Sprout/sprout/numeric/dft/amplitude_spectrum_value.hpp
2012-12-03 21:48:50 +09:00

21 lines
590 B
C++

#ifndef SPROUT_NUMERIC_DFT_AMPLITUDE_SPECTRUM_VALUE_HPP
#define SPROUT_NUMERIC_DFT_AMPLITUDE_SPECTRUM_VALUE_HPP
#include <sprout/config.hpp>
#include <sprout/complex.hpp>
#include <sprout/math/sqrt.hpp>
namespace sprout {
//
// amplitude_spectrum_value
//
template<typename T>
inline SPROUT_CONSTEXPR typename T::value_type
amplitude_spectrum_value(T const& x) {
using sprout::real;
using sprout::imag;
return sprout::sqrt(real(x) * real(x) + imag(x) * imag(x));
}
} // namespace sprout
#endif // #ifndef SPROUT_NUMERIC_DFT_AMPLITUDE_SPECTRUM_VALUE_HPP