Sprout/sprout/compost/formats/as_complex.hpp
2017-07-29 14:20:01 +09:00

63 lines
1.8 KiB
C++

/*=============================================================================
Copyright (c) 2011-2017 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_COMPOST_FORMATS_AS_COMPLEX_HPP
#define SPROUT_COMPOST_FORMATS_AS_COMPLEX_HPP
#include <sprout/config.hpp>
#include <sprout/complex.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/range/adaptor/transformed.hpp>
namespace sprout {
namespace compost {
//
// to_complex_value
//
struct to_complex_value {
public:
template<typename FloatType>
SPROUT_CONSTEXPR sprout::complex<FloatType> operator()(FloatType const& x) const {
return sprout::complex<FloatType>(x);
}
};
namespace formats {
//
// as_complex_forwarder
//
class as_complex_forwarder {};
//
// as_complex
//
namespace {
SPROUT_STATIC_CONSTEXPR sprout::compost::formats::as_complex_forwarder as_complex = {};
} // anonymous-namespace
//
// operator|
//
template<typename Range>
inline SPROUT_CONSTEXPR auto
operator|(Range&& lhs, sprout::compost::formats::as_complex_forwarder const&)
-> decltype(
SPROUT_FORWARD(Range, lhs)
| sprout::adaptors::transformed(sprout::compost::to_complex_value())
)
{
return SPROUT_FORWARD(Range, lhs)
| sprout::adaptors::transformed(sprout::compost::to_complex_value())
;
}
} // namespace formats
using sprout::compost::formats::as_complex;
} // namespace compost
} // namespace sprout
#endif // #ifndef SPROUT_COMPOST_FORMATS_AS_COMPLEX_HPP