kolibrios/contrib/sdk/sources/newlib/math/s_infinity.c
Sergey Semyonov (Serge) 754f9336f0 upload sdk
git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-12-15 08:09:20 +00:00

50 lines
929 B
C

/*
* infinity () returns the representation of infinity.
* Added by Cygnus Support.
*/
/*
FUNCTION
<<infinity>>, <<infinityf>>--representation of infinity
INDEX
infinity
INDEX
infinityf
ANSI_SYNOPSIS
#include <math.h>
double infinity(void);
float infinityf(void);
DESCRIPTION
<<infinity>> and <<infinityf>> return the special number IEEE
infinity in double- and single-precision arithmetic
respectively.
PORTABILITY
<<infinity>> and <<infinityf>> are neither standard C nor POSIX. C and
POSIX require macros HUGE_VAL and HUGE_VALF to be defined in math.h, which
Newlib defines to be infinities corresponding to these archaic infinity()
and infinityf() functions in floating-point implementations which do have
infinities.
QUICKREF
infinity - pure
*/
#include "fdlibm.h"
#ifndef _DOUBLE_IS_32BITS
double infinity()
{
double x;
INSERT_WORDS(x,0x7ff00000,0);
return x;
}
#endif /* _DOUBLE_IS_32BITS */