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/* @(#)w_acosh.c 1.3 95/01/18 */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunSoft, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*
*/
/*
* wrapper acosh(x)
*/
#include "fdlibm.h"
#ifdef __STDC__
double acosh(double x) /* wrapper acosh */
#else
double acosh(x) /* wrapper acosh */
double x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_acosh(x);
#else
double z;
z = __ieee754_acosh(x);
if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z;
if(x<1.0) {
return __kernel_standard(x,x,29); /* acosh(x<1) */
} else
return z;
#endif
}
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