support/fdlibm/s_finite.c
author convert-repo
Tue, 31 Dec 2019 04:28:27 +0000
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/* @(#)s_finite.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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 * finite(x) returns 1 is x is finite, else 0;
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 * no branching!
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 */
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#include "fdlibm.h"
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#ifdef __STDC__
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	int finite(double x)
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#else
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	int finite(x)
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	double x;
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#endif
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{
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	int hx; 
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	hx = __HI(x);
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	return  (unsigned)((hx&0x7fffffff)-0x7ff00000)>>31;
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}