/****************************************************************************
 *   This file is part of the aGrUM/pyAgrum library.                        *
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 *   Copyright (c) 2005-2026 by                                             *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
 *                                                                          *
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 *   See LICENCES for more details.                                         *
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 *   SPDX-FileCopyrightText: Copyright 2005-2026                            *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
 *   SPDX-License-Identifier: LGPL-3.0-or-later OR MIT                      *
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 *   Contact  : info_at_agrum_dot_org                                       *
 *   homepage : http://agrum.gitlab.io                                      *
 *   gitlab   : https://gitlab.com/agrumery/agrum                           *
 *                                                                          *
 ****************************************************************************/


/**
 * @file
 * @brief Template implementations for the GTestPolicy class.
 *
 * @author Jean-Christophe MAGNAN
 */
// =========================================================================
#include <agrum/FMDP/learning/core/tupleHashFunc.h>

// =========================================================================


namespace gum {

  // Returns the value of a key as a Size.
  Size HashFunc< std::tuple< unsigned int, unsigned int, unsigned int > >::castToSize(
      const std::tuple< unsigned int, unsigned int, unsigned int >& key) {
    return HashFuncConst::pi * Size(std::get< 0 >(key)) * Size(2) * Size(std::get< 1 >(key))
         * Size(3) * Size(std::get< 2 >(key));
  }

  // the hash function for tuple (unsigned int, unsigned int, unsigned int)
  Size HashFunc< std::tuple< unsigned int, unsigned int, unsigned int > >::operator()(
      const std::tuple< unsigned int, unsigned int, unsigned int >& key) const {
    return (castToSize(key) * HashFuncConst::gold) & this->hash_mask_;
  }

}   // namespace gum
