/*
* Copyright (c) 2001-2002, David Janssens
* Copyright (c) 2003, Yannick Verschueren
* Copyright (c) 2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/// <summary>
/// Get the minimum of two integers.
/// </summary>
int int_min(int a, int b) {
return a<b?a:b;
}
/// <summary>
/// Get the maximum of two integers.
/// </summary>
int int_max(int a, int b) {
return a>b?a:b;
}
/// <summary>
/// Clamp an integer inside an interval.
/// </summary>
int int_clamp(int a, int min, int max) {
if (a<min) return min;
if (a>max) return max;
return a;
}
/// <summary>
/// Get absolute value of integer.
/// </summary>
int int_abs(int a) {
return a<0?-a:a;
}
/// <summary>
/// Divide an integer and round upwards.
/// </summary>
int int_ceildiv(int a, int b) {
return (a+b-1)/b;
}
/// <summary>
/// Divide an integer by a power of 2 and round upwards.
/// </summary>
int int_ceildivpow2(int a, int b) {
return (a+(1<<b)-1)>>b;
}
/// <summary>
/// Divide an integer by a power of 2 and round downwards.
/// </summary>
int int_floordivpow2(int a, int b) {
return a>>b;
}
/// <summary>
/// Get logarithm of an integer and round downwards.
/// </summary>
int int_floorlog2(int a) {
int l;
for (l=0; a>1; l++) {
a>>=1;
}
return l;
}