]>
Commit | Line | Data |
---|---|---|
7d4260a3 BK |
1 | // Stub definitions for float math. |
2 | ||
818ab71a | 3 | // Copyright (C) 2001-2016 Free Software Foundation, Inc. |
7d4260a3 BK |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
7d4260a3 BK |
9 | // any later version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
748086b7 JJ |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
7d4260a3 | 19 | |
748086b7 JJ |
20 | // You should have received a copy of the GNU General Public License and |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
7d4260a3 BK |
24 | |
25 | #include <cmath> | |
26 | ||
27 | // For targets which do not have support for float versions, | |
28 | // we use the following crude approximations. We keep saying that we'll do | |
29 | // better later, but never do. | |
30 | ||
f92ab29f | 31 | extern "C" |
7d4260a3 BK |
32 | { |
33 | #ifndef _GLIBCXX_HAVE_FABSF | |
34 | float | |
35 | fabsf(float x) | |
36 | { | |
37 | return (float) fabs(x); | |
38 | } | |
39 | #endif | |
40 | ||
41 | #ifndef _GLIBCXX_HAVE_ACOSF | |
42 | float | |
43 | acosf(float x) | |
44 | { | |
45 | return (float) acos(x); | |
46 | } | |
47 | #endif | |
48 | ||
49 | #ifndef _GLIBCXX_HAVE_ASINF | |
50 | float | |
51 | asinf(float x) | |
52 | { | |
53 | return (float) asin(x); | |
54 | } | |
55 | #endif | |
56 | ||
57 | #ifndef _GLIBCXX_HAVE_ATANF | |
58 | float | |
59 | atanf(float x) | |
60 | { | |
61 | return (float) atan(x); | |
62 | } | |
63 | #endif | |
64 | ||
65 | #ifndef _GLIBCXX_HAVE_ATAN2F | |
66 | float | |
67 | atan2f(float x, float y) | |
68 | { | |
69 | return (float) atan2(x, y); | |
70 | } | |
71 | #endif | |
72 | ||
73 | #ifndef _GLIBCXX_HAVE_CEILF | |
74 | float | |
75 | ceilf(float x) | |
76 | { | |
77 | return (float) ceil(x); | |
78 | } | |
79 | #endif | |
80 | ||
81 | #ifndef _GLIBCXX_HAVE_COSF | |
82 | float | |
83 | cosf(float x) | |
84 | { | |
85 | return (float) cos(x); | |
86 | } | |
87 | #endif | |
88 | ||
89 | #ifndef _GLIBCXX_HAVE_COSHF | |
90 | float | |
91 | coshf(float x) | |
92 | { | |
93 | return (float) cosh(x); | |
94 | } | |
95 | #endif | |
96 | ||
97 | #ifndef _GLIBCXX_HAVE_EXPF | |
98 | float | |
99 | expf(float x) | |
100 | { | |
101 | return (float) exp(x); | |
102 | } | |
103 | #endif | |
104 | ||
105 | #ifndef _GLIBCXX_HAVE_FLOORF | |
106 | float | |
107 | floorf(float x) | |
108 | { | |
109 | return (float) floor(x); | |
110 | } | |
111 | #endif | |
112 | ||
113 | #ifndef _GLIBCXX_HAVE_FMODF | |
114 | float | |
115 | fmodf(float x, float y) | |
116 | { | |
117 | return (float) fmod(x, y); | |
118 | } | |
119 | #endif | |
120 | ||
121 | #ifndef _GLIBCXX_HAVE_FREXPF | |
122 | float | |
123 | frexpf(float x, int *exp) | |
124 | { | |
125 | return (float) frexp(x, exp); | |
126 | } | |
127 | #endif | |
128 | ||
129 | #ifndef _GLIBCXX_HAVE_SQRTF | |
130 | float | |
131 | sqrtf(float x) | |
132 | { | |
133 | return (float) sqrt(x); | |
134 | } | |
135 | #endif | |
136 | ||
137 | #ifndef _GLIBCXX_HAVE_HYPOTF | |
138 | float | |
139 | hypotf(float x, float y) | |
140 | { | |
141 | float s = fabsf(x) + fabsf(y); | |
142 | if (s == 0.0F) | |
143 | return s; | |
144 | x /= s; y /= s; | |
145 | return s * sqrtf(x * x + y * y); | |
146 | } | |
147 | #endif | |
148 | ||
149 | #ifndef _GLIBCXX_HAVE_LDEXPF | |
150 | float | |
151 | ldexpf(float x, int exp) | |
152 | { | |
153 | return (float) ldexp(x, exp); | |
154 | } | |
155 | #endif | |
156 | ||
157 | #ifndef _GLIBCXX_HAVE_LOGF | |
158 | float | |
159 | logf(float x) | |
160 | { | |
161 | return (float) log(x); | |
162 | } | |
163 | #endif | |
164 | ||
165 | #ifndef _GLIBCXX_HAVE_LOG10F | |
166 | float | |
167 | log10f(float x) | |
168 | { | |
169 | return (float) log10(x); | |
170 | } | |
171 | #endif | |
172 | ||
173 | #ifndef _GLIBCXX_HAVE_MODFF | |
174 | float | |
175 | modff(float x, float *iptr) | |
176 | { | |
177 | double result, temp; | |
178 | ||
179 | result = modf(x, &temp); | |
180 | *iptr = (float) temp; | |
181 | return (float) result; | |
182 | } | |
183 | #endif | |
184 | ||
185 | #ifndef _GLIBCXX_HAVE_POWF | |
186 | float | |
187 | powf(float x, float y) | |
188 | { | |
189 | return (float) pow(x, y); | |
190 | } | |
191 | #endif | |
192 | ||
193 | #ifndef _GLIBCXX_HAVE_SINF | |
194 | float | |
195 | sinf(float x) | |
196 | { | |
197 | return (float) sin(x); | |
198 | } | |
199 | #endif | |
200 | ||
201 | #ifndef _GLIBCXX_HAVE_SINHF | |
202 | float | |
203 | sinhf(float x) | |
204 | { | |
205 | return (float) sinh(x); | |
206 | } | |
207 | #endif | |
208 | ||
209 | #ifndef _GLIBCXX_HAVE_TANF | |
210 | float | |
211 | tanf(float x) | |
212 | { | |
213 | return (float) tan(x); | |
214 | } | |
215 | #endif | |
216 | ||
217 | #ifndef _GLIBCXX_HAVE_TANHF | |
218 | float | |
219 | tanhf(float x) | |
220 | { | |
221 | return (float) tanh(x); | |
222 | } | |
223 | #endif | |
224 | } // extern "C" |