glibc/math/w_fmodf.c
Ulrich Drepper 7095366d1e * math/w_fmod.c: Also handle x=±Inf as error.
* math/w_fmodf.c: Likewise.
	* math/w_fmodl.c: Likewise.
	* math/libm-test.inc (fmod_test): Add tests for errno after calls for
	x=±Inf or y=0.
2009-04-26 03:43:02 +00:00

49 lines
1.2 KiB
C

/* w_fmodf.c -- float version of w_fmod.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
/*
* ====================================================
* 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.
* ====================================================
*/
#if defined(LIBM_SCCS) && !defined(lint)
static char rcsid[] = "$NetBSD: w_fmodf.c,v 1.3 1995/05/10 20:48:57 jtc Exp $";
#endif
/*
* wrapper fmodf(x,y)
*/
#include <math.h>
#include "math_private.h"
#ifdef __STDC__
float __fmodf(float x, float y) /* wrapper fmodf */
#else
float __fmodf(x,y) /* wrapper fmodf */
float x,y;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_fmodf(x,y);
#else
float z;
z = __ieee754_fmodf(x,y);
if(_LIB_VERSION == _IEEE_ ||__isnanf(y)||__isnanf(x)) return z;
if(__isinff(x)||y==(float)0.0) {
/* fmodf(+-Inf,y) or fmodf(x,0) */
return (float)__kernel_standard((double)x,(double)y,127);
} else
return z;
#endif
}
weak_alias (__fmodf, fmodf)