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Fix remainder (NaN, 0)
[thirdparty/glibc.git] / math / w_remainderl.c
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1/* w_remainderl.c -- long double version of w_remainder.c.
2 * Conversion to long double by Ulrich Drepper,
3 * Cygnus Support, drepper@cygnus.com.
4 */
5
6/*
7 * ====================================================
8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 *
10 * Developed at SunPro, a Sun Microsystems, Inc. business.
11 * Permission to use, copy, modify, and distribute this
12 * software is freely granted, provided that this notice
13 * is preserved.
14 * ====================================================
15 */
16
17#if defined(LIBM_SCCS) && !defined(lint)
18static char rcsid[] = "$NetBSD: $";
19#endif
20
21/*
22 * wrapper remainderl(x,p)
23 */
24
9d13fb24 25#include <math.h>
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26#include "math_private.h"
27
28#ifdef __STDC__
29 long double __remainderl(long double x, long double y)
30 /* wrapper remainderl */
31#else
32 long double __remainderl(x,y) /* wrapper remainder */
33 long double x,y;
34#endif
35{
36#ifdef _IEEE_LIBM
37 return __ieee754_remainderl(x,y);
38#else
39 long double z;
40 z = __ieee754_remainderl(x,y);
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41 if(_LIB_VERSION == _IEEE_ || __isnanl(y) || __isnanl(x)) return z;
42 if(y==0.0 || __isinfl(x))
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43 return __kernel_standard(x,y,228); /* remainder(x,0) */
44 else
45 return z;
46#endif
47}
48weak_alias (__remainderl, remainderl)