dft_tools/triqs/gfs/domains/legendre.hpp

/*******************************************************************************
 *
 * TRIQS: a Toolbox for Research in Interacting Quantum Systems
 *
 * Copyright (C) 2012 by M. Ferrero, O. Parcollet
 *
 * TRIQS 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.
 *
 * TRIQS 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
 * TRIQS. If not, see <http://www.gnu.org/licenses/>.
 *
 ******************************************************************************/
#ifndef TRIQS_GF_LEGENDRE_DOMAIN_H
#define TRIQS_GF_LEGENDRE_DOMAIN_H

#include "../tools.hpp"

namespace triqs { namespace gfs { 

 /// The domain
 class legendre_domain {

  public:

  double beta;
  statistic_enum statistic;
  size_t Nmax;

  typedef long point_t;
  size_t size() const { return Nmax;};

  legendre_domain (double beta_ = 1, statistic_enum stat_ = Fermion, size_t Nmax_=1) : beta(beta_), statistic(stat_), Nmax(Nmax_) {}

  bool operator == (legendre_domain const & D) const {
    return ((std::abs(beta - D.beta)<1.e-15) && (statistic == D.statistic) && (Nmax == D.Nmax));
  }

  /// Write into HDF5
  friend void h5_write (h5::group fg, std::string subgroup_name, legendre_domain const & d) {
   h5::group gr =  fg.create_group(subgroup_name);
   h5_write(gr,"n_max",d.Nmax);
   h5_write(gr,"beta",d.beta);
   h5_write(gr,"statistic",(d.statistic==Fermion ? "F" : "B"));
  }

  /// Read from HDF5
  friend void h5_read  (h5::group fg, std::string subgroup_name, legendre_domain & d){
   h5::group gr = fg.open_group(subgroup_name);
   long n; double beta; std::string statistic;
   h5_read(gr,"n_max",n);
   h5_read(gr,"beta",beta);
   h5_read(gr,"statistic",statistic);
   d = legendre_domain(beta,(statistic=="F" ? Fermion : Boson),n);
  }

  //  BOOST Serialization
  friend class boost::serialization::access;
  template<class Archive>
  void serialize(Archive & ar, const unsigned int version) {
    ar & boost::serialization::make_nvp("n_max",Nmax);
    ar & boost::serialization::make_nvp("beta",beta);
    ar & boost::serialization::make_nvp("statistic",statistic);
  }

 };

}}
#endif