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File: [cvs.NetBSD.org] / src / lib / libm / src / s_finite.c (download)

Revision 1.12, Tue Nov 12 17:37:43 2013 UTC (11 months, 1 week ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, netbsd-7-base, netbsd-7, HEAD
Changes since 1.11: +2 -2 lines

Typo.

/* @(#)s_finite.c 5.1 93/09/24 */
/*
 * ====================================================
 * 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.
 * ====================================================
 */

#include <sys/cdefs.h>
#if defined(LIBM_SCCS) && !defined(lint)
__RCSID("$NetBSD: s_finite.c,v 1.12 2013/11/12 17:37:43 joerg Exp $");
#endif

/*
 * finite(x) returns 1 if x is finite, else 0;
 * no branching!
 */

#include "math.h"
#include "math_private.h"

int
finite(double x)
{
	int32_t hx;
	GET_HIGH_WORD(hx,x);
	return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
}