histogram.hpp

// Copyright (c) 2018--present, The Simons Foundation
// This file is part of TRIQS/ctint and is licensed under the terms of GPLv3 or later.
// SPDX-License-Identifier: GPL-3.0-or-later
// See LICENSE in the root of this distribution for details.
 
#pragma once
#include "../qmc_config.hpp"
#include "../container_set.hpp"
 
namespace triqs_ctint::measures {
 
  // Measure the histogram of perturbation order
  struct histogram {
 
    histogram(params_t const &, qmc_config_t const &qmc_config_, container_set *results);

    void accumulate(mc_weight_t);

    void collect_results(mpi::communicator const &comm);
 
    private:
    // The Monte-Carlo configuration
    qmc_config_t const &qmc_config;
 
    // Reference to accumulation vector
    std::optional<std::vector<double>> &histogram_;
 
    // Accumulation counter
    long N = 0;
  };
 
} // namespace triqs_ctint::measures