Class cubic_real_coeff_gsl (o2scl)

O2scl : Class List

class o2scl::cubic_real_coeff_gsl : public o2scl::cubic_real_coeff

Solve a cubic with real coefficients and complex roots (GSL)

Public Functions

~cubic_real_coeff_gsl()
int solve_rc(const double a3, const double b3, const double c3, const double d3, double &x1, std::complex<double> &x2, std::complex<double> &x3)

Solves the polynomial \( a_3 x^3 + b_3 x^2 + c_3 x + d_3= 0 \) giving the real solution \( x=x_1 \) and two complex solutions \( x=x_2 \) and \( x=x_3 \) .

const char *type()

Return a string denoting the type (“cubic_real_coeff_gsl”)

int gsl_poly_complex_solve_cubic2(double a, double b, double c, gsl_complex *z0, gsl_complex *z1, gsl_complex *z2)

An alternative to gsl_poly_complex_solve_cubic()

This is an alternative to the function gsl_poly_complex_solve_cubic() with some small corrections to ensure finite values for some cubics. See src/other/poly_ts.cpp for more.

Idea for Future:

I think the GSL function is now fixed, so we can fall back to the original GSL function here.