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41 @brief Implementation of operations on integers (INT)
43 The functions in INT.H have for goal to realize operations on integers.
46 /** @defgroup INT INT - Implementation of operations on integers */
49 /** @name Exported functions (see also openjpeg.h) */
51 /* ----------------------------------------------------------------------- */
53 Get the minimum of two integers
54 @return Returns a if a < b else b
56 static INLINE int int_min(int a, int b) {
60 Get the maximum of two integers
61 @return Returns a if a > b else b
63 static INLINE int int_max(int a, int b) {
64 return (a > b) ? a : b;
67 Clamp an integer inside an interval
70 <li>Returns a if (min < a < max)
71 <li>Returns max if (a > max)
72 <li>Returns min if (a < min)
75 static INLINE int int_clamp(int a, int min, int max) {
83 @return Get absolute value of integer
85 static INLINE int int_abs(int a) {
86 return a < 0 ? -a : a;
89 Divide an integer and round upwards
90 @return Returns a divided by b
92 static INLINE int int_ceildiv(int a, int b) {
93 return (a + b - 1) / b;
96 Divide an integer by a power of 2 and round upwards
97 @return Returns a divided by 2^b
99 static INLINE int int_ceildivpow2(int a, int b) {
100 return (a + (1 << b) - 1) >> b;
103 Divide an integer by a power of 2 and round downwards
104 @return Returns a divided by 2^b
106 static INLINE int int_floordivpow2(int a, int b) {
110 Get logarithm of an integer and round downwards
111 @return Returns log2(a)
113 static INLINE int int_floorlog2(int a) {
115 for (l = 0; a > 1; l++) {
120 /* ----------------------------------------------------------------------- */