104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/*
|
|
* This file is part of libgim.
|
|
*
|
|
* libgim is free software: you can redistribute it and/or modify it under the
|
|
* terms of the GNU General Public License as published by the Free Software
|
|
* Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Copyright 2014 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
#include "rational.hpp"
|
|
|
|
#include <cstdint>
|
|
|
|
using util::rational;
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
rational<T>::rational (T _n, T _d):
|
|
n (_n),
|
|
d (_d)
|
|
{ ; }
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
bool
|
|
rational<T>::operator== (const rational<T> &rhs) {
|
|
return rhs.n == n && rhs.d == d;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
rational<T>::operator float (void) const {
|
|
return static_cast<float> (n) / d;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
rational<T>::operator double (void) const {
|
|
return static_cast<double> (n) / d;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
rational<T>::operator int (void) const {
|
|
return n / d;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
rational<T>
|
|
rational<T>::inverse (void) const {
|
|
return rational<T> { d, n };
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
template <typename U>
|
|
rational<T>
|
|
rational<T>::operator* (const U &rhs) const {
|
|
return { rhs * n, d };
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T>
|
|
template <typename U>
|
|
rational<T>
|
|
rational<T>::operator/ (const U &rhs) const {
|
|
return { n, rhs * d };
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <typename T, typename U>
|
|
rational<T>
|
|
util::operator/ (U lhs, rational<T> rhs) {
|
|
return rhs.inverse () * lhs;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
namespace util {
|
|
template struct rational<uint32_t>;
|
|
template struct rational<int32_t>;
|
|
|
|
template rational<uint32_t> operator/ (int, rational<uint32_t>);
|
|
}
|