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 r2908320 = lambda1;
double r2908321 = theta;
double r2908322 = sin(r2908321);
double r2908323 = delta;
double r2908324 = sin(r2908323);
double r2908325 = r2908322 * r2908324;
double r2908326 = phi1;
double r2908327 = cos(r2908326);
double r2908328 = r2908325 * r2908327;
double r2908329 = cos(r2908323);
double r2908330 = sin(r2908326);
double r2908331 = r2908330 * r2908329;
double r2908332 = r2908327 * r2908324;
double r2908333 = cos(r2908321);
double r2908334 = r2908332 * r2908333;
double r2908335 = r2908331 + r2908334;
double r2908336 = asin(r2908335);
double r2908337 = sin(r2908336);
double r2908338 = r2908330 * r2908337;
double r2908339 = r2908329 - r2908338;
double r2908340 = atan2(r2908328, r2908339);
double r2908341 = r2908320 + r2908340;
return r2908341;
}
herbie shell --seed 2019130 +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))))))))))