POK
finitef.c
1 /*
2  * POK header
3  *
4  * The following file is a part of the POK project. Any modification should
5  * made according to the POK licence. You CANNOT use this file or a part of
6  * this file is this part of a file for your own project
7  *
8  * For more information on the POK licence, please see our LICENCE FILE
9  *
10  * Please follow the coding guidelines described in doc/CODING_GUIDELINES
11  *
12  * Copyright (c) 2007-2009 POK team
13  *
14  * Created by julien on Fri Jan 30 14:41:34 2009
15  */
16 
17 /* s_finitef.c -- float version of s_finite.c.
18  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
19  */
20 
21 /*
22  * ====================================================
23  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
24  *
25  * Developed at SunPro, a Sun Microsystems, Inc. business.
26  * Permission to use, copy, modify, and distribute this
27  * software is freely granted, provided that this notice
28  * is preserved.
29  * ====================================================
30  */
31 
32 
33 /*
34  * finitef(x) returns 1 is x is finite, else 0;
35  * no branching!
36  */
37 
38 #ifdef POK_NEEDS_LIBMATH
39 
40 #include <libm.h>
41 #include "math_private.h"
42 
43 int
44 finitef(float x)
45 {
46  int32_t ix;
47  GET_FLOAT_WORD(ix,x);
48  return (int)((uint32_t)((ix&0x7fffffff)-0x7f800000)>>31);
49 }
50 
51 #endif