make FIXNUM_MAX visible from Ruby

Because our tests now have several places where FIXNUM_MAX is needed,
we decided to provide it along with several other constants.

	* template/limits.c.tmpl: new file, defining RbConfig::Limits

	* ext/rbconfig/sizeof/depend (limits.c): rule to generate limits.c

	* test/-ext-/num2int/test_num2int.rb: use RbConfig::Limits

	* bootstraptest/test_insns.rb: ditto.

	* .gitignore: ignore new generated file.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57465 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shyouhei 2017-01-30 10:12:18 +00:00
Родитель f7015c968c
Коммит 8ad7429644
6 изменённых файлов: 122 добавлений и 30 удалений

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@ -10,11 +10,8 @@ begin
rescue LoadError
# OK, just skip
else
bits = 8 * RbConfig::SIZEOF['long']
$LONG_MAX = (1 << (bits - 1)) - 1
$LONG_MIN = -1 * $LONG_MAX - 1
$FIXNUM_MAX = $LONG_MAX >> 1
$FIXNUM_MIN = $LONG_MIN >> 1
$FIXNUM_MAX = RbConfig::Limits["FIXNUM_MAX"]
$FIXNUM_MIN = RbConfig::Limits["FIXNUM_MIN"]
end
fsl = { frozen_string_literal: true } # used later
@ -272,7 +269,7 @@ tests = [
[ 'opt_case_dispatch', %q{ case 1.0 when 1.1 then false else true end }, ],
[ 'opt_plus', %q{ 1 + 1 == 2 }, ],
if defined? $LONG_MAX then
if defined? $FIXNUM_MAX then
[ 'opt_plus', %Q{ #{ $FIXNUM_MAX } + 1 == #{ $FIXNUM_MAX + 1 } }, ]
end,
[ 'opt_plus', %q{ 1.0 + 1.0 == 2.0 }, ],
@ -281,7 +278,7 @@ tests = [
[ 'opt_plus', %q{ ( ['t'] + ['r', ['u', ['e'], ], ] ).join }, ],
[ 'opt_plus', %q{ Time.at(1) + 1 == Time.at(2) }, ],
[ 'opt_minus', %q{ 1 - 1 == 0 }, ],
if defined? $LONG_MAX then
if defined? $FIXNUM_MIN then
[ 'opt_minus', %Q{ #{ $FIXNUM_MIN } - 1 == #{ $FIXNUM_MIN - 1 } }, ]
end,
[ 'opt_minus', %q{ 1.0 - 1.0 == 0.0 }, ],
@ -364,7 +361,7 @@ tests = [
[ 'opt_empty_p', %q{ Queue.new.empty? }, ],
[ 'opt_succ', %q{ 1.succ == 2 }, ],
if defined? $LONG_MAX then
if defined? $FIXNUM_MAX then
[ 'opt_succ',%Q{ #{ $FIXNUM_MAX }.succ == #{ $FIXNUM_MAX + 1 } }, ]
end,
[ 'opt_succ', %q{ '1'.succ == '2' }, ],

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@ -1,3 +1,7 @@
limits.c: $(top_srcdir)/tool/generic_erb.rb $(top_srcdir)/template/limits.c.tmpl
$(Q) $(RUBY) $(top_srcdir)/tool/generic_erb.rb --output=$@ \
$(top_srcdir)/template/limits.c.tmpl \
sizes.c: $(top_srcdir)/tool/generic_erb.rb \
$(top_srcdir)/template/sizes.c.tmpl \
$(top_srcdir)/configure.in \

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@ -1,5 +1,5 @@
# frozen_string_literal: false
$srcs = %w[sizes.c]
$srcs = %w[sizes.c limits.c]
$distcleanfiles.concat($srcs)
have_type('int_least8_t')

