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 /*
17 * finitef(x) returns 1 is x is finite, else 0;
18 * no branching!
19 */
20
21 #include "math.h"
22 #include "math_private.h"
23
__finitef(float x)24 int __finitef(float x)
25 {
26 u_int32_t ix;
27
28 GET_FLOAT_WORD(ix, x);
29 /* Finite numbers have at least one zero bit in exponent. */
30 /* All other numbers will result in 0xffffffff after OR: */
31 return (ix | 0x807fffff) != 0xffffffff;
32 }
33 libm_hidden_def(__finitef)
34