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