normal.H

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Class
    Foam::distributionModels::normal

Description
    A normal distribution model

    \verbatim
        model = strength * exp(-0.5*((x - expectation)/variance)^2 )
    \endverbatim

    strength only has meaning if there's more than one distribution model

SourceFiles
    normal.C

\*---------------------------------------------------------------------------*/

#ifndef normal_H
#define normal_H

#include "distributionModel.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
namespace distributionModels
{

/*---------------------------------------------------------------------------*\
                           Class normal Declaration
\*---------------------------------------------------------------------------*/

class normal
:
    public distributionModel
{
    // Private data


        //- Distribution minimum
        scalar minValue_;

        //- Distribution maximum
        scalar maxValue_;


        // Model coefficients

            scalar expectation_;
            scalar variance_;

            scalar a_;


public:

    //- Runtime type information
    TypeName("normal");


    // Constructors

        //- Construct from components
        normal(const dictionary& dict, Random& rndGen);

        //- Construct copy
        normal(const normal& p);

        //- Construct and return a clone
        virtual autoPtr<distributionModel> clone() const
        {
            return autoPtr<distributionModel>(new normal(*this));
        }


    //- Destructor
    virtual ~normal();


    // Member Functions

        //- Sample the distributionModel
        virtual scalar sample() const;

        //- Return the minimum value
        virtual scalar minValue() const;

        //- Return the maximum value
        virtual scalar maxValue() const;

        //- Return the mean value
        virtual scalar meanValue() const;

        virtual scalar erfInv(const scalar y) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace distributionModels
} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //