2 * Copyright (c) 2001-2003, David Janssens
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3 * Copyright (c) 2002-2003, Yannick Verschueren
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4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
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5 * Copyright (c) 2005, Hervé Drolon, FreeImage Team
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6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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7 * All rights reserved.
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9 * Redistribution and use in source and binary forms, with or without
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10 * modification, are permitted provided that the following conditions
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12 * 1. Redistributions of source code must retain the above copyright
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13 * notice, this list of conditions and the following disclaimer.
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14 * 2. Redistributions in binary form must reproduce the above copyright
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15 * notice, this list of conditions and the following disclaimer in the
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16 * documentation and/or other materials provided with the distribution.
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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28 * POSSIBILITY OF SUCH DAMAGE.
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34 @brief Implementation of operations on integers (INT)
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36 The functions in INT.C have for goal to realize operations on integers.
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39 /** @defgroup INT INT - Implementation of operations on integers */
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42 /** @name Exported functions (see also openjpeg.h) */
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44 /* ----------------------------------------------------------------------- */
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46 Get the minimum of two integers
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47 @return Returns a if a < b else b
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49 int int_min(int a, int b);
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51 Get the maximum of two integers
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52 @return Returns a if a > b else b
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54 int int_max(int a, int b);
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56 Clamp an integer inside an interval
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59 <li>Returns a if (min < a < max)
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60 <li>Returns max if (a > max)
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61 <li>Returns min if (a < min)
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64 int int_clamp(int a, int min, int max);
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66 @return Get absolute value of integer
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70 Divide an integer and round upwards
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71 @return Returns a divided by b
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73 int int_ceildiv(int a, int b);
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75 Divide an integer by a power of 2 and round upwards
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76 @return Returns a divided by 2^b
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78 int int_ceildivpow2(int a, int b);
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80 Divide an integer by a power of 2 and round downwards
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81 @return Returns a divided by 2^b
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83 int int_floordivpow2(int a, int b);
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85 Get logarithm of an integer and round downwards
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86 @return Returns log2(a)
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88 int int_floorlog2(int a);
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90 /* ----------------------------------------------------------------------- */
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