complex.hpp

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// This file is part of GQCG-GQCP.
//
// Copyright (C) 2017-2020  the GQCG developers
//
// GQCG-GQCP is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GQCG-GQCP 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with GQCG-GQCP.  If not, see <http://www.gnu.org/licenses/>.
 
#pragma once
 
#include "Utilities/type_traits.hpp"
 
#include <complex>
 
 
namespace GQCP {
 
 
using complex = std::complex<double>;
 
 
complex conj(const complex& c);
 
 
double conj(const double d);
 
 
template <typename T>
using IsReal = enable_if_t<std::is_same<T, double>::value>;
 
template <typename T>
using IsComplex = enable_if_t<std::is_same<T, complex>::value>;
 
 
namespace literals {
 
 
constexpr std::complex<double> operator"" _ii(unsigned long long d) {
    return std::complex<double> {0.0, static_cast<double>(d)};
}
 
constexpr std::complex<double> operator"" _ii(long double d) {
    return std::complex<double> {0.0, static_cast<double>(d)};
}
 
 
}  // namespace literals
 
 
}  // namespace GQCP