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BSpline.h
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BSpline.h
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#ifndef MANTID_CURVEFITTING_BSPLINE_H_
#define MANTID_CURVEFITTING_BSPLINE_H_
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidCurveFitting/Functions/BackgroundFunction.h"
#include <boost/shared_ptr.hpp>
#include <gsl/gsl_errno.h>
#include <gsl/gsl_bspline.h>
namespace Mantid {
namespace CurveFitting {
namespace Functions {
/**
A wrapper around GSL functions implementing a B-spline.
This function can also calculate derivatives up to order 2 as a by product of
the spline.
Copyright © 2007-8 ISIS Rutherford Appleton Laboratory, NScD Oak Ridge
National Laboratory & European Spallation Source
This file is part of Mantid.
Mantid is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
Mantid is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
File change history is stored at: <https://github.com/mantidproject/mantid>
Code Documentation is available at: <http://doxygen.mantidproject.org>
*/
class DLLExport BSpline : public BackgroundFunction {
public:
/// Constructor
BSpline();
/// overwrite IFunction base class methods
std::string name() const override { return "BSpline"; }
const std::string category() const override { return "Background"; }
void function1D(double *out, const double *xValues,
const size_t nData) const override;
void derivative1D(double *out, const double *xValues, size_t nData,
const size_t order) const override;
/// Set a value to attribute attName
void setAttribute(const std::string &attName, const Attribute &) override;
/// Returns a list of attribute names
std::vector<std::string> getAttributeNames() const override;
private:
/// Initialize the GSL objects.
void resetGSLObjects();
/// Reset fitting parameters
void resetParameters();
/// Reset b-spline knots
void resetKnots();
/// Copy break points from GSL internal objects
void getGSLBreakPoints(std::vector<double> &bp) const;
/// structure used by GSL internally
boost::shared_ptr<gsl_bspline_workspace> m_bsplineWorkspace;
mutable boost::shared_ptr<gsl_bspline_deriv_workspace>
m_bsplineDerivWorkspace;
};
} // namespace Functions
} // namespace CurveFitting
} // namespace Mantid
#endif /*MANTID_CURVEFITTING_BSPLINE_H_*/