/*
  Copyright (C) 2018 David Robillard <d@drobilla.net>
  Copyright (C) 2006-2007 Chris Hamilton <chamilton@cs.dal.ca>

  This program 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 2 of the License, or (at your option) any later
  version.

  This program 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
  this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#ifndef CHILBERT_GETBITS_HPP
#define CHILBERT_GETBITS_HPP

#include "chilbert/Operations.hpp"

namespace chilbert {

/** Copy a range of bits from one field to the start of another.
 *
 * @param h Source bit field
 * @param n Number of bits
 * @param i Start bit index in source
 * @param w Destination bit field
 */
template <class H, class I>
inline void
getBits(const H& h, const size_t n, const size_t i, I& w)
{
	for (size_t j = 0; j < n; j++) {
		setBit(w, j, testBit(h, i + j));
	}
}

} // namespace chilbert

#endif