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/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* finite(x) returns 1 is x is finite, else 0;
* no branching!
*/
#include <features.h>
/* Prevent math.h from defining a colliding inline */
#undef __USE_EXTERN_INLINES
#include "math.h"
#include "math_private.h"
int __finite(double x)
{
u_int32_t hx;
GET_HIGH_WORD(hx, x);
/* Finite numbers have at least one zero bit in exponent. */
/* All other numbers will result in 0xffffffff after OR: */
return (hx | 0x800fffff) != 0xffffffff;
}
libm_hidden_def(__finite)
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