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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
// -*- C++ -*- C math library.
// Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// ISO C++ 14882: 26.5 C library
//
// Note: this is not a conforming implementation.
#ifndef _CPP_CMATH
#define _CPP_CMATH 1
# include_next <math.h>
# include_next <stdlib.h>
#include <bits/c++config.h>
namespace std {
inline long
abs(long __l) { return ::labs(__l); }
inline ldiv_t
div(long __a, long __b) { return ::ldiv(__a, __b); }
// double
inline double
abs(double __x) { return ::fabs(__x); }
double
pow(double, int);
// float
inline float
ceil(float __x) { return ::ceil(static_cast<double>(__x)); }
inline float
floor(float __x) { return ::floor(static_cast<double>(__x)); }
inline float
fmod(float __x, float __y)
{ return ::fmod(static_cast<double>(__x), static_cast<double>(__y)); }
inline float
frexp(float __x, int* __p)
{ return ::frexp(static_cast<double>(__x), __p); }
inline float
ldexp(float __x, int __i)
{ return ::ldexp(static_cast<double>(__x), __i); }
inline float
pow(float __x, float __y)
{ return ::pow(static_cast<double>(__x), static_cast<double>(__y)); }
float
pow(float, int);
#if _GLIBCPP_HAVE_ABSF
inline float
abs(float __x) { return ::absf(__x); }
#else
inline float
abs(float __x) { return ::fabs(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_ACOSF
inline float
acos(float __x) { return ::acosf(__x); }
#else
inline float
acos(float __x) { return ::acos(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_ASINF
inline float
asin(float __x) { return ::asinf(__x); }
#else
inline float
asin(float __x) { return ::asin(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_ATANF
inline float
atan(float __x) { return ::atanf(__x); }
#else
inline float
atan(float __x) { return ::atan(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_ATAN2F
inline float
atan2(float __x, float __y) { return ::atan2f(__x, __y); }
#else
inline float
atan2(float __x, float __y)
{ return ::atan2(static_cast<double>(__x), static_cast<double>(__y)); }
#endif
#if _GLIBCPP_HAVE_TANF
inline float
tan(float __x) { return ::tanf(__x); }
#else
inline float
tan(float __x) { return ::tan(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_SINHF
inline float
sinh(float __x) { return ::sinhf(__x); }
#else
inline float
sinh(float __x) { return ::sinh(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_TANHF
inline float
tanh(float __x) { return ::tanhf(__x); }
#else
inline float
tanh(float __x) { return ::tanh(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_COSHF
inline float
cosh(float __x) { return ::coshf(__x); }
#else
inline float
cosh(float __x) { return ::cosh(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_EXPF
inline float
exp(float __x) { return ::expf(__x); }
#else
inline float
exp(float __x) { return ::exp(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_LOGF
inline float
log(float __x) { return ::logf(__x); }
#else
inline float
log(float __x) { return ::log(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_LOG10F
inline float
log10(float __x) { return ::log10f(__x); }
#else
inline float
log10(float __x) { return ::log10(static_cast<double>(__x)); }
#endif
#if _GLIBCPP_HAVE_MODFF
inline float
modf(float __x, float* __p) { return ::modff(__x, __p); }
#else
inline float
modf(float __x, float* __p)
{
double __tmp;
double __res = ::modf(static_cast<double>(__x), &__tmp);
*__p = static_cast<float> (__tmp);
return __res;
}
#endif
#if GLIBCPP_HAS_BUILTIN_SINF
inline float
sin(float __x) { return __builtin_sinf(__x); }
#elif _GLIBCPP_HAVE_SINF
inline float
sin(float __x) { return ::sinf(__x); }
#else
inline float
sin(float __x) { return ::sin(static_cast<double>(__x)); }
#endif
#if GLIBCPP_HAS_BUILTIN_COSF
inline float
cos(float __x) { return __builtin_cosf(__x); }
#elif _GLIBCPP_HAVE_COSF
inline float
cos(float __x) { return ::cosf(__x); }
#else
inline float
cos(float __x) { return ::cos(static_cast<double>(__x)); }
#endif
#if GLIBCPP_HAS_BUILTIN_FABSF
inline float
fabs(float __x) { return __builtin_fabsf(__x); }
#elif _GLIBCPP_HAVE_FABSF
inline float
fabs(float __x) { return ::fabsf(__x); }
#else
inline float
fabs(float __x) { return ::fabs(static_cast<double>(__x)); }
#endif
#if GLIBCPP_HAS_BUILTIN_SQRTF
inline float
sqrt(float __x) { return __builtin_sqrtf(__x); }
#elif _GLIBCPP_HAVE_SQRTF
inline float
sqrt(float __x) { return ::sqrtf(__x); }
#else
inline float
sqrt(float __x) { return ::fabs(static_cast<double>(__x)); }
#endif
// XXX long double
long double
pow(long double, int);
} // std
#endif // _CPP_CMATH
|
