Sprout/sprout/numeric/dft/phase_spectrum_value.hpp
2019-01-07 17:47:17 +09:00

29 lines
1 KiB
C++

/*=============================================================================
Copyright (c) 2011-2019 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_NUMERIC_DFT_PHASE_SPECTRUM_VALUE_HPP
#define SPROUT_NUMERIC_DFT_PHASE_SPECTRUM_VALUE_HPP
#include <sprout/config.hpp>
#include <sprout/complex.hpp>
#include <sprout/math/atan2.hpp>
#include <sprout/math/llround.hpp>
namespace sprout {
//
// phase_spectrum_value
//
template<typename T>
inline SPROUT_CONSTEXPR typename T::value_type
phase_spectrum_value(T const& x) {
using sprout::real;
using sprout::imag;
return sprout::atan2(sprout::llround(imag(x)), sprout::llround(real(x)));
}
} // namespace sprout
#endif // #ifndef SPROUT_NUMERIC_DFT_PHASE_SPECTRUM_VALUE_HPP