\[\frac{\left(\left(\left(x \cdot y + z\right) \cdot y + 27464.7644704999984242022037506103515625\right) \cdot y + 230661.5106160000141244381666183471679688\right) \cdot y + t}{\left(\left(\left(y + a\right) \cdot y + b\right) \cdot y + c\right) \cdot y + i}\]

\frac{\left(\left(\left(x \cdot y + z\right) \cdot y + 27464.7644704999984242022037506103515625\right) \cdot y + 230661.5106160000141244381666183471679688\right) \cdot y + t}{\left(\left(\left(y + a\right) \cdot y + b\right) \cdot y + c\right) \cdot y + i}

double f(double x, double y, double z, double t, double a, double b, double c, double i) {
        double r8240 = x;
        double r8241 = y;
        double r8242 = r8240 * r8241;
        double r8243 = z;
        double r8244 = r8242 + r8243;
        double r8245 = r8244 * r8241;
        double r8246 = 27464.7644705;
        double r8247 = r8245 + r8246;
        double r8248 = r8247 * r8241;
        double r8249 = 230661.510616;
        double r8250 = r8248 + r8249;
        double r8251 = r8250 * r8241;
        double r8252 = t;
        double r8253 = r8251 + r8252;
        double r8254 = a;
        double r8255 = r8241 + r8254;
        double r8256 = r8255 * r8241;
        double r8257 = b;
        double r8258 = r8256 + r8257;
        double r8259 = r8258 * r8241;
        double r8260 = c;
        double r8261 = r8259 + r8260;
        double r8262 = r8261 * r8241;
        double r8263 = i;
        double r8264 = r8262 + r8263;
        double r8265 = r8253 / r8264;
        return r8265;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (x y z t a b c i)
  :name "Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2"
  (/ (+ (* (+ (* (+ (* (+ (* x y) z) y) 27464.7644705) y) 230661.510616) y) t) (+ (* (+ (* (+ (* (+ y a) y) b) y) c) y) i)))

Backtrace

get-representation: Unknown representation #f		L	C
loop	/data/pavpan/nightlies/herbie/interface2/src/points.rkt	122	4
prepare-points	/data/pavpan/nightlies/herbie/interface2/src/points.rkt	146	0
setup-prog!34	/data/pavpan/nightlies/herbie/interface2/src/mainloop.rkt	67	0
run-improve43	/data/pavpan/nightlies/herbie/interface2/src/mainloop.rkt	339	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28