Subversion Repositories shark

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 pj 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
#ifndef lint
17
static char rcsid[] = "$\Id: s_finitef.c,v 1.2 1995/05/30 05:49:38 rgrimes Exp $";
18
#endif
19
 
20
/*
21
 * finitef(x) returns 1 is x is finite, else 0;
22
 * no branching!
23
 */
24
 
25
#include "math.h"
26
#include "math_private.h"
27
 
28
#ifdef __STDC__
29
        int finitef(float x)
30
#else
31
        int finitef(x)
32
        float x;
33
#endif
34
{
35
        int32_t ix;
36
        GET_FLOAT_WORD(ix,x);
37
        return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31);
38
}