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1 | // Stub definitions for float math. |
2 | ||
3 | // Copyright (C) 2001, 2002, 2003, 2009 Free Software Foundation, Inc. | |
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 | |
8 | // Free Software Foundation; either version 2, or (at your option) | |
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 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING. If not, write to the Free | |
18 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | |
19 | // USA. | |
20 | ||
21 | // As a special exception, you may use this file as part of a free software | |
22 | // library without restriction. Specifically, if other files instantiate | |
23 | // templates or use macros or inline functions from this file, or you compile | |
24 | // this file and link it with other files to produce an executable, this | |
25 | // file does not by itself cause the resulting executable to be covered by | |
26 | // the GNU General Public License. This exception does not however | |
27 | // invalidate any other reasons why the executable file might be covered by | |
28 | // the GNU General Public License. | |
29 | ||
30 | #include <cmath> | |
31 | ||
32 | // For targets which do not have support for float versions, | |
33 | // we use the following crude approximations. We keep saying that we'll do | |
34 | // better later, but never do. | |
35 | ||
36 | extern "C" | |
37 | { | |
38 | #ifndef _GLIBCXX_HAVE_FABSF | |
39 | float | |
40 | fabsf(float x) | |
41 | { | |
42 | return (float) fabs(x); | |
43 | } | |
44 | #endif | |
45 | ||
46 | #ifndef _GLIBCXX_HAVE_ACOSF | |
47 | float | |
48 | acosf(float x) | |
49 | { | |
50 | return (float) acos(x); | |
51 | } | |
52 | #endif | |
53 | ||
54 | #ifndef _GLIBCXX_HAVE_ASINF | |
55 | float | |
56 | asinf(float x) | |
57 | { | |
58 | return (float) asin(x); | |
59 | } | |
60 | #endif | |
61 | ||
62 | #ifndef _GLIBCXX_HAVE_ATANF | |
63 | float | |
64 | atanf(float x) | |
65 | { | |
66 | return (float) atan(x); | |
67 | } | |
68 | #endif | |
69 | ||
70 | #ifndef _GLIBCXX_HAVE_ATAN2F | |
71 | float | |
72 | atan2f(float x, float y) | |
73 | { | |
74 | return (float) atan2(x, y); | |
75 | } | |
76 | #endif | |
77 | ||
78 | #ifndef _GLIBCXX_HAVE_CEILF | |
79 | float | |
80 | ceilf(float x) | |
81 | { | |
82 | return (float) ceil(x); | |
83 | } | |
84 | #endif | |
85 | ||
86 | #ifndef _GLIBCXX_HAVE_COSF | |
87 | float | |
88 | cosf(float x) | |
89 | { | |
90 | return (float) cos(x); | |
91 | } | |
92 | #endif | |
93 | ||
94 | #ifndef _GLIBCXX_HAVE_COSHF | |
95 | float | |
96 | coshf(float x) | |
97 | { | |
98 | return (float) cosh(x); | |
99 | } | |
100 | #endif | |
101 | ||
102 | #ifndef _GLIBCXX_HAVE_EXPF | |
103 | float | |
104 | expf(float x) | |
105 | { | |
106 | return (float) exp(x); | |
107 | } | |
108 | #endif | |
109 | ||
110 | #ifndef _GLIBCXX_HAVE_FLOORF | |
111 | float | |
112 | floorf(float x) | |
113 | { | |
114 | return (float) floor(x); | |
115 | } | |
116 | #endif | |
117 | ||
118 | #ifndef _GLIBCXX_HAVE_FMODF | |
119 | float | |
120 | fmodf(float x, float y) | |
121 | { | |
122 | return (float) fmod(x, y); | |
123 | } | |
124 | #endif | |
125 | ||
126 | #ifndef _GLIBCXX_HAVE_FREXPF | |
127 | float | |
128 | frexpf(float x, int *exp) | |
129 | { | |
130 | return (float) frexp(x, exp); | |
131 | } | |
132 | #endif | |
133 | ||
134 | #ifndef _GLIBCXX_HAVE_SQRTF | |
135 | float | |
136 | sqrtf(float x) | |
137 | { | |
138 | return (float) sqrt(x); | |
139 | } | |
140 | #endif | |
141 | ||
142 | #ifndef _GLIBCXX_HAVE_HYPOTF | |
143 | float | |
144 | hypotf(float x, float y) | |
145 | { | |
146 | float s = fabsf(x) + fabsf(y); | |
147 | if (s == 0.0F) | |
148 | return s; | |
149 | x /= s; y /= s; | |
150 | return s * sqrtf(x * x + y * y); | |
151 | } | |
152 | #endif | |
153 | ||
154 | #ifndef _GLIBCXX_HAVE_LDEXPF | |
155 | float | |
156 | ldexpf(float x, int exp) | |
157 | { | |
158 | return (float) ldexp(x, exp); | |
159 | } | |
160 | #endif | |
161 | ||
162 | #ifndef _GLIBCXX_HAVE_LOGF | |
163 | float | |
164 | logf(float x) | |
165 | { | |
166 | return (float) log(x); | |
167 | } | |
168 | #endif | |
169 | ||
170 | #ifndef _GLIBCXX_HAVE_LOG10F | |
171 | float | |
172 | log10f(float x) | |
173 | { | |
174 | return (float) log10(x); | |
175 | } | |
176 | #endif | |
177 | ||
178 | #ifndef _GLIBCXX_HAVE_MODFF | |
179 | float | |
180 | modff(float x, float *iptr) | |
181 | { | |
182 | double result, temp; | |
183 | ||
184 | result = modf(x, &temp); | |
185 | *iptr = (float) temp; | |
186 | return (float) result; | |
187 | } | |
188 | #endif | |
189 | ||
190 | #ifndef _GLIBCXX_HAVE_POWF | |
191 | float | |
192 | powf(float x, float y) | |
193 | { | |
194 | return (float) pow(x, y); | |
195 | } | |
196 | #endif | |
197 | ||
198 | #ifndef _GLIBCXX_HAVE_SINF | |
199 | float | |
200 | sinf(float x) | |
201 | { | |
202 | return (float) sin(x); | |
203 | } | |
204 | #endif | |
205 | ||
206 | #ifndef _GLIBCXX_HAVE_SINHF | |
207 | float | |
208 | sinhf(float x) | |
209 | { | |
210 | return (float) sinh(x); | |
211 | } | |
212 | #endif | |
213 | ||
214 | #ifndef _GLIBCXX_HAVE_TANF | |
215 | float | |
216 | tanf(float x) | |
217 | { | |
218 | return (float) tan(x); | |
219 | } | |
220 | #endif | |
221 | ||
222 | #ifndef _GLIBCXX_HAVE_TANHF | |
223 | float | |
224 | tanhf(float x) | |
225 | { | |
226 | return (float) tanh(x); | |
227 | } | |
228 | #endif | |
229 | } // extern "C" |