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35 lines
1.4 KiB
C++
35 lines
1.4 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_COMPOST_UTILITY_EQUAL_TEMPERAMENT_HPP
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#define SPROUT_COMPOST_UTILITY_EQUAL_TEMPERAMENT_HPP
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#include <sprout/config.hpp>
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#include <sprout/math/pow.hpp>
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#include <sprout/type_traits/float_promote.hpp>
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namespace sprout {
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namespace compost {
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//
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// equal_temperament_value
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//
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template<typename ArithmeticType1, typename ArithmeticType2>
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SPROUT_CONSTEXPR typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type
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equal_temperament_value(ArithmeticType1 i, ArithmeticType2 div) {
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typedef typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type type;
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using sprout::pow;
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return pow(type(2), type(i) / type(div));
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}
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template<typename ArithmeticType>
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SPROUT_CONSTEXPR typename sprout::float_promote<ArithmeticType, int>::type
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equal_temperament_value(ArithmeticType i) {
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return sprout::compost::equal_temperament_value(i, 12);
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}
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} // namespace compost
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} // namespace sprout
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#endif // #ifndef SPROUT_COMPOST_UTILITY_EQUAL_TEMPERAMENT_HPP
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