OpenSim-Test/OpenSim/Framework/OpenJpeg/int_.cs

/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of the OpenSimulator Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 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.
 */

using System;
using System.Collections.Generic;
using System.Text;

namespace OpenSim.Framework.OpenJpeg
{
    public static class int_
    {
        public static int int_min(int a, int b)
        {
            return a < b ? a : b;
        }
        
        public static int int_max(int a, int b)
        {
            return (a > b) ? a : b;
        }

        public static int int_clamp(int a, int min, int max)
        {
            if (a < min)
                return min;
            if (a > max)
                return max;

            return a;
        }

        public static int int_abs(int a)
        {
            return a < 0 ? -a : a;
        }

        public static int int_ceildiv(int a, int b)
        {
            return (a + b - 1) / b;
        }

        public static int int_ceildivpow2(int a, int b)
        {
            return (a + (1 << b) - 1) >> b;
        }

        public static int int_floordivpow2(int a, int b)
        {
            return a >> b;
        }

        public static int int_floorlog2(int a)
        {
            for (int l=0; a > 1; l++)
                a >>= 1;

            return 1;
        }
    }
}