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 r10710122 = lambda1;
        double r10710123 = lambda2;
        double r10710124 = r10710122 - r10710123;
        double r10710125 = sin(r10710124);
        double r10710126 = phi2;
        double r10710127 = cos(r10710126);
        double r10710128 = r10710125 * r10710127;
        double r10710129 = phi1;
        double r10710130 = cos(r10710129);
        double r10710131 = sin(r10710126);
        double r10710132 = r10710130 * r10710131;
        double r10710133 = sin(r10710129);
        double r10710134 = r10710133 * r10710127;
        double r10710135 = cos(r10710124);
        double r10710136 = r10710134 * r10710135;
        double r10710137 = r10710132 - r10710136;
        double r10710138 = atan2(r10710128, r10710137);
        return r10710138;
}