ratio_less.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_RATIO_LESS_HPP
#define TETL_RATIO_LESS_HPP
 
#include <etl/_ratio/ratio.hpp>
#include <etl/_type_traits/bool_constant.hpp>
 
namespace etl {
 
/// \brief Compares two ratio objects for equality at compile-time. If the ratio
/// R1 is less than the ratio R2, provides the member constant value equal true.
/// Otherwise, value is false.
/// \ingroup ratio
template <typename R1, typename R2>
struct ratio_less : bool_constant<(R1::num * R2::den < R2::num * R1::den)> { };
 
/// \ingroup ratio
template <typename R1, typename R2>
inline constexpr bool ratio_less_v = ratio_less<R1, R2>::value;
 
} // namespace etl
 
#endif // TETL_RATIO_LESS_HPP