libcruft-util/polynomial.hpp

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/*
* This file is part of libgim.
*
* libgim is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* libgim 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_POLYNOMIAL_HPP
#define __UTIL_POLYNOMIAL_HPP
#include <array>
#include <cstdlib>
namespace util {
namespace polynomial {
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// Invalid solutions are represented by NaN. They are guaranteed to
// be at the end of the solution list, so they are safe to skip on the
// first instance.
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template <size_t S>
std::array<float,S>
solve (std::array<float,S+1>);
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template <size_t S>
float
eval (std::array<float,S>, float x);
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}
}
#endif