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glibc  2.9
w_coshl.c
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00001 /* w_acoshl.c -- long double version of w_acosh.c.
00002  * Conversion to long double by Ulrich Drepper,
00003  * Cygnus Support, drepper@cygnus.com.
00004  */
00005 
00006 /*
00007  * ====================================================
00008  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
00009  *
00010  * Developed at SunPro, a Sun Microsystems, Inc. business.
00011  * Permission to use, copy, modify, and distribute this
00012  * software is freely granted, provided that this notice
00013  * is preserved.
00014  * ====================================================
00015  */
00016 
00017 #if defined(LIBM_SCCS) && !defined(lint)
00018 static char rcsid[] = "$NetBSD: $";
00019 #endif
00020 
00021 /*
00022  * wrapper coshl(x)
00023  */
00024 
00025 #include <math.h>
00026 #include "math_private.h"
00027 
00028 #ifdef __STDC__
00029        long double __coshl(long double x) /* wrapper coshl */
00030 #else
00031        long double __coshl(x)                    /* wrapper coshl */
00032        long double x;
00033 #endif
00034 {
00035 #ifdef _IEEE_LIBM
00036        return __ieee754_coshl(x);
00037 #else
00038        long double z;
00039        z = __ieee754_coshl(x);
00040        if(_LIB_VERSION == _IEEE_ || __isnanl(x)) return z;
00041        if(!__finite(z) && __finite(x)) {
00042                return __kernel_standard(x,x,205); /* cosh overflow */
00043        } else
00044            return z;
00045 #endif
00046 }
00047 weak_alias (__coshl, coshl)