source: trunk/sys/libm/w_cosh.c @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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1
2/* @(#)w_cosh.c 5.1 93/09/24 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunPro, a Sun Microsystems, Inc. business.
8 * Permission to use, copy, modify, and distribute this
9 * software is freely granted, provided that this notice
10 * is preserved.
11 * ====================================================
12 */
13
14/*
15 * wrapper cosh(x)
16 */
17
18#include <libm/fdlibm.h>
19
20#ifdef __STDC__
21        double cosh(double x)           /* wrapper cosh */
22#else
23        double cosh(x)                  /* wrapper cosh */
24        double x;
25#endif
26{
27#ifdef _IEEE_LIBM
28        return __ieee754_cosh(x);
29#else
30        double z;
31        z = __ieee754_cosh(x);
32        if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
33        if(fabs(x)>7.10475860073943863426e+02) {       
34                return __kernel_standard(x,x,5); /* cosh overflow */
35        } else
36            return z;
37#endif
38}
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