Sprout/sprout/rational/io.hpp
2012-08-29 01:16:12 +09:00

41 lines
1.1 KiB
C++

#ifndef SPROUT_RATIONAL_IO_HPP
#define SPROUT_RATIONAL_IO_HPP
#include <ios>
#include <iostream>
#include <sprout/config.hpp>
#include <sprout/rational/rational.hpp>
#include <sprout/detail/io/ios_state.hpp>
namespace sprout {
//
// operator>>
// operator<<
//
template<typename Elem, typename Traits, typename IntType>
inline std::basic_istream<Elem, Traits>&
operator>>(std::basic_istream<Elem, Traits>& lhs, sprout::rational<IntType>& rhs) {
IntType n = IntType(0);
IntType d = IntType(1);
Elem c = 0;
sprout::detail::io::ios_flags_saver saver(lhs);
lhs >> n;
c = lhs.get();
if (c != Elem('/')) {
lhs.clear(std::istream::badbit);
}
lhs >> std::noskipws;
lhs >> d;
if (lhs) {
rhs.assign(n, d);
}
return lhs;
}
template<typename Elem, typename Traits, typename IntType>
inline std::basic_ostream<Elem, Traits>&
operator<<(std::basic_ostream<Elem, Traits>& lhs, sprout::rational<IntType> const& rhs) {
return lhs << rhs.numerator() << Elem('/') << rhs.denominator();
}
} // namespace sprout
#endif // SPROUT_RATIONAL_IO_HPP