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/* @(#)w_acos.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.
* ====================================================
*/
/*
* wrap_acos(x)
*/
#include "fdlibm.h"
#ifdef __STDC__
double ieee_acos(double x) /* wrapper acos */
#else
double ieee_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_ || ieee_isnan(x)) return z;
if(ieee_fabs(x)>1.0) {
return __kernel_standard(x,x,1); /* ieee_acos(|x|>1) */
} else
return z;
#endif
}