#pragma once

int det2(double p0, double p1, double q0, double q1);
int det3(double p0, double p1, double p2, double q0, double q1, double q2, double r0, double r1, double r2);
int det4(double a_,
         double b_,
         double c_,
         double d_,
         double e_,
         double f_,
         double g_,
         double h_,
         double i_,
         double j_,
         double k_,
         double l_,
         double m_,
         double n_,
         double o_,
         double p_);
int det5(double a_,
         double b_,
         double c_,
         double d_,
         double e_,
         double f_,
         double g_,
         double h_,
         double i_,
         double j_,
         double k_,
         double l_,
         double m_,
         double n_,
         double o_,
         double p_,
         double q_,
         double r_,
         double s_,
         double t_,
         double u_,
         double v_,
         double w_,
         double x_,
         double y_);