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add compost dft, spectrum, etc

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bolero-MURAKAMI 2012-12-03 21:48:50 +09:00
parent 6b08a81d3e
commit 24d2a229f3
45 changed files with 1490 additions and 61 deletions
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57
sprout/compost/formats/as_imag.hpp Normal file
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#ifndef SPROUT_COMPOST_FORMATS_AS_IMAG_HPP
#define SPROUT_COMPOST_FORMATS_AS_IMAG_HPP
#include <utility>
#include <sprout/config.hpp>
#include <sprout/complex.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/range/adaptor/transformed.hpp>
namespace sprout {
namespace compost {
//
// to_imag_value
//
struct to_imag_value {
public:
template<typename Complex>
SPROUT_CONSTEXPR decltype(imag(std::declval<Complex const&>())) operator()(Complex const& x) const {
return imag(x);
}
};
namespace formats {
//
// as_imag_forwarder
//
class as_imag_forwarder {};
//
// as_imag
//
namespace {
SPROUT_STATIC_CONSTEXPR sprout::compost::formats::as_imag_forwarder as_imag{};
} // anonymous-namespace
//
// operator|
//
template<typename Range>
inline SPROUT_CONSTEXPR auto
operator|(Range&& lhs, sprout::compost::formats::as_imag_forwarder const& rhs)
-> decltype(
sprout::forward<Range>(lhs)
| sprout::adaptors::transformed(sprout::compost::to_imag_value())
)
{
return sprout::forward<Range>(lhs)
| sprout::adaptors::transformed(sprout::compost::to_imag_value())
;
}
} // namespace formats
using sprout::compost::formats::as_imag;
} // namespace compost
} // namespace sprout
#endif // #ifndef SPROUT_COMPOST_FORMATS_AS_IMAG_HPP