Use the --timeout flag to change the timeout.
\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}^{\left(\left(z - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099298181841732002794742584 + \frac{676.5203681218850988443591631948947906494}{\left(z - 1\right) + 1}\right) + \frac{-1259.139216722402807135949842631816864014}{\left(z - 1\right) + 2}\right) + \frac{771.3234287776531346025876700878143310547}{\left(z - 1\right) + 3}\right) + \frac{-176.6150291621405870046146446838974952698}{\left(z - 1\right) + 4}\right) + \frac{12.50734327868690520801919774385169148445}{\left(z - 1\right) + 5}\right) + \frac{-0.1385710952657201178173096423051902092993}{\left(z - 1\right) + 6}\right) + \frac{9.984369578019571583242346146658263705831 \cdot 10^{-6}}{\left(z - 1\right) + 7}\right) + \frac{1.505632735149311617592788074479481785772 \cdot 10^{-7}}{\left(z - 1\right) + 8}\right)double f(double z) {
double r114395 = atan2(1.0, 0.0);
double r114396 = 2.0;
double r114397 = r114395 * r114396;
double r114398 = sqrt(r114397);
double r114399 = z;
double r114400 = 1.0;
double r114401 = r114399 - r114400;
double r114402 = 7.0;
double r114403 = r114401 + r114402;
double r114404 = 0.5;
double r114405 = r114403 + r114404;
double r114406 = r114401 + r114404;
double r114407 = pow(r114405, r114406);
double r114408 = r114398 * r114407;
double r114409 = -r114405;
double r114410 = exp(r114409);
double r114411 = r114408 * r114410;
double r114412 = 0.9999999999998099;
double r114413 = 676.5203681218851;
double r114414 = r114401 + r114400;
double r114415 = r114413 / r114414;
double r114416 = r114412 + r114415;
double r114417 = -1259.1392167224028;
double r114418 = r114401 + r114396;
double r114419 = r114417 / r114418;
double r114420 = r114416 + r114419;
double r114421 = 771.3234287776531;
double r114422 = 3.0;
double r114423 = r114401 + r114422;
double r114424 = r114421 / r114423;
double r114425 = r114420 + r114424;
double r114426 = -176.6150291621406;
double r114427 = 4.0;
double r114428 = r114401 + r114427;
double r114429 = r114426 / r114428;
double r114430 = r114425 + r114429;
double r114431 = 12.507343278686905;
double r114432 = 5.0;
double r114433 = r114401 + r114432;
double r114434 = r114431 / r114433;
double r114435 = r114430 + r114434;
double r114436 = -0.13857109526572012;
double r114437 = 6.0;
double r114438 = r114401 + r114437;
double r114439 = r114436 / r114438;
double r114440 = r114435 + r114439;
double r114441 = 9.984369578019572e-06;
double r114442 = r114441 / r114403;
double r114443 = r114440 + r114442;
double r114444 = 1.5056327351493116e-07;
double r114445 = 8.0;
double r114446 = r114401 + r114445;
double r114447 = r114444 / r114446;
double r114448 = r114443 + r114447;
double r114449 = r114411 * r114448;
return r114449;
}
herbie shell --seed 2020002 +o rules:numerics
(FPCore (z)
:name "Jmat.Real.gamma, branch z greater than 0.5"
:precision binary64
(* (* (* (sqrt (* PI 2)) (pow (+ (+ (- z 1) 7) 0.5) (+ (- z 1) 0.5))) (exp (- (+ (+ (- z 1) 7) 0.5)))) (+ (+ (+ (+ (+ (+ (+ (+ 0.9999999999998099 (/ 676.5203681218851 (+ (- z 1) 1))) (/ -1259.1392167224028 (+ (- z 1) 2))) (/ 771.3234287776531 (+ (- z 1) 3))) (/ -176.6150291621406 (+ (- z 1) 4))) (/ 12.507343278686905 (+ (- z 1) 5))) (/ -0.13857109526572012 (+ (- z 1) 6))) (/ 9.984369578019572e-06 (+ (- z 1) 7))) (/ 1.5056327351493116e-07 (+ (- z 1) 8)))))