Class poly_real_coeff_gsl (o2scl)

O2scl : Class List

template<class fp_t = double, class cx_t = std::complex<fp_t>, class coeff_vec_t = std::vector<double>, class root_vec_t = std::vector<std::complex<double>>>
class poly_real_coeff_gsl : public o2scl::poly_real_coeff<double, std::complex<double>>

Solve a general polynomial with real coefficients (GSL)

Public Functions

inline poly_real_coeff_gsl()

inline virtual ~poly_real_coeff_gsl()

inline virtual int solve_rc_arr(int n, const coeff_vec_t &co, root_vec_t &ro)

Solve a generic polynomial given n+1 coefficients.

Note

In order to be consistent with the other solve_rc() functions, the ordering of the coefficients is reversed with respect to gsl_poly_complex_solve(). The leading coefficient is stored in co[0] and the constant term is stored in co[n].

inline virtual int solve_rc(const fp_t a2, const fp_t b2, const fp_t c2, cx_t &r1, cx_t &r2)

Solve a quadratic polynomial with real coefficients.

inline virtual int solve_rc(const fp_t a3, const fp_t b3, const fp_t c3, const fp_t d3, fp_t &r1, cx_t &r2, cx_t &r3)

Solve a cubic polynomial with real coefficients.

inline virtual int solve_rc(const fp_t a4, const fp_t b4, const fp_t c4, const fp_t d4, const fp_t e4, cx_t &r1, cx_t &r2, cx_t &r3, cx_t &r4)

Solve a quartic polynomial with real coefficients.

inline const char *type()

Return a string denoting the type (“poly_real_coeff_gsl”)

Public Members

bool check_refine

Check each root and automatically refine.

Protected Attributes

gsl_poly_complex_workspace *w2

Workspace for quadratic polynomials.

gsl_poly_complex_workspace *w3

Workspace for cubic polynomials.

gsl_poly_complex_workspace *w4

Workspace for quartic polynomials.

gsl_poly_complex_workspace *wgen

Workspace for general polynomials.

int gen_size

The size of the workspace wgen.