hash.hpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *     Guido Tack <tack@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2018
 *     Guido Tack, 2018
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
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namespace Gecode {

  template<class T>
  void cmb_hash(std::size_t& seed, const T h);

  template<class T>
  forceinline void
  cmb_hash(std::size_t& seed, const T h) {
    seed ^= static_cast<std::size_t>(h) 
      + 0x9e3779b9 + (seed << 6) + (seed >> 2);
  }

}

// STATISTICS: support-any