magnum/src/Math/Functions.cpp

/*
    Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>

    This file is part of Magnum.

    Magnum is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License version 3
    only, as published by the Free Software Foundation.

    Magnum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Lesser General Public License version 3 for more details.
*/

#include "Functions.h"

namespace Magnum { namespace Math {

std::uint32_t log2(std::uint32_t number) {
    std::uint32_t log = 0;
    while(number >>= 1)
        ++log;
    return log;
}

std::uint32_t log(std::uint32_t base, std::uint32_t number) {
    std::uint32_t log = 0;
    while(number /= base)
        ++log;
    return log;
}

}}