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35 @brief Implementation of operations on integers (INT)
37 The functions in INT.H have for goal to realize operations on integers.
40 /** @defgroup INT INT - Implementation of operations on integers */
43 /** @name Exported functions (see also openjpeg.h) */
45 /* ----------------------------------------------------------------------- */
47 Get the minimum of two integers
48 @return Returns a if a < b else b
50 static INLINE int int_min(int a, int b) {
54 Get the maximum of two integers
55 @return Returns a if a > b else b
57 static INLINE int int_max(int a, int b) {
58 return (a > b) ? a : b;
61 Clamp an integer inside an interval
64 <li>Returns a if (min < a < max)
65 <li>Returns max if (a > max)
66 <li>Returns min if (a < min)
69 static INLINE int int_clamp(int a, int min, int max) {
77 @return Get absolute value of integer
79 static INLINE int int_abs(int a) {
80 return a < 0 ? -a : a;
83 Divide an integer and round upwards
84 @return Returns a divided by b
86 static INLINE int int_ceildiv(int a, int b) {
87 return (a + b - 1) / b;
90 Divide an integer by a power of 2 and round upwards
91 @return Returns a divided by 2^b
93 static INLINE int int_ceildivpow2(int a, int b) {
94 return (a + (1 << b) - 1) >> b;
97 Divide an integer by a power of 2 and round downwards
98 @return Returns a divided by 2^b
100 static INLINE int int_floordivpow2(int a, int b) {
104 Get logarithm of an integer and round downwards
105 @return Returns log2(a)
107 static INLINE int int_floorlog2(int a) {
109 for (l = 0; a > 1; l++) {
114 /* ----------------------------------------------------------------------- */