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ProductFunction.h
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ProductFunction.h
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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2007 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 +
#pragma once
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAPI/CompositeFunction.h"
#include "MantidCurveFitting/DllConfig.h"
#include <cmath>
#include <memory>
namespace Mantid {
namespace CurveFitting {
namespace Functions {
/**
Allow user to create a fit function which is the product of two or
more other fit functions.
@author Anders Markvardsen, ISIS, RAL
@date 4/4/2011
*/
class MANTID_CURVEFITTING_DLL ProductFunction : public API::CompositeFunction {
public:
/// overwrite IFunction base class methods
std::string name() const override { return "ProductFunction"; }
/// Function you want to fit to.
/// @param domain :: The space on which the function acts
/// @param values :: The buffer for writing the calculated values. Must be big
/// enough to accept dataSize() values
void function(const API::FunctionDomain &domain,
API::FunctionValues &values) const override;
/// Calculate the derivatives
void functionDeriv(const API::FunctionDomain &domain,
API::Jacobian &jacobian) override;
protected:
/// overwrite IFunction base class method, which declare function parameters
void init() override{};
};
} // namespace Functions
} // namespace CurveFitting
} // namespace Mantid