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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*************************************************************************
*
* $Id: trionan.h,v 1.9 2005/03/27 18:52:45 breese Exp $
*
* 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_TRIONAN_H
#define TRIO_TRIONAN_H
#include "triodef.h"
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(TRIO_PUBLIC_NAN)
# if !defined(TRIO_PUBLIC)
# define TRIO_PUBLIC
# endif
# define TRIO_PUBLIC_NAN TRIO_PUBLIC
#endif
enum {
TRIO_FP_INFINITE,
TRIO_FP_NAN,
TRIO_FP_NORMAL,
TRIO_FP_SUBNORMAL,
TRIO_FP_ZERO
};
/*************************************************************************
* Dependencies
*/
#if defined(TRIO_EMBED_NAN)
/*
* The application that trionan is embedded in must define which functions
* it uses.
*
* The following resolves internal dependencies.
*/
# if defined(TRIO_FUNC_ISNAN) \
|| defined(TRIO_FUNC_ISINF)
# if !defined(TRIO_FUNC_FPCLASSIFY_AND_SIGNBIT)
# define TRIO_FUNC_FPCLASSIFY_AND_SIGNBIT
# endif
# endif
# if defined(TRIO_FUNC_NAN)
# if !defined(TRIO_FUNC_PINF)
# define TRIO_FUNC_PINF
# endif
# endif
# if defined(TRIO_FUNC_NINF)
# if !defined(TRIO_FUNC_PINF)
# define TRIO_FUNC_PINF
# endif
# endif
#else
/*
* When trionan is not embedded all all functions are defined.
*/
# define TRIO_FUNC_NAN
# define TRIO_FUNC_PINF
# define TRIO_FUNC_NINF
# define TRIO_FUNC_NZERO
# define TRIO_FUNC_ISNAN
# define TRIO_FUNC_ISINF
# define TRIO_FUNC_ISFINITE
# define TRIO_FUNC_SIGNBIT
# define TRIO_FUNC_FPCLASSIFY
# define TRIO_FUNC_FPCLASSIFY_AND_SIGNBIT
#endif
/*************************************************************************
* Functions
*/
/*
* Return NaN (Not-a-Number).
*/
#if defined(TRIO_FUNC_NAN)
TRIO_PUBLIC_NAN double
trio_nan
TRIO_PROTO((void));
#endif
/*
* Return positive infinity.
*/
#if defined(TRIO_FUNC_PINF)
TRIO_PUBLIC_NAN double
trio_pinf
TRIO_PROTO((void));
#endif
/*
* Return negative infinity.
*/
#if defined(TRIO_FUNC_NINF)
TRIO_PUBLIC_NAN double
trio_ninf
TRIO_PROTO((void));
#endif
/*
* Return negative zero.
*/
#if defined(TRIO_FUNC_NZERO)
TRIO_PUBLIC_NAN double
trio_nzero
TRIO_PROTO((TRIO_NOARGS));
#endif
/*
* If number is a NaN return non-zero, otherwise return zero.
*/
#if defined(TRIO_FUNC_ISNAN)
TRIO_PUBLIC_NAN int
trio_isnan
TRIO_PROTO((double number));
#endif
/*
* If number is positive infinity return 1, if number is negative
* infinity return -1, otherwise return 0.
*/
#if defined(TRIO_FUNC_ISINF)
TRIO_PUBLIC_NAN int
trio_isinf
TRIO_PROTO((double number));
#endif
/*
* If number is finite return non-zero, otherwise return zero.
*/
#if defined(TRIO_FUNC_ISFINITE)
TRIO_PUBLIC_NAN int
trio_isfinite
TRIO_PROTO((double number));
#endif
#if defined(TRIO_FUNC_SIGNBIT)
TRIO_PUBLIC_NAN int
trio_signbit
TRIO_PROTO((double number));
#endif
#if defined(TRIO_FUNC_FPCLASSIFY)
TRIO_PUBLIC_NAN int
trio_fpclassify
TRIO_PROTO((double number));
#endif
#if defined(TRIO_FUNC_FPCLASSIFY_AND_SIGNBIT)
TRIO_PUBLIC_NAN int
trio_fpclassify_and_signbit
TRIO_PROTO((double number, int *is_negative));
#endif
#ifdef __cplusplus
}
#endif
#endif /* TRIO_TRIONAN_H */
|
