\[\frac{e^{x \cdot \log \left(\frac{x}{x + y}\right)}}{x}\]

\frac{e^{x \cdot \log \left(\frac{x}{x + y}\right)}}{x}

double f(double x, double y) {
        double r285012 = x;
        double r285013 = y;
        double r285014 = r285012 + r285013;
        double r285015 = r285012 / r285014;
        double r285016 = log(r285015);
        double r285017 = r285012 * r285016;
        double r285018 = exp(r285017);
        double r285019 = r285018 / r285012;
        return r285019;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019291 
(FPCore (x y)
  :name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, F"
  :precision binary64

  :herbie-target
  (if (< y -3.73118442066479561e94) (/ (exp (/ -1 y)) x) (if (< y 2.81795924272828789e37) (/ (pow (/ x (+ y x)) x) x) (if (< y 2.347387415166998e178) (log (exp (/ (pow (/ x (+ y x)) x) x))) (/ (exp (/ -1 y)) x))))

  (/ (exp (* x (log (/ x (+ x y))))) x))

Backtrace

hash-ref: no value found for key key: 'h0		L	C
for-loop	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	62	6
egg-parsed->expr	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	57	0
for-loop	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	62	6
egg-parsed->expr	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	57	0
for-loop	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	62	6
egg-parsed->expr	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	57	0
for-loop	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/simplify.rkt	50	8
(unnamed)	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/simplify.rkt	48	6
egraph-add-exprs	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	111	0
egraph-run	/data/pavpan/nightlies/herbie/eggmath-testversion/src/core/eggmath.rkt	47	0
simplify!	/data/pavpan/nightlies/herbie/eggmath-testversion/src/mainloop.rkt	223	0
run-iter!	/data/pavpan/nightlies/herbie/eggmath-testversion/src/mainloop.rkt	326	0
for-loop	/data/pavpan/nightlies/herbie/eggmath-testversion/src/mainloop.rkt	364	4
run-improve47	/data/pavpan/nightlies/herbie/eggmath-testversion/src/mainloop.rkt	345	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28