corrade-vassal – Blame information for rev 1
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1 | vero | 1 | /* |
2 | * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
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3 | * Copyright (c) 2002-2007, Professor Benoit Macq |
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4 | * Copyright (c) 2001-2003, David Janssens |
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5 | * Copyright (c) 2002-2003, Yannick Verschueren |
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6 | * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
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7 | * Copyright (c) 2005, Herve Drolon, FreeImage Team |
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8 | * All rights reserved. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
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20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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29 | * POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | #ifndef __FIX_H |
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32 | #define __FIX_H |
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33 | |||
34 | #if defined(_MSC_VER) || defined(__BORLANDC__) |
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35 | #define int64 __int64 |
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36 | #else |
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37 | #define int64 long long |
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38 | #endif |
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39 | |||
40 | /** |
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41 | @file fix.h |
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42 | @brief Implementation of operations of specific multiplication (FIX) |
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43 | |||
44 | The functions in FIX.H have for goal to realize specific multiplication. |
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45 | */ |
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46 | |||
47 | /** @defgroup FIX FIX - Implementation of operations of specific multiplication */ |
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48 | /*@{*/ |
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49 | |||
50 | /** |
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51 | Multiply two fixed-precision rational numbers. |
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52 | @param a |
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53 | @param b |
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54 | @return Returns a * b |
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55 | */ |
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56 | static INLINE int fix_mul(int a, int b) { |
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57 | int64 temp = (int64) a * (int64) b ; |
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58 | temp += temp & 4096; |
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59 | return (int) (temp >> 13) ; |
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60 | } |
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61 | |||
62 | /*@}*/ |
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63 | |||
64 | #endif /* __FIX_H */ |