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/* wf_acos.c -- float version of w_acos.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
/*
* ====================================================
* 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.
* ====================================================
*/
/*
* wrap_acosf(x)
*/
#include "fdlibm.h"
#include <errno.h>
float acosf(float x) /* wrapper acosf */
{
#ifdef _IEEE_LIBM
return __ieee754_acosf(x);
#else
float z;
z = __ieee754_acosf(x);
if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
if(fabsf(x)>1.0f) {
/* acosf(|x|>1) */
errno = EDOM;
return nanf("");
} else
return z;
#endif
}
#ifdef _DOUBLE_IS_32BITS
#ifdef __STDC__
double acos(double x)
#else
double acos(x)
double x;
#endif
{
return (double) acosf((float) x);
}
#endif /* defined(_DOUBLE_IS_32BITS) */