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// @(#)root/mathmore:$Id$
// Author: L. Moneta 2009
// Header file for class MinimizerVariable
#ifndef ROOT_Math_MinimizerVariableTransformation
#define ROOT_Math_MinimizerVariableTransformation
namespace ROOT {
namespace Math {
/**
Base class for MinimizerVariable transformations defining the functions to deal
with bounded parameters
@ingroup MultiMin
*/
class MinimizerVariableTransformation {
public:
virtual ~MinimizerVariableTransformation() {}
virtual double Int2ext(double value, double lower, double upper) const = 0;
virtual double Ext2int(double value, double lower, double upper) const = 0;
virtual double DInt2Ext(double value, double lower, double upper) const = 0;
};
/**
Sin Transformation class for dealing with double bounded variables
@ingroup MultiMin
*/
class SinVariableTransformation : public MinimizerVariableTransformation {
public:
virtual ~SinVariableTransformation() {}
double Int2ext(double value, double lower, double upper) const;
double Ext2int(double value, double lower, double upper) const;
double DInt2Ext(double value, double lower, double upper) const;
private:
};
/**
Sqrt Transformation class for dealing with lower bounded variables
@ingroup MultiMin
*/
class SqrtLowVariableTransformation : public MinimizerVariableTransformation {
public:
virtual ~SqrtLowVariableTransformation() {}
double Int2ext(double value, double lower, double upper) const;
double Ext2int(double value, double lower, double upper) const;
double DInt2Ext(double value, double lower, double upper) const;
};
/**
Sqrt Transformation class for dealing with upper bounded variables
@ingroup MultiMin
*/
class SqrtUpVariableTransformation : public MinimizerVariableTransformation {
public:
virtual ~SqrtUpVariableTransformation() {}
double Int2ext(double value, double lower, double upper) const;
double Ext2int(double value, double lower, double upper) const;
double DInt2Ext(double value, double lower, double upper) const;
};
} // end namespace Math
} // end namespace ROOT
#endif /* ROOT_Math_MinimizerVariableTransformation */
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