ProductFunction.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 "MantidCurveFitting/Functions/ProductFunction.h"
#include "MantidAPI/FunctionFactory.h"
 
namespace Mantid::CurveFitting::Functions {
 
using namespace CurveFitting;
 
DECLARE_FUNCTION(ProductFunction)
 
 
void ProductFunction::function(const API::FunctionDomain &domain, API::FunctionValues &values) const {
  API::FunctionValues tmp(domain);
  values.setCalculated(1.0);
  for (size_t iFun = 0; iFun < nFunctions(); ++iFun) {
    domain.reset();
    getFunction(iFun)->function(domain, tmp);
    values *= tmp;
  }
}
 
void ProductFunction::functionDeriv(const API::FunctionDomain &domain, API::Jacobian &jacobian) {
  calNumericalDeriv(domain, jacobian);
}
 
} // namespace Mantid::CurveFitting::Functions