mirror of https://github.com/PrimeDecomp/prime.git
41 lines
892 B
C
41 lines
892 B
C
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/* @(#)w_atan2.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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/*
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* wrapper atan2(y,x)
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*/
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#include "fdlibm.h"
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#ifdef __STDC__
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double atan2(double y, double x) /* wrapper atan2 */
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#else
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double atan2(y, x) /* wrapper atan2 */
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double y, x;
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#endif
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{
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#ifdef _IEEE_LIBM
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return __ieee754_atan2(y, x);
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#else
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double z;
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z = __ieee754_atan2(y, x);
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if (_LIB_VERSION == _IEEE_ || isnan(x) || isnan(y))
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return z;
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if (x == 0.0 && y == 0.0) {
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return __kernel_standard(y, x, 3); /* atan2(+-0,+-0) */
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} else
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return z;
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#endif
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}
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