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

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

double f(double x, double y, double z, double t) {
        double r8161 = x;
        double r8162 = y;
        double r8163 = r8161 + r8162;
        double r8164 = z;
        double r8165 = r8163 - r8164;
        double r8166 = t;
        double r8167 = 2.0;
        double r8168 = r8166 * r8167;
        double r8169 = r8165 / r8168;
        return r8169;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (x y z t)
  :name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, B"
  (/ (- (+ x y) z) (* t 2.0)))

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