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Bug #5469 ยป 20111021-infinity-nan.patch

ngoto (Naohisa Goto), 10/21/2011 01:24 PM

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include/ruby/missing.h (working copy)
RUBY_EXTERN double cbrt(double);
#endif
#if !defined(INFINITY) || !defined(NAN)
union bytestream4_or_float {
unsigned char stream[4];
float float_value;
};
#endif
#ifdef INFINITY
# define HAVE_INFINITY
#else
/** @internal */
RUBY_EXTERN const unsigned char rb_infinity[];
# define INFINITY (*(float *)rb_infinity)
RUBY_EXTERN const union bytestream4_or_float rb_infinity;
# define INFINITY (rb_infinity.float_value)
#endif
#ifdef NAN
# define HAVE_NAN
#else
/** @internal */
RUBY_EXTERN const unsigned char rb_nan[];
# define NAN (*(float *)rb_nan)
RUBY_EXTERN const union bytestream4_or_float rb_nan;
# define NAN (rb_nan.float_value)
#endif
#ifndef isinf
numeric.c (working copy)
#ifdef HAVE_INFINITY
#elif !defined(WORDS_BIGENDIAN) /* BYTE_ORDER == LITTLE_ENDIAN */
const unsigned char rb_infinity[] = "\x00\x00\x80\x7f";
const union bytestream4_or_float rb_infinity = { 0x00, 0x00, 0x80, 0x7f };
#else
const unsigned char rb_infinity[] = "\x7f\x80\x00\x00";
const union bytestream4_or_float rb_infinity = { 0x7f, 0x80, 0x00, 0x00 };
#endif
#ifdef HAVE_NAN
#elif !defined(WORDS_BIGENDIAN) /* BYTE_ORDER == LITTLE_ENDIAN */
const unsigned char rb_nan[] = "\x00\x00\xc0\x7f";
const union bytestream4_or_float rb_nan = { 0x00, 0x00, 0xc0, 0x7f };
#else
const unsigned char rb_nan[] = "\x7f\xc0\x00\x00";
const union bytestream4_or_float rb_nan = { 0x7f, 0xc0, 0x00, 0x00 };
#endif
#ifndef HAVE_ROUND
    (1-1/1)