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40 lines
832 B
C
40 lines
832 B
C
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/* @(#)w_acos.c 1.2 95/01/04 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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* wrap_acos(x)
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*/
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#include "fdlibm.h"
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#ifdef __STDC__
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double acos(double x) /* wrapper acos */
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#else
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double acos(x) /* wrapper acos */
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double x;
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#endif
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{
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#ifdef _IEEE_LIBM
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return __ieee754_acos(x);
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#else
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double z;
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z = __ieee754_acos(x);
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if (_LIB_VERSION == _IEEE_ || isnan(x))
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return z;
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if (fabs(x) > 1.0) {
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return __kernel_standard(x, x, 1); /* acos(|x|>1) */
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} else
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return z;
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#endif
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}
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