\[\left(\left(\left(\left(x \cdot \log y + z\right) + t\right) + a\right) + \left(b - 0.5\right) \cdot \log c\right) + y \cdot i\]

\left(\left(\left(\left(x \cdot \log y + z\right) + t\right) + a\right) + \left(b - 0.5\right) \cdot \log c\right) + y \cdot i

double f(double x, double y, double z, double t, double a, double b, double c, double i) {
        double r8266 = x;
        double r8267 = y;
        double r8268 = log(r8267);
        double r8269 = r8266 * r8268;
        double r8270 = z;
        double r8271 = r8269 + r8270;
        double r8272 = t;
        double r8273 = r8271 + r8272;
        double r8274 = a;
        double r8275 = r8273 + r8274;
        double r8276 = b;
        double r8277 = 0.5;
        double r8278 = r8276 - r8277;
        double r8279 = c;
        double r8280 = log(r8279);
        double r8281 = r8278 * r8280;
        double r8282 = r8275 + r8281;
        double r8283 = i;
        double r8284 = r8267 * r8283;
        double r8285 = r8282 + r8284;
        return r8285;
}

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:logBeta from math-functions-0.1.5.2, B"
  (+ (+ (+ (+ (+ (* x (log y)) z) t) a) (* (- b 0.5) (log 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