\[\frac{\left(\left(\left(x \cdot y + z\right) \cdot y + 27464.764470499998\right) \cdot y + 230661.510616000014\right) \cdot y + t}{\left(\left(\left(y + a\right) \cdot y + b\right) \cdot y + c\right) \cdot y + i}\]

\frac{\left(\left(\left(x \cdot y + z\right) \cdot y + 27464.764470499998\right) \cdot y + 230661.510616000014\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 r8326 = x;
        double r8327 = y;
        double r8328 = r8326 * r8327;
        double r8329 = z;
        double r8330 = r8328 + r8329;
        double r8331 = r8330 * r8327;
        double r8332 = 27464.7644705;
        double r8333 = r8331 + r8332;
        double r8334 = r8333 * r8327;
        double r8335 = 230661.510616;
        double r8336 = r8334 + r8335;
        double r8337 = r8336 * r8327;
        double r8338 = t;
        double r8339 = r8337 + r8338;
        double r8340 = a;
        double r8341 = r8327 + r8340;
        double r8342 = r8341 * r8327;
        double r8343 = b;
        double r8344 = r8342 + r8343;
        double r8345 = r8344 * r8327;
        double r8346 = c;
        double r8347 = r8345 + r8346;
        double r8348 = r8347 * r8327;
        double r8349 = i;
        double r8350 = r8348 + r8349;
        double r8351 = r8339 / r8350;
        return r8351;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 
(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

result arity mismatch; expected number of values not received expected: 2 received: 1 in: local-binding form values...: 0		L	C
loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/extraction.rkt	25	2
(unnamed)	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	26	0
simplify!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	220	0
run-improve47	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	342	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