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 r2667556 = lambda1;
double r2667557 = theta;
double r2667558 = sin(r2667557);
double r2667559 = delta;
double r2667560 = sin(r2667559);
double r2667561 = r2667558 * r2667560;
double r2667562 = phi1;
double r2667563 = cos(r2667562);
double r2667564 = r2667561 * r2667563;
double r2667565 = cos(r2667559);
double r2667566 = sin(r2667562);
double r2667567 = r2667566 * r2667565;
double r2667568 = r2667563 * r2667560;
double r2667569 = cos(r2667557);
double r2667570 = r2667568 * r2667569;
double r2667571 = r2667567 + r2667570;
double r2667572 = asin(r2667571);
double r2667573 = sin(r2667572);
double r2667574 = r2667566 * r2667573;
double r2667575 = r2667565 - r2667574;
double r2667576 = atan2(r2667564, r2667575);
double r2667577 = r2667556 + r2667576;
return r2667577;
}
herbie shell --seed 2019134
(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))))))))))