1 /* @(#)w_acosh.c 5.1 93/09/24 */
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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
10 * ====================================================
14 static char rcsid[] = "$FreeBSD$";
22 #include "math_private.h"
25 acosh(double x) /* wrapper acosh */
28 return __ieee754_acosh(x);
31 z = __ieee754_acosh(x);
32 if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
34 return __kernel_standard(x,x,29); /* acosh(x<1) */