polynom_solver.h

#ifndef POLYNOM_SOLVER_H
#define POLYNOM_SOLVER_H

int solve_deg2(double a, double b, double c, double & x1, double & x2);

int solve_deg3(double a, double b, double c, double d,
               double & x0, double & x1, double & x2);

int solve_deg4(double a, double b, double c, double d, double e,
               double & x0, double & x1, double & x2, double & x3);

#endif // POLYNOM_SOLVER_H