\[\frac{x + \frac{y \cdot z - x}{t \cdot z - x}}{x + 1}\]

\frac{x + \frac{y \cdot z - x}{t \cdot z - x}}{x + 1}

double f(double x, double y, double z, double t) {
        double r8982 = x;
        double r8983 = y;
        double r8984 = z;
        double r8985 = r8983 * r8984;
        double r8986 = r8985 - r8982;
        double r8987 = t;
        double r8988 = r8987 * r8984;
        double r8989 = r8988 - r8982;
        double r8990 = r8986 / r8989;
        double r8991 = r8982 + r8990;
        double r8992 = 1.0;
        double r8993 = r8982 + r8992;
        double r8994 = r8991 / r8993;
        return r8994;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 
(FPCore (x y z t)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, A"

  :herbie-target
  (/ (+ x (- (/ y (- t (/ x z))) (/ x (- (* t z) x)))) (+ x 1.0))

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

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