MaxentSpaceReal.cpp

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#include "MantidAlgorithms/MaxEnt/MaxentSpaceReal.h"
#include <stdexcept>
 
namespace Mantid::Algorithms {
 
std::vector<double> MaxentSpaceReal::toComplex(const std::vector<double> &values) {
 
  // The output has 2*N values
  std::vector<double> result(values.size() * 2);
 
  for (size_t i = 0; i < values.size(); i++)
    result[2 * i] = values[i];
 
  return result;
}
 
std::vector<double> MaxentSpaceReal::fromComplex(const std::vector<double> &values) {
 
  if (values.size() % 2) {
    throw std::invalid_argument("Cannot convert to real vector");
  }
 
  // The output has N/2 values
  std::vector<double> result(values.size() / 2);
 
  for (size_t i = 0; i < result.size(); i++) {
    result[i] = values[2 * i];
  }
  return result;
}
 
} // namespace Mantid::Algorithms