mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-19 18:40:06 +08:00
0d16618c58
Fri May 28 22:20:03 1999 Anthony Green <green@cygnus.com> * java/lang/fdlibm.h: Don't use __uint32_t. Include mprec.h. * java/lang/e_log.c: Don't use __uint32_t. 1999-05-27 Eric Christopher <echristo@cygnus.com> * configure: Rebuilt * configure.in: Fixed ISO C9X and namespace collision with __uint32_t * acconfig.h: Rebuilt * include/config.h.in: Rebuilt * java/lang/mprec.h, java/lang/e_acos.c, java/lang/e_asin.c, java/lang/e_atan2.c, java/lang/e_exp.c, java/lang/e_fmod.c, e_log.c, java/lang/e_pow.c, java/lang/e_rem_pio2.c, java/lang/e_remainder.c, java/lang/e_sqrt.c, java/lang/fdlibm.h, k_tan.c, java/lang/mprec.h, java/lang/s_atan.c, java/lang/s_ceil.c, java/lang/s_copysign.c, java/lang/s_fabs.c, s_floor.c, java/lang/s_rint.c, java/lang/sf_rint.c: Fixed ISO C9X and namespace collision with __uint32_t From-SVN: r27729
74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
|
|
/* @(#)s_fabs.c 5.1 93/09/24 */
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<fabs>>, <<fabsf>>---absolute value (magnitude)
|
|
INDEX
|
|
fabs
|
|
INDEX
|
|
fabsf
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <math.h>
|
|
double fabs(double <[x]>);
|
|
float fabsf(float <[x]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <math.h>
|
|
double fabs(<[x]>)
|
|
double <[x]>;
|
|
|
|
float fabsf(<[x]>)
|
|
float <[x]>;
|
|
|
|
DESCRIPTION
|
|
<<fabs>> and <<fabsf>> calculate
|
|
@tex
|
|
$|x|$,
|
|
@end tex
|
|
the absolute value (magnitude) of the argument <[x]>, by direct
|
|
manipulation of the bit representation of <[x]>.
|
|
|
|
RETURNS
|
|
The calculated value is returned. No errors are detected.
|
|
|
|
PORTABILITY
|
|
<<fabs>> is ANSI.
|
|
<<fabsf>> is an extension.
|
|
|
|
*/
|
|
|
|
/*
|
|
* fabs(x) returns the absolute value of x.
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
|
|
#ifndef _DOUBLE_IS_32BITS
|
|
|
|
#ifdef __STDC__
|
|
double fabs(double x)
|
|
#else
|
|
double fabs(x)
|
|
double x;
|
|
#endif
|
|
{
|
|
uint32_t high;
|
|
GET_HIGH_WORD(high,x);
|
|
SET_HIGH_WORD(x,high&0x7fffffff);
|
|
return x;
|
|
}
|
|
|
|
#endif /* _DOUBLE_IS_32BITS */
|