blob: d80a348112857712c1bd3574348c4061f907c9be (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/*************************************************************************
*
* $Id$
*
* Copyright (C) 2001 Bjorn Reese <breese@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
* CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
*
************************************************************************/
#ifndef TRIO_NAN_H
#define TRIO_NAN_H
#include "triodef.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Return NaN (Not-a-Number).
*/
TRIO_PUBLIC double trio_nan(void);
/*
* Return positive infinity.
*/
TRIO_PUBLIC double trio_pinf(void);
/*
* Return negative infinity.
*/
TRIO_PUBLIC double trio_ninf(void);
/*
* If number is a NaN return non-zero, otherwise return zero.
*/
TRIO_PUBLIC int trio_isnan(double number);
/*
* If number is positive infinity return 1, if number is negative
* infinity return -1, otherwise return 0.
*/
TRIO_PUBLIC int trio_isinf(double number);
#ifdef __cplusplus
}
#endif
#endif /* TRIO_NAN_H */
|
