
|
|
|
if (!b->x[0] && b->wds <= 1) {
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
goto accept_dig;
|
|
|
|
}
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if (mode > 1)
|
|
|
|
switch (rounding) {
|
|
|
|
case 0: goto accept_dig;
|
|
|
|
case 2: goto keep_dig;
|
|
|
|
}
|
|
|
|
#endif /*Honor_FLT_ROUNDS*/
|
|
|
|
if (j1 > 0) {
|
|
|
|
b = lshift(b, 1);
|
|
|
|
j1 = cmp(b, S);
|
2007-08-27 10:33:12 +04:00
|
|
|
if ((j1 > 0 || (j1 == 0 && (dig & 1))) && dig++ == '9')
|
2007-08-22 00:57:48 +04:00
|
|
|
goto round_9_up;
|
|
|
|
}
|
|
|
|
accept_dig:
|
|
|
|
*s++ = dig;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
if (j1 > 0) {
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
if (!rounding)
|
|
|
|
goto accept_dig;
|
|
|
|
#endif
|
|
|
|
if (dig == '9') { /* possible if i == 1 */
|
|
|
|
round_9_up:
|
|
|
|
*s++ = '9';
|
|
|
|
goto roundoff;
|
|
|
|
}
|
|
|
|
*s++ = dig + 1;
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
keep_dig:
|
|
|
|
#endif
|
|
|
|
*s++ = dig;
|
|
|
|
if (i == ilim)
|
|
|
|
break;
|
|
|
|
b = multadd(b, 10, 0);
|
|
|
|
if (mlo == mhi)
|
|
|
|
mlo = mhi = multadd(mhi, 10, 0);
|
|
|
|
else {
|
|
|
|
mlo = multadd(mlo, 10, 0);
|
|
|
|
mhi = multadd(mhi, 10, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
for (i = 1;; i++) {
|
|
|
|
*s++ = dig = quorem(b,S) + '0';
|
|
|
|
if (!b->x[0] && b->wds <= 1) {
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
inexact = 0;
|
|
|
|
#endif
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
if (i >= ilim)
|
|
|
|
break;
|
|
|
|
b = multadd(b, 10, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Round off last digit */
|
|
|
|
|
|
|
|
#ifdef Honor_FLT_ROUNDS
|
|
|
|
switch (rounding) {
|
|
|
|
case 0: goto trimzeros;
|
|
|
|
case 2: goto roundoff;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
b = lshift(b, 1);
|
|
|
|
j = cmp(b, S);
|
2007-08-27 10:33:12 +04:00
|
|
|
if (j > 0 || (j == 0 && (dig & 1))) {
|
2007-08-22 00:57:48 +04:00
|
|
|
roundoff:
|
|
|
|
while (*--s == '9')
|
|
|
|
if (s == s0) {
|
|
|
|
k++;
|
|
|
|
*s++ = '1';
|
|
|
|
goto ret;
|
|
|
|
}
|
|
|
|
++*s++;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
while (*--s == '0') ;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
ret:
|
|
|
|
Bfree(S);
|
|
|
|
if (mhi) {
|
|
|
|
if (mlo && mlo != mhi)
|
|
|
|
Bfree(mlo);
|
|
|
|
Bfree(mhi);
|
|
|
|
}
|
|
|
|
ret1:
|
|
|
|
#ifdef SET_INEXACT
|
|
|
|
if (inexact) {
|
|
|
|
if (!oldinexact) {
|
|
|
|
word0(d) = Exp_1 + (70 << Exp_shift);
|
|
|
|
word1(d) = 0;
|
|
|
|
dval(d) += 1.;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (!oldinexact)
|
|
|
|
clear_inexact();
|
|
|
|
#endif
|
|
|
|
Bfree(b);
|
|
|
|
*s = 0;
|
|
|
|
*decpt = k + 1;
|
|
|
|
if (rve)
|
|
|
|
*rve = s;
|
|
|
|
return s0;
|
|
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
|
|
}
|
|
|
|
#endif
|