PowerLawCorrection.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 +
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAlgorithms/PowerLawCorrection.h"
#include "MantidKernel/ArrayProperty.h"
#include <cmath>
 
using namespace Mantid::API;
using namespace Mantid::Kernel;
 
namespace Mantid::Algorithms {
// Register the class into the algorithm factory
DECLARE_ALGORITHM(PowerLawCorrection)
 
PowerLawCorrection::PowerLawCorrection() : UnaryOperation(), m_c0(0.), m_c1(0.) {}
 
void PowerLawCorrection::defineProperties() {
  // We need an array property for the coefficients of the PowerLaw: C0*X^C1
  declareProperty("C0", 1.0, "The value by which the entire calculation is multiplied");
  declareProperty("C1", 1.0, "The power by which the x value is raised");
}
 
void PowerLawCorrection::retrieveProperties() {
  m_c0 = getProperty("C0");
  m_c1 = getProperty("C1");
}
 
void PowerLawCorrection::performUnaryOperation(const double XIn, const double YIn, const double EIn, double &YOut,
                                               double &EOut) {
  double factor = m_c0 * pow(XIn, m_c1);
  // Multiply the data and error by the correction factor
  YOut = YIn * factor;
  EOut = EIn * factor;
}
 
} // namespace Mantid::Algorithms