hybsegment.hpp

/****************************************************************************
 *
 * ALPS DMFT Project
 *
 * Copyright (C) 2012 by Emanuel Gull <gull@pks.mpg.de>,
 *                   
 *  based on an earlier version by Philipp Werner and Emanuel Gull
 *
 *
 * This software is part of the ALPS Applications, published under the ALPS
 * Application License; you can use, redistribute it and/or modify it under
 * the terms of the license, either version 1 or (at your option) any later
 * version.
 * 
 * You should have received a copy of the ALPS Application License along with
 * the ALPS Applications; see the file LICENSE.txt. If not, the license is also
 * available from http://alps.comp-phys.org/.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 
 * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 *
 *****************************************************************************/
#ifndef HYB_SEG_HPP
#define HYB_SEG_HPP
#include<fstream>

//the struct 'segment' has a start and an end time and a comparison function.
//segment describes a pair of operators in an orbital: t_start is the c^\dagger, t_end is the c operator.
struct segment
{
  segment(){};
  segment(double t_start, double t_end){t_start_=t_start; t_end_=t_end;}
  double t_start_, t_end_;
  
  bool operator<(const segment &t2)const { return t_start_<t2.t_start_; }
  bool operator<(const double &t2) const { return t_start_<t2; }
};

std::ostream &operator<<(std::ostream &os, const segment &s);

#endif