1 /* @(#)w_acos.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: src/lib/msun/src/w_acos.c,v 1.5 1999/08/28 00:06:57 peter Exp $";
22 #include "math_private.h"
26 acos(double x
) /* wrapper acos */
29 return __ieee754_acos(x
);
32 z
= __ieee754_acos(x
);
33 if(_LIB_VERSION
== _IEEE_
|| isnan(x
)) return z
;
35 return __kernel_standard(x
,x
,1); /* acos(|x|>1) */