Exception for NMSE Section 6.1 mentioned, A

• Falling back on racket egraph because egg-herbie package not installed

• could not determine a ground truth for program body

  1. x = -1.0273475339275786e+194
  2. eps = -2.8343233054530806e-08

Math

\[\frac{\left(1 + \frac{1}{\varepsilon}\right) \cdot e^{-\left(1 - \varepsilon\right) \cdot x} - \left(\frac{1}{\varepsilon} - 1\right) \cdot e^{-\left(1 + \varepsilon\right) \cdot x}}{2}\]

C

double f(double x, double eps) {
        double r6206 = 1.0;
        double r6207 = eps;
        double r6208 = r6206 / r6207;
        double r6209 = r6206 + r6208;
        double r6210 = r6206 - r6207;
        double r6211 = x;
        double r6212 = r6210 * r6211;
        double r6213 = -r6212;
        double r6214 = exp(r6213);
        double r6215 = r6209 * r6214;
        double r6216 = r6208 - r6206;
        double r6217 = r6206 + r6207;
        double r6218 = r6217 * r6211;
        double r6219 = -r6218;
        double r6220 = exp(r6219);
        double r6221 = r6216 * r6220;
        double r6222 = r6215 - r6221;
        double r6223 = 2.0;
        double r6224 = r6222 / r6223;
        return r6224;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2020045 
(FPCore (x eps)
  :name "NMSE Section 6.1 mentioned, A"
  :precision binary64
  (/ (- (* (+ 1 (/ 1 eps)) (exp (- (* (- 1 eps) x)))) (* (- (/ 1 eps) 1) (exp (- (* (+ 1 eps) x))))) 2))

Backtrace

hash-ref: no value found for key key: '(* #<enode 17(147)> #<enode 156(156)>)		L	C
for-loop	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding/regraph/egraph.rkt	270	6
update-leader!	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding/regraph/egraph.rkt	265	0
for-loop	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding/regraph/main.rkt	77	2
prune-phase	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding/regraph/main.rkt	74	0
for-loop	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding-2/src/core/simplify.rkt	80	4
for-loop	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding-2/src/core/simplify.rkt	76	2
(unnamed)	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding-2/src/core/simplify.rkt	56	0
(unnamed)	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding-2/src/core/simplify.rkt	38	0
simplify!	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding-2/src/mainloop.rkt	224	0
run-improve47	/data/pavpan/nightlies/herbie/simplify-regraph-rebuilding-2/src/mainloop.rkt	346	0
.../more-scheme.rkt:261:28	unknown
run	/opt/racket-7.5/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.5/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.5/collects/racket/private/more-scheme.rkt	261	28