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Sprout/sprout/complex/stream_operators.hpp
2017-07-29 14:20:01 +09:00

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1.6 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_COMPLEX_STREAM_OPERATORS_HPP
#define SPROUT_COMPLEX_STREAM_OPERATORS_HPP
#include <istream>
#include <ostream>
#include <sprout/config.hpp>
#include <sprout/complex/complex.hpp>
namespace sprout {
template<typename T, typename Char, typename Traits>
inline SPROUT_NON_CONSTEXPR std::basic_istream<Char, Traits>&
operator>>(std::basic_istream<Char, Traits>& lhs, sprout::complex<T>& rhs) {
T re, im;
Char ch;
lhs >> ch;
if (ch == '(') {
lhs >> re >> ch;
if (ch == ',') {
lhs >> im >> ch;
if (ch == ')') {
rhs = sprout::complex<T>(re, im);
} else {
lhs.setstate(std::ios_base::failbit);
}
} else if (ch == ')') {
rhs = re;
} else {
lhs.setstate(std::ios_base::failbit);
}
} else {
lhs.putback(ch);
lhs >> re;
rhs = re;
}
return lhs;
}
template<typename T, typename Char, typename Traits>
inline SPROUT_NON_CONSTEXPR std::basic_ostream<Char, Traits>&
operator<<(std::basic_ostream<Char, Traits>& lhs, sprout::complex<T> const& rhs) {
return lhs << '(' << rhs.real() << ',' << rhs.imag() << ')';
}
} // namespace sprout
#endif // #ifndef SPROUT_COMPLEX_STREAM_OPERATORS_HPP