2 * Copyright (c) 2001-2002, David Janssens
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3 * All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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24 * POSSIBILITY OF SUCH DAMAGE.
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33 * Get the minimum of two integers.
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35 * returns a if a < b else b
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37 int int_min(int a, int b);
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40 * Get the maximum of two integers.
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42 * returns a if a > b else b
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44 int int_max(int a, int b);
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47 * Clamp an integer inside an interval.
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49 * return a if (min < a < max)
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50 * return max if (a > max)
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51 * return min if (a < min)
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53 int int_clamp(int a, int min, int max);
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56 * Get absolute value of integer.
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61 * Divide an integer and round upwards.
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65 int int_ceildiv(int a, int b);
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68 * Divide an integer by a power of 2 and round upwards.
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72 LIBJ2K_API int int_ceildivpow2(int a, int b);
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75 * Divide an integer by a power of 2 and round downwards.
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79 LIBJ2K_API int int_floordivpow2(int a, int b);
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82 * Get logarithm of an integer and round downwards.
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86 int int_floorlog2(int a);
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