93
template/limits.c.tmpl Normal file
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@ -0,0 +1,93 @@
%# -*- c -*-
% limits = %w[
% FIXNUM
% CHAR SCHAR UCHAR WCHAR
% SHRT USHRT
% INT UINT
% LONG ULONG
% LLONG ULLONG
% INT8 UINT8 INT_LEAST8 UINT_LEAST8 INT_FAST8 UINT_FAST8
% INT16 UINT16 INT_LEAST16 UINT_LEAST16 INT_FAST16 UINT_FAST16
% INT32 UINT32 INT_LEAST32 UINT_LEAST32 INT_FAST32 UINT_FAST32
% INT64 UINT64 INT_LEAST64 UINT_LEAST64 INT_FAST64 UINT_FAST64
% INT128 UINT128
% INTMAX UINTMAX
% INTPTR UINTPTR
% SSZIE SIZE
% PTRDIFF
% ]
%
% verbatim_integers = %w[
% FLT_RADIX
% FLT_ROUNDS
% FLT_EVAL_METHOD
% FLT_MANT_DIG DBL_MANT_DIG LDBL_MANT_DIG
% FLT_DIG DBL_DIG LDBL_DIG
% FLT_MIN_EXP DBL_MIN_EXP LDBL_MIN_EXP
% FLT_MIN_10_EXP DBL_MIN_10_EXP LDBL_MIN_10_EXP
% FLT_MAX_EXP DBL_MAX_EXP LDBL_MAX_EXP
% FLT_MAX_10_EXP DBL_MAX_10_EXP LDBL_MAX_10_EXP
% FLT_DECIMAL_DIG DBL_DECIMAL_DIG LDBL_DECIMAL_DIG DECIMAL_DIG
% FLT_HAS_SUBNORM DBL_HAS_SUBNORM LDBL_HAS_SUBNORM
% ]
%
% # Beware; Ruby cannot handle LDBL_MAX.
% verbatim_doubles = %w[
% FLT_MAX DBL_MAX
% FLT_EPSILON DBL_EPSILON
% FLT_MIN DBL_MIN
% FLT_TRUE_MIN DBL_TRUE_MIN
% ]
%
#include <limits.h>
#include "ruby/ruby.h"
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <stdint.h>
#endif
#ifdef HAVE_FLOAT_H
# include <float.h>
#endif
void
Init_limits(void)
{
VALUE h = rb_hash_new();
rb_define_const(rb_define_module("RbConfig"), "Limits", h);
#ifdef HAVE_LONG_LONG
#define MAX2NUM(name) ULL2NUM(name ## _MAX)
#define MIN2NUM(name) LL2NUM(name ## _MIN)
#else
#define MAX2NUM(name) ULONG2NUM(name ## _MAX)
#define MIN2NUM(name) LONG2NUM(name ## _MIN)
#endif
#define DEFINE(k, v) rb_hash_aset(h, rb_str_new_cstr(#k), v)
% limits.each do |type|
#ifdef <%= type %>_MAX
DEFINE(<%= type %>_MAX, MAX2NUM(<%= type %>));
#endif
#ifdef <%= type %>_MIN
DEFINE(<%= type %>_MIN, MIN2NUM(<%= type %>));
#endif
% end
% verbatim_integers.each do |name|
#ifdef <%= name %>
DEFINE(<%= name %>, LONG2NUM(<%= name %>));
#endif
% end
% verbatim_doubles.each do |name|
#ifdef <%= name %>
DEFINE(<%= name %>, DBL2NUM(<%= name %>));
#endif
% end
#undef DEFINE
#undef MIN2NUM
#undef MAX2NUM
}

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@ -28,6 +28,7 @@ conditions = {
void
Init_sizeof(void)
{
extern void Init_limits();
VALUE s = rb_hash_new();
rb_define_const(rb_define_module("RbConfig"), "SIZEOF", s);
@ -48,4 +49,5 @@ Init_sizeof(void)
% end
#undef DEFINE
Init_limits();
}

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@ -2,33 +2,29 @@
require 'test/unit'
require '-test-/num2int'
require '-test-/integer'
require 'rbconfig/sizeof'
class TestNum2int < Test::Unit::TestCase
SHRT_MIN = -32768
SHRT_MAX = 32767
USHRT_MAX = 65535
l = RbConfig::Limits
INT_MIN = -2147483648
INT_MAX = 2147483647
UINT_MAX = 4294967295
SHRT_MIN = l["SHRT_MIN"]
SHRT_MAX = l["SHRT_MAX"]
USHRT_MAX = l["USHRT_MAX"]
case [0].pack('L!').size
when 4
LONG_MAX = 2147483647
LONG_MIN = -2147483648
ULONG_MAX = 4294967295
when 8
LONG_MAX = 9223372036854775807
LONG_MIN = -9223372036854775808
ULONG_MAX = 18446744073709551615
end
INT_MIN = l["INT_MIN"]
INT_MAX = l["INT_MAX"]
UINT_MAX = l["UINT_MAX"]
LLONG_MAX = 9223372036854775807
LLONG_MIN = -9223372036854775808
ULLONG_MAX = 18446744073709551615
LONG_MAX = l["LONG_MAX"]
LONG_MIN = l["LONG_MIN"]
ULONG_MAX = l["ULONG_MAX"]
FIXNUM_MAX = LONG_MAX/2
FIXNUM_MIN = LONG_MIN/2
LLONG_MAX = l["LLONG_MAX"]
LLONG_MIN = l["LLONG_MIN"]
ULLONG_MAX = l["ULLONG_MAX"]
FIXNUM_MAX = l["FIXNUM_MAX"]
FIXNUM_MIN = l["FIXNUM_MIN"]
def fix2big(n)
10000000000000000000000000000.coerce(n)[0]