libcruft-util/maths.cpp

/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Copyright 2010-2014 Danny Robson <danny@nerdcruft.net>
 */

#include "maths.hpp"

#include <type_traits>


///////////////////////////////////////////////////////////////////////////////
template <typename T>
T
cruft::log2up (T v)
{
    return log2 ((v << 1) - 1);
}

template uint32_t cruft::log2up (uint32_t);
template uint64_t cruft::log2up (uint64_t);


///////////////////////////////////////////////////////////////////////////////
// Simple instantiations. Some functions aren't used internally to the library
// so it's easier to instantiate early and check for broken code at library
// build time.

template float  cruft::smoothstep (float,  float,  float);
template double cruft::smoothstep (double, double, double);