Cannot sample enough valid points. (more)

\[\tan^{-1}_* \frac{\sin \left(\lambda_1 - \lambda_2\right) \cdot \cos \phi_2}{\cos \phi_1 \cdot \sin \phi_2 - \left(\sin \phi_1 \cdot \cos \phi_2\right) \cdot \cos \left(\lambda_1 - \lambda_2\right)}\]
\tan^{-1}_* \frac{\sin \left(\lambda_1 - \lambda_2\right) \cdot \cos \phi_2}{\cos \phi_1 \cdot \sin \phi_2 - \left(\sin \phi_1 \cdot \cos \phi_2\right) \cdot \cos \left(\lambda_1 - \lambda_2\right)}
double f(double lambda1, double lambda2, double phi1, double phi2) {
        double r3630177 = lambda1;
        double r3630178 = lambda2;
        double r3630179 = r3630177 - r3630178;
        double r3630180 = sin(r3630179);
        double r3630181 = phi2;
        double r3630182 = cos(r3630181);
        double r3630183 = r3630180 * r3630182;
        double r3630184 = phi1;
        double r3630185 = cos(r3630184);
        double r3630186 = sin(r3630181);
        double r3630187 = r3630185 * r3630186;
        double r3630188 = sin(r3630184);
        double r3630189 = r3630188 * r3630182;
        double r3630190 = cos(r3630179);
        double r3630191 = r3630189 * r3630190;
        double r3630192 = r3630187 - r3630191;
        double r3630193 = atan2(r3630183, r3630192);
        return r3630193;
}