Use the --timeout flag to change the timeout.
\frac{2}{\left(\left(\frac{{t}^{3}}{\ell \cdot \ell} \cdot \sin k\right) \cdot \tan k\right) \cdot \left(\left(1 + {\left(\frac{k}{t}\right)}^{2}\right) - 1\right)}double f(double t, double l, double k) {
double r24267297 = 2.0;
double r24267298 = t;
double r24267299 = 3.0;
double r24267300 = pow(r24267298, r24267299);
double r24267301 = l;
double r24267302 = r24267301 * r24267301;
double r24267303 = r24267300 / r24267302;
double r24267304 = k;
double r24267305 = sin(r24267304);
double r24267306 = r24267303 * r24267305;
double r24267307 = tan(r24267304);
double r24267308 = r24267306 * r24267307;
double r24267309 = 1.0;
double r24267310 = r24267304 / r24267298;
double r24267311 = pow(r24267310, r24267297);
double r24267312 = r24267309 + r24267311;
double r24267313 = r24267312 - r24267309;
double r24267314 = r24267308 * r24267313;
double r24267315 = r24267297 / r24267314;
return r24267315;
}
herbie shell --seed 2019128 +o rules:numerics
(FPCore (t l k)
:name "Toniolo and Linder, Equation (10-)"
(/ 2 (* (* (* (/ (pow t 3) (* l l)) (sin k)) (tan k)) (- (+ 1 (pow (/ k t) 2)) 1))))