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1 /* |
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2 * GStreamer |
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3 * Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org> |
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4 * |
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5 * This library is free software; you can redistribute it and/or |
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6 * modify it under the terms of the GNU Library General Public |
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7 * License as published by the Free Software Foundation; either |
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8 * version 2 of the License, or (at your option) any later version. |
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9 * |
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10 * This library is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 * Library General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU Library General Public |
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16 * License along with this library; if not, write to the |
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17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 * Boston, MA 02111-1307, USA. |
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19 */ |
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20 |
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21 #ifndef __MATH_COMPAT_H__ |
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22 #define __MATH_COMPAT_H__ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include "config.h" |
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26 #endif |
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27 |
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28 #include <glib.h> |
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29 #include <math.h> |
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30 |
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31 #ifndef HAVE_ASINH |
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32 static inline gdouble |
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33 asinh (gdouble x) |
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34 { |
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35 return log(x + sqrt (x * x + 1)); |
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36 } |
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37 #endif |
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38 |
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39 #ifndef HAVE_SINH |
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40 static inline gdouble |
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41 sinh (gdouble x) |
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42 { |
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43 return 0.5 * (exp (x) - exp (-x)); |
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44 } |
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45 #endif |
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46 |
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47 #ifndef HAVE_COSH |
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48 static inline gdouble |
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49 cosh (gdouble x) |
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50 { |
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51 return 0.5 * (exp (x) + exp (-x)); |
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52 } |
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53 #endif |
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54 |
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55 #endif /* __MATH_COMPAT_H__ */ |