1 /* s_finitef.c -- float version of s_finite.c.
2 */
3
4 /*
5 * ====================================================
6 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
7 *
8 * Developed at SunPro, a Sun Microsystems, Inc. business.
9 * Permission to use, copy, modify, and distribute this
10 * software is freely granted, provided that this notice
11 * is preserved.
12 * ====================================================
13 */
14
15 #if defined(LIBM_SCCS) && !defined(lint)
16 static char rcsid[] = "$NetBSD: s_finitef.c,v 1.4 1995/05/10 20:47:18 jtc Exp $";
17 #endif
18
19 /*
20 * finitef(x) returns 1 is x is finite, else 0;
21 * no branching!
22 */
23
24 #include <math.h>
25 #include <math_private.h>
26
27 #undef __finitef
28
29 #ifndef FINITEF
30 # define FINITEF __finitef
31 #endif
32
FINITEF(float x)33 int FINITEF(float x)
34 {
35 int32_t ix;
36 GET_FLOAT_WORD(ix,x);
37 return (int)((uint32_t)((ix&0x7f800000)-0x7f800000)>>31);
38 }
39 hidden_def (__finitef)
40 weak_alias (__finitef, finitef)
41