Update.
[glibc.git] / sysdeps / libm-ieee754 / s_finitef.c
blobbaafc31aec75f5b697b0a0bfa5f09e4f4ce425d8
1 /* s_finitef.c -- float version of s_finite.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
5 /*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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 * ====================================================
16 #if defined(LIBM_SCCS) && !defined(lint)
17 static char rcsid[] = "$NetBSD: s_finitef.c,v 1.4 1995/05/10 20:47:18 jtc Exp $";
18 #endif
21 * finitef(x) returns 1 is x is finite, else 0;
22 * no branching!
25 #include "math.h"
26 #include "math_private.h"
28 #ifdef __STDC__
29 int __finitef(float x)
30 #else
31 int __finitef(x)
32 float x;
33 #endif
35 int32_t ix;
36 GET_FLOAT_WORD(ix,x);
37 return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31);
39 weak_alias (__finitef, finitef)