Timeout in 10.0m

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\[\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}^{\left(\left(z - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(z - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(z - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(z - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(z - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(z - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(z - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-06}}{\left(z - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-07}}{\left(z - 1\right) + 8}\right)\]
\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(0.9999999999998099 + \frac{676.5203681218851}{\left(z - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(z - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(z - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(z - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(z - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(z - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-06}}{\left(z - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-07}}{\left(z - 1\right) + 8}\right)
double f(double z) {
        double r171458292 = atan2(1.0, 0.0);
        double r171458293 = 2.0;
        double r171458294 = r171458292 * r171458293;
        double r171458295 = sqrt(r171458294);
        double r171458296 = z;
        double r171458297 = 1.0;
        double r171458298 = r171458296 - r171458297;
        double r171458299 = 7.0;
        double r171458300 = r171458298 + r171458299;
        double r171458301 = 0.5;
        double r171458302 = r171458300 + r171458301;
        double r171458303 = r171458298 + r171458301;
        double r171458304 = pow(r171458302, r171458303);
        double r171458305 = r171458295 * r171458304;
        double r171458306 = -r171458302;
        double r171458307 = exp(r171458306);
        double r171458308 = r171458305 * r171458307;
        double r171458309 = 0.9999999999998099;
        double r171458310 = 676.5203681218851;
        double r171458311 = r171458298 + r171458297;
        double r171458312 = r171458310 / r171458311;
        double r171458313 = r171458309 + r171458312;
        double r171458314 = -1259.1392167224028;
        double r171458315 = r171458298 + r171458293;
        double r171458316 = r171458314 / r171458315;
        double r171458317 = r171458313 + r171458316;
        double r171458318 = 771.3234287776531;
        double r171458319 = 3.0;
        double r171458320 = r171458298 + r171458319;
        double r171458321 = r171458318 / r171458320;
        double r171458322 = r171458317 + r171458321;
        double r171458323 = -176.6150291621406;
        double r171458324 = 4.0;
        double r171458325 = r171458298 + r171458324;
        double r171458326 = r171458323 / r171458325;
        double r171458327 = r171458322 + r171458326;
        double r171458328 = 12.507343278686905;
        double r171458329 = 5.0;
        double r171458330 = r171458298 + r171458329;
        double r171458331 = r171458328 / r171458330;
        double r171458332 = r171458327 + r171458331;
        double r171458333 = -0.13857109526572012;
        double r171458334 = 6.0;
        double r171458335 = r171458298 + r171458334;
        double r171458336 = r171458333 / r171458335;
        double r171458337 = r171458332 + r171458336;
        double r171458338 = 9.984369578019572e-06;
        double r171458339 = r171458338 / r171458300;
        double r171458340 = r171458337 + r171458339;
        double r171458341 = 1.5056327351493116e-07;
        double r171458342 = 8.0;
        double r171458343 = r171458298 + r171458342;
        double r171458344 = r171458341 / r171458343;
        double r171458345 = r171458340 + r171458344;
        double r171458346 = r171458308 * r171458345;
        return r171458346;
}

Reproduce

herbie shell --seed 2019128 
(FPCore (z)
  :name "Jmat.Real.gamma, branch z greater than 0.5"
  (* (* (* (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)))))