real_polyhedral_homotopy_continuation/reference/include/common/stream_enum.hpp

// This file is part of Bertini 2.
//
// common/stream_enum.hpp 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.
//
// common/stream_enum.hpp 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 tracking/include/trackers/config.hpp.  If not, see
// <http://www.gnu.org/licenses/>.
//
//  Copyright(C) 2015 - 2021 by Bertini2 Development Team
//
//  See <http://www.gnu.org/licenses/> for a copy of the license,
//  as well as COPYING.  Bertini2 is provided with permitted
//  additional terms in the b2/licenses/ directory.

// individual authors of this file include:
// silviana amethyst, university of notre dame, university of wisconsin eau
// claire Tim Hodges, Colorado State University

#pragma once

#include <iostream>

namespace bertini {
/**
\brief Method for printing class enums to streams.

This was adapted from
https://stackoverflow.com/questions/11421432/how-can-i-output-the-value-of-an-enum-class-in-c11
asked by user Adi, answered by James Adkison.  This code was provided
CC-BY-SA 3.

This code does NOT work for streaming enum classes to Boost.Log streams.

\param stream The stream to print to.
\param e The enum value to print
\return The stream you are writing to.
*/
template <typename T>
std::ostream& operator<<(
    typename std::enable_if<std::is_enum<T>::value, std::ostream>::type& stream,
    const T& e) {
  return stream << static_cast<typename std::underlying_type<T>::type>(e);
}

}  // namespace bertini