tgold.h

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#ifndef GENBB_DECAY0_TGOLD_H_
#define GENBB_DECAY0_TGOLD_H_ 1

// This project:
#include <genbb_help/decay0/common.h>

namespace genbb {
  namespace decay0 {

    // Input:  a,c    - beginning and the end of the interval [a,c];
    //         b      - some point in the middle of the interval
    //         f      - name of the external function; should be as
    //                  function f(x,params), and additional parameters have
    //                  to be transmitted with help of the void pointer params;
    //         eps    - desired uncertainty of xextr determination;
    //         minmax - if minmax = 1 minimum of f(x) is searched,
    //                            = 2 maximum of f(x) is searched.
    //         params - a void pointer referencing additional parameters for f
    // Output: xextr  - x-point of extremum;
    //         fextr  - f(xextr).
    // V.Tretyak, 25.09.1985.
    void decay0_tgold(double a, double b, double c, func_type f,
          double eps, int minmax,
          double & xextr, double & fextr,
          void * params = 0);

    void decay0_tgold_o(double a, double b, double c, func_type f,
                        double eps, int minmax,
                        double & xextr, double &fextr,
            void * params = 0);


  } // end of namespace decay0
} // end of namespace genbb

#endif // GENBB_DECAY0_TGOLD_H_