Exception for Diagrams.Solve.Polynomial:quartForm from diagrams-solve-0.1, D

Math

\[\frac{x \cdot y}{2} - \frac{z}{8}\]

C

double f(double x, double y, double z) {
        double r8079 = x;
        double r8080 = y;
        double r8081 = r8079 * r8080;
        double r8082 = 2.0;
        double r8083 = r8081 / r8082;
        double r8084 = z;
        double r8085 = 8.0;
        double r8086 = r8084 / r8085;
        double r8087 = r8083 - r8086;
        return r8087;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (x y z)
  :name "Diagrams.Solve.Polynomial:quartForm  from diagrams-solve-0.1, D"
  (- (/ (* x y) 2.0) (/ z 8.0)))

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