1 /* s_finitef.c -- float version of s_finite.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5 /*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16 #include <sys/cdefs.h>
17 #if defined(LIBM_SCCS) && !defined(lint)
18 __RCSID("$NetBSD: s_finitef.c,v 1.8 2013/11/12 17:37:43 joerg Exp $");
19 #endif
20
21 /*
22 * finitef(x) returns 1 if x is finite, else 0;
23 * no branching!
24 */
25
26 #include "math.h"
27 #include "math_private.h"
28
29 int
finitef(float x)30 finitef(float x)
31 {
32 int32_t ix;
33 GET_FLOAT_WORD(ix,x);
34 return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31);
35 }
36