Use the --timeout flag to change the timeout.
\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 r6202777 = lambda1;
double r6202778 = theta;
double r6202779 = sin(r6202778);
double r6202780 = delta;
double r6202781 = sin(r6202780);
double r6202782 = r6202779 * r6202781;
double r6202783 = phi1;
double r6202784 = cos(r6202783);
double r6202785 = r6202782 * r6202784;
double r6202786 = cos(r6202780);
double r6202787 = sin(r6202783);
double r6202788 = r6202787 * r6202786;
double r6202789 = r6202784 * r6202781;
double r6202790 = cos(r6202778);
double r6202791 = r6202789 * r6202790;
double r6202792 = r6202788 + r6202791;
double r6202793 = asin(r6202792);
double r6202794 = sin(r6202793);
double r6202795 = r6202787 * r6202794;
double r6202796 = r6202786 - r6202795;
double r6202797 = atan2(r6202785, r6202796);
double r6202798 = r6202777 + r6202797;
return r6202798;
}
herbie shell --seed 2019112 +o rules:numerics
(FPCore (lambda1 phi1 phi2 delta theta)
:name "Destination given bearing on a great circle"
(+ lambda1 (atan2 (* (* (sin theta) (sin delta)) (cos phi1)) (- (cos delta) (* (sin phi1) (sin (asin (+ (* (sin phi1) (cos delta)) (* (* (cos phi1) (sin delta)) (cos theta))))))))))