OpenJPEG  1.5.1
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
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11  * modification, are permitted provided that the following conditions
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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.
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31 #ifndef __INT_H
32 #define __INT_H
33 
42 
45 /* ----------------------------------------------------------------------- */
50 static INLINE int int_min(int a, int b) {
51  return a < b ? a : b;
52 }
57 static INLINE int int_max(int a, int b) {
58  return (a > b) ? a : b;
59 }
69 static 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 }
79 static INLINE int int_abs(int a) {
80  return a < 0 ? -a : a;
81 }
86 static INLINE int int_ceildiv(int a, int b) {
87  return (a + b - 1) / b;
88 }
93 static INLINE int int_ceildivpow2(int a, int b) {
94  return (a + (1 << b) - 1) >> b;
95 }
100 static INLINE int int_floordivpow2(int a, int b) {
101  return a >> b;
102 }
107 static 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 /* ----------------------------------------------------------------------- */
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
#define min(a, b)
Computes the minimum between two integers.
Definition: rs.h:102
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_ceildiv(int a, int b)
Divide an integer and round upwards.
Definition: int.h:86
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
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_floorlog2(int a)
Get logarithm of an integer and round downwards.
Definition: int.h:107
static INLINE int int_min(int a, int b)
Get the minimum of two integers.
Definition: int.h:50