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/* @(#)w_acos.c 5.1 93/09/24 */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#ifndef lint
static char rcsid
[] = "$\Id: w_acos.c,v 1.2 1995/05/30 05:50:37 rgrimes Exp $";
#endif
/*
* wrap_acos(x)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
double acos(double x
) /* wrapper acos */
#else
double acos(x
) /* wrapper acos */
double x
;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_acos
(x
);
#else
double z
;
z
= __ieee754_acos
(x
);
if(_LIB_VERSION
== _IEEE_
|| isnan
(x
)) return z
;
if(fabs(x
)>1.0) {
return __kernel_standard
(x
,x
,1); /* acos(|x|>1) */
} else
return z
;
#endif
}