ratio_subtract.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2020 Tobias Hienzsch
 
#ifndef TETL_RATIO_SUBTRACT_HPP
#define TETL_RATIO_SUBTRACT_HPP
 
#include <etl/_ratio/ratio.hpp>
 
namespace etl {
 
/// \brief The alias template ratio_subtract denotes the result of
/// subtracting two exact rational fractions represented by the ratio
/// specializations R1 and R2.
/// \ingroup ratio
template <typename R1, typename R2>
using ratio_subtract = ratio<(R1::num * R2::den) - (R2::num * R1::den), R1::den * R2::den>;
 
} // namespace etl
 
#endif // TETL_RATIO_SUBTRACT_HPP