\[\frac{\left(1 - x\right) \cdot \left(3 - x\right)}{y \cdot 3}\]

\frac{\left(1 - x\right) \cdot \left(3 - x\right)}{y \cdot 3}

double f(double x, double y) {
        double r8761 = 1.0;
        double r8762 = x;
        double r8763 = r8761 - r8762;
        double r8764 = 3.0;
        double r8765 = r8764 - r8762;
        double r8766 = r8763 * r8765;
        double r8767 = y;
        double r8768 = r8767 * r8764;
        double r8769 = r8766 / r8768;
        return r8769;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (x y)
  :name "Diagrams.TwoD.Arc:bezierFromSweepQ1 from diagrams-lib-1.3.0.3"

  :herbie-target
  (* (/ (- 1.0 x) y) (/ (- 3.0 x) 3.0))

  (/ (* (- 1.0 x) (- 3.0 x)) (* y 3.0)))

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