OpenJPEG 1.5.2
int.h
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1/*
2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#ifndef __INT_H
32#define __INT_H
39
42
45/* ----------------------------------------------------------------------- */
50static INLINE int int_min(int a, int b) {
51 return a < b ? a : b;
52}
53
57static INLINE int int_max(int a, int b) {
58 return (a > b) ? a : b;
59}
60
69static INLINE int int_clamp(int a, int min, int max) {
70 if (a < min)
71 return min;
72 if (a > max)
73 return max;
74 return a;
75}
76
79static INLINE int int_abs(int a) {
80 return a < 0 ? -a : a;
81}
82
86static INLINE int int_ceildiv(int a, int b) {
87 return (a + b - 1) / b;
88}
89
93static INLINE int int_ceildivpow2(int a, int b) {
94 return (a + (1 << b) - 1) >> b;
95}
96
100static INLINE int int_floordivpow2(int a, int b) {
101 return a >> b;
102}
103
107static INLINE int int_floorlog2(int a) {
108 int l;
109 for (l = 0; a > 1; l++) {
110 a >>= 1;
111 }
112 return l;
113}
114/* ----------------------------------------------------------------------- */
116
118
119#endif
static INLINE int int_abs(int a)
Definition int.h:79
static INLINE int int_ceildivpow2(int a, int b)
Divide an integer by a power of 2 and round upwards.
Definition int.h:93
static INLINE int int_min(int a, int b)
Get the minimum of two integers.
Definition int.h:50
static INLINE int int_ceildiv(int a, int b)
Divide an integer and round upwards.
Definition int.h:86
static INLINE int int_floorlog2(int a)
Get logarithm of an integer and round downwards.
Definition int.h:107
static INLINE int int_clamp(int a, int min, int max)
Clamp an integer inside an interval.
Definition int.h:69
static INLINE int int_floordivpow2(int a, int b)
Divide an integer by a power of 2 and round downwards.
Definition int.h:100
static INLINE int int_max(int a, int b)
Get the maximum of two integers.
Definition int.h:57
#define INLINE
Definition opj_includes.h:75
#define min(a, b)
Computes the minimum between two integers.
Definition rs.h:102