1/* @(#)w_cosh.c 5.1 93/09/24 */
2/*
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 *
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
9 * is preserved.
10 * ====================================================
11 */
12
13#include <sys/cdefs.h>
14#if defined(LIBM_SCCS) && !defined(lint)
15__RCSID("$NetBSD: w_cosh.c,v 1.9 2002/05/26 22:02:00 wiz Exp $");
16#endif
17
18/*
19 * wrapper cosh(x)
20 */
21
22#include "namespace.h"
23#include "math.h"
24#include "math_private.h"
25
26#ifdef __weak_alias
27__weak_alias(cosh, _cosh)
28#endif
29
30double
31cosh(double x)		/* wrapper cosh */
32{
33#ifdef _IEEE_LIBM
34	return __ieee754_cosh(x);
35#else
36	double z;
37	z = __ieee754_cosh(x);
38	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
39	if(fabs(x)>7.10475860073943863426e+02) {
40	        return __kernel_standard(x,x,5); /* cosh overflow */
41	} else
42	    return z;
43#endif
44}
45