support/fdlibm/w_asin.c
author convert-repo
Tue, 31 Dec 2019 04:28:27 +0000
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/* @(#)w_asin.c 1.3 95/01/18 */
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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 SunSoft, 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 asin(x)
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 */
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#include "fdlibm.h"
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#ifdef __STDC__
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	double asin(double x)		/* wrapper asin */
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#else
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	double asin(x)			/* wrapper asin */
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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_asin(x);
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#else
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	double z;
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	z = __ieee754_asin(x);
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	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
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	if(fabs(x)>1.0) {
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	        return __kernel_standard(x,x,2); /* asin(|x|>1) */
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	} else
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	    return z;
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#endif
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}