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[glibc/history.git] / math / w_coshl.c
blob5f4623a81a67b59accaac6fd6444963f74e93c32
1 /* w_acoshl.c -- long double version of w_acosh.c.
2 * Conversion to long double by Ulrich Drepper,
3 * Cygnus Support, drepper@cygnus.com.
4 */
6 /*
7 * ====================================================
8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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 * ====================================================
17 #if defined(LIBM_SCCS) && !defined(lint)
18 static char rcsid[] = "$NetBSD: $";
19 #endif
22 * wrapper coshl(x)
25 #include <math.h>
26 #include "math_private.h"
28 #ifdef __STDC__
29 long double __coshl(long double x) /* wrapper coshl */
30 #else
31 long double __coshl(x) /* wrapper coshl */
32 long double x;
33 #endif
35 #ifdef _IEEE_LIBM
36 return __ieee754_coshl(x);
37 #else
38 long double z;
39 z = __ieee754_coshl(x);
40 if(_LIB_VERSION == _IEEE_ || __isnanl(x)) return z;
41 if(!__finite(z) && __finite(x)) {
42 return __kernel_standard(x,x,205); /* cosh overflow */
43 } else
44 return z;
45 #endif
47 weak_alias (__coshl, coshl)