Cannot sample enough valid points. (more)

\[0.0 \lt c_p \land 0.0 \lt c_n\]
\[\frac{{\left(\frac{1}{1 + e^{-s}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-s}}\right)}^{c_n}}{{\left(\frac{1}{1 + e^{-t}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-t}}\right)}^{c_n}}\]
\frac{{\left(\frac{1}{1 + e^{-s}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-s}}\right)}^{c_n}}{{\left(\frac{1}{1 + e^{-t}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-t}}\right)}^{c_n}}
double f(double c_p, double c_n, double t, double s) {
        double r206517 = 1.0;
        double r206518 = s;
        double r206519 = -r206518;
        double r206520 = exp(r206519);
        double r206521 = r206517 + r206520;
        double r206522 = r206517 / r206521;
        double r206523 = c_p;
        double r206524 = pow(r206522, r206523);
        double r206525 = r206517 - r206522;
        double r206526 = c_n;
        double r206527 = pow(r206525, r206526);
        double r206528 = r206524 * r206527;
        double r206529 = t;
        double r206530 = -r206529;
        double r206531 = exp(r206530);
        double r206532 = r206517 + r206531;
        double r206533 = r206517 / r206532;
        double r206534 = pow(r206533, r206523);
        double r206535 = r206517 - r206533;
        double r206536 = pow(r206535, r206526);
        double r206537 = r206534 * r206536;
        double r206538 = r206528 / r206537;
        return r206538;
}