\[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t\]

\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t

double f(double x, double y, double z, double t) {
        double r9089 = 1.0;
        double r9090 = 8.0;
        double r9091 = r9089 / r9090;
        double r9092 = x;
        double r9093 = r9091 * r9092;
        double r9094 = y;
        double r9095 = z;
        double r9096 = r9094 * r9095;
        double r9097 = 2.0;
        double r9098 = r9096 / r9097;
        double r9099 = r9093 - r9098;
        double r9100 = t;
        double r9101 = r9099 + r9100;
        return r9101;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019179 
(FPCore (x y z t)
  :name "Diagrams.Solve.Polynomial:quartForm  from diagrams-solve-0.1, B"

  :herbie-target
  (- (+ (/ x 8.0) t) (* (/ z 2.0) y))

  (+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))

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	217	0
run-improve43	/data/pavpan/nightlies/herbie/various-cleanup/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