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
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/* @(#)s_fabs.c 5.1 93/09/24 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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FUNCTION
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<<fabs>>, <<fabsf>>---absolute value (magnitude)
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INDEX
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fabs
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INDEX
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fabsf
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ANSI_SYNOPSIS
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#include <math.h>
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double fabs(double <[x]>);
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float fabsf(float <[x]>);
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TRAD_SYNOPSIS
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#include <math.h>
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double fabs(<[x]>)
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double <[x]>;
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float fabsf(<[x]>)
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float <[x]>;
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DESCRIPTION
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<<fabs>> and <<fabsf>> calculate
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@tex
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$|x|$,
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@end tex
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the absolute value (magnitude) of the argument <[x]>, by direct
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manipulation of the bit representation of <[x]>.
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RETURNS
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The calculated value is returned. No errors are detected.
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PORTABILITY
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<<fabs>> is ANSI.
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<<fabsf>> is an extension.
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*/
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/*
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* fabs(x) returns the absolute value of x.
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*/
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#include "fdlibm.h"
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#ifndef _DOUBLE_IS_32BITS
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#ifdef __STDC__
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double fabs(double x)
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#else
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double fabs(x)
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double x;
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#endif
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{
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uint32_t high;
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GET_HIGH_WORD(high,x);
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SET_HIGH_WORD(x,high&0x7fffffff);
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return x;
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}
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#endif /* _DOUBLE_IS_32BITS */
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