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30 lines
682 B
C
30 lines
682 B
C
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/* @(#)s_finite.c 5.1 93/09/24 */
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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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#include <sys/cdefs.h>
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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 "openlibm.h"
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#include "math_private.h"
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int finite(double x)
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{
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int32_t hx;
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GET_HIGH_WORD(hx,x);
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return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
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}
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