\[\frac{60 \cdot \left(x - y\right)}{z - t} + a \cdot 120\]

\frac{60 \cdot \left(x - y\right)}{z - t} + a \cdot 120

double f(double x, double y, double z, double t, double a) {
        double r9561 = 60.0;
        double r9562 = x;
        double r9563 = y;
        double r9564 = r9562 - r9563;
        double r9565 = r9561 * r9564;
        double r9566 = z;
        double r9567 = t;
        double r9568 = r9566 - r9567;
        double r9569 = r9565 / r9568;
        double r9570 = a;
        double r9571 = 120.0;
        double r9572 = r9570 * r9571;
        double r9573 = r9569 + r9572;
        return r9573;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019179 +o rules:numerics
(FPCore (x y z t a)
  :name "Data.Colour.RGB:hslsv from colour-2.3.3, B"

  :herbie-target
  (+ (/ 60.0 (/ (- z t) (- x y))) (* a 120.0))

  (+ (/ (* 60.0 (- x y)) (- z t)) (* a 120.0)))

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