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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
/*
* This file is part of LibreOffice published API.
*/
#ifndef INCLUDED_SAL_MATHCONF_H
#define INCLUDED_SAL_MATHCONF_H
#include "osl/endian.h"
#if defined __sun
#include <ieeefp.h>
#endif /* __sun */
#if defined(__cplusplus) && ( defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L )
#include <cmath>
#endif
#if defined(IOS)
#if defined(__cplusplus)
#include <cmath>
#else
#include <math.h>
#endif
#endif
#if defined __cplusplus
extern "C" {
#endif /* __cplusplus */
/* Generally, the C standard guarantees that at program startup, "trapping or
stopping (if supported) is disabled on all [floating-point] exceptions"
(F.7.3/1 of the August 3, 1998 draft of C99), and that during program
execution, "a programmer can safely assume default modes (or be unaware of
them)" (7.6/2, footnote 161 of the August 3, 1998 draft of C99). Reportedly,
on Windows there are printer drivers that switch on exceptions. To avoid
problems, the SAL_MATH_FPEXCEPTIONS_OFF macro can be used to explicitly
switch off exceptions (on Windows).
*/
#if defined(_WIN32)
#define SAL_MATH_FPEXCEPTIONS_OFF() _control87( _MCW_EM, _MCW_EM )
#else /* WNT */
#define SAL_MATH_FPEXCEPTIONS_OFF()
#endif /* WNT */
/* SAL_MATH_FINITE(d): test double d on INFINITY, NaN et al. */
#if !defined __sun && !defined ANDROID \
&& defined(__cplusplus) \
&& ( defined(__GXX_EXPERIMENTAL_CXX0X__) \
|| __cplusplus >= 201103L \
|| defined(IOS) )
#define SAL_MATH_FINITE(d) std::isfinite(d)
#elif defined __APPLE__ && !(defined __i386__ || defined __x86_64__)
#define SAL_MATH_FINITE(d) isfinite(d)
#elif defined( WNT)
#define SAL_MATH_FINITE(d) _finite(d)
#elif defined(ANDROID) || defined LINUX || defined UNX
#define SAL_MATH_FINITE(d) finite(d)
#else /* WNT, LINUX, UNX */
#error "SAL_MATH_FINITE not defined"
#endif /* WNT, LINUX, UNX */
/* This needs to be fixed for non--IEEE-754 platforms: */
#if 1 /* IEEE 754 supported */
#if defined OSL_BIGENDIAN
/* IEEE 754 double structures for BigEndian */
union sal_math_Double
{
struct
{
unsigned sign : 1;
unsigned exponent :11;
unsigned fraction_hi :20;
unsigned fraction_lo :32;
} inf_parts;
struct
{
unsigned sign : 1;
unsigned exponent :11;
unsigned qnan_bit : 1;
unsigned bits :19;
unsigned fraction_lo :32;
} nan_parts;
struct
{
unsigned msw :32;
unsigned lsw :32;
} w32_parts;
struct
{
sal_uInt64 sign : 1;
sal_uInt64 exponent :11;
sal_uInt64 fraction :52;
} parts;
sal_uInt64 intrep;
double value;
};
#elif defined OSL_LITENDIAN
/* IEEE 754 double structures for LittleEndian */
union sal_math_Double
{
struct {
unsigned fraction_lo :32;
unsigned fraction_hi :20;
unsigned exponent :11;
unsigned sign : 1;
} inf_parts;
struct {
unsigned fraction_lo :32;
unsigned bits :19;
unsigned qnan_bit : 1;
unsigned exponent :11;
unsigned sign : 1;
} nan_parts;
struct
{
unsigned lsw :32;
unsigned msw :32;
} w32_parts;
struct
{
sal_uInt64 fraction :52;
sal_uInt64 exponent :11;
sal_uInt64 sign : 1;
} parts;
sal_uInt64 intrep;
double value;
};
#else /* OSL_BIGENDIAN, OSL_LITENDIAN */
#error "neither OSL_BIGENDIAN nor OSL_LITENDIAN"
#endif /* OSL_BIGENDIAN, OSL_LITENDIAN */
#else /* IEEE 754 supported */
#error "don't know how to handle IEEE 754"
#endif /* IEEE 754 supported */
#if defined __cplusplus
}
#endif /* __cplusplus */
#endif /* INCLUDED_SAL_MATHCONF_H */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
