Cannot sample enough valid points. (more)

\[\lambda_1 + \tan^{-1}_* \frac{\left(\sin theta \cdot \sin delta\right) \cdot \cos \phi_1}{\cos delta - \sin \phi_1 \cdot \sin \left(\sin^{-1} \left(\sin \phi_1 \cdot \cos delta + \left(\cos \phi_1 \cdot \sin delta\right) \cdot \cos theta\right)\right)}\]
\lambda_1 + \tan^{-1}_* \frac{\left(\sin theta \cdot \sin delta\right) \cdot \cos \phi_1}{\cos delta - \sin \phi_1 \cdot \sin \left(\sin^{-1} \left(\sin \phi_1 \cdot \cos delta + \left(\cos \phi_1 \cdot \sin delta\right) \cdot \cos theta\right)\right)}
double f(double lambda1, double phi1, double __attribute__((unused)) phi2, double delta, double theta) {
        double r15762501 = lambda1;
        double r15762502 = theta;
        double r15762503 = sin(r15762502);
        double r15762504 = delta;
        double r15762505 = sin(r15762504);
        double r15762506 = r15762503 * r15762505;
        double r15762507 = phi1;
        double r15762508 = cos(r15762507);
        double r15762509 = r15762506 * r15762508;
        double r15762510 = cos(r15762504);
        double r15762511 = sin(r15762507);
        double r15762512 = r15762511 * r15762510;
        double r15762513 = r15762508 * r15762505;
        double r15762514 = cos(r15762502);
        double r15762515 = r15762513 * r15762514;
        double r15762516 = r15762512 + r15762515;
        double r15762517 = asin(r15762516);
        double r15762518 = sin(r15762517);
        double r15762519 = r15762511 * r15762518;
        double r15762520 = r15762510 - r15762519;
        double r15762521 = atan2(r15762509, r15762520);
        double r15762522 = r15762501 + r15762521;
        return r15762522;
}