| 1 | #ifndef MARS_MCubicCoeff
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| 2 | #define MARS_MCubicCoeff
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| 3 |
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| 4 | #ifndef MARS_MAGIC
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| 5 | #include "MAGIC.h"
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| 6 | #endif
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| 7 |
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| 8 | class MCubicCoeff : public TObject
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| 9 | {
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| 10 | private:
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| 11 | Double_t fX; // abscissa
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| 12 | Double_t fXNext; // abscissa of the next point
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| 13 | Double_t fA; // 3rd order coeff
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| 14 | Double_t fB; // 2nd order coeff
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| 15 | Double_t fC; // 1st order coeff
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| 16 | Double_t fY; // constant term
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| 17 | Double_t fYNext; // value in the next point
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| 18 | Double_t fH; // interval width
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| 19 | Double_t fMin; // minimum value
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| 20 | Double_t fMax; // maximum value
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| 21 | Double_t fAbMin; // abscissa of the min
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| 22 | Double_t fAbMax; // abscissa of the max
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| 23 | public:
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| 24 | MCubicCoeff(){}
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| 25 | MCubicCoeff(Double_t x, Double_t xNext, Double_t y, Double_t yNext,
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| 26 | Double_t a, Double_t b, Double_t c);
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| 27 | Double_t GetA() { return fA; }
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| 28 | Double_t GetB() { return fB; }
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| 29 | Double_t GetC() { return fC; }
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| 30 | Double_t GetMin() { return fMin; }
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| 31 | Double_t GetMax() { return fMax; }
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| 32 | Double_t GetAbMin() { return fAbMin; }
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| 33 | Double_t GetAbMax() { return fAbMax; }
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| 34 | Double_t Eval(Double_t x); //Evaluate the spline at a point x
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| 35 | Bool_t EvalMinMax(); //Finds min & max
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| 36 | Short_t FindCardanRoot(Double_t y, Double_t *x); //Evaluate the abscissa of the spline given y
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| 37 | Bool_t IsIn(Double_t x);
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| 38 |
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| 39 | ClassDef(MCubicCoeff, 0) //Class to contain spline coefficients
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| 40 | };
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| 41 |
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| 42 | #endif
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