kignumerics.h

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#ifndef KIG_MISC_KIGNUMERICS_H
#define KIG_MISC_KIGNUMERICS_H

#include <cmath>

double calcCubicRoot ( double xmin, double xmax, double a,
      double b, double c, double d, int root, bool& valid, int& numroots );

int calcCubicVariations (double x, double a, double b, double c,
      double d, double p1a, double p1b, double p0a);

double calcCubicRootwithNewton ( double ymin, double ymax, double a,
    double b, double c, double d, double tol );

bool GaussianElimination( double *matrix[], int numrows, int numcols,
                          int scambio[] );

void BackwardSubstitution( double *matrix[], int numrows, int numcols,
                           int scambio[], double solution[] );

bool Invert3by3matrix ( const double m[3][3], double inv[3][3] );

#endif // KIG_MISC_KIGNUMERICS_H