зеркало из https://github.com/github/ruby.git
98 строки
2.4 KiB
C
98 строки
2.4 KiB
C
%# -*- 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
|
|
#ifndef ULLONG_MAX
|
|
#define ULLONG_MAX ((unsigned LONG_LONG)LLONG_MAX*2+1)
|
|
#endif
|
|
#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
|
|
OBJ_FREEZE(h);
|
|
}
|