Exception for Maksimov and Kolovsky, Equation (3)

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

Math

\[\left(\left(-2 \cdot J\right) \cdot \cos \left(\frac{K}{2}\right)\right) \cdot \sqrt{1 + {\left(\frac{U}{\left(2 \cdot J\right) \cdot \cos \left(\frac{K}{2}\right)}\right)}^{2}}\]

C

double f(double J, double K, double U) {
        double r64106 = -2.0;
        double r64107 = J;
        double r64108 = r64106 * r64107;
        double r64109 = K;
        double r64110 = 2.0;
        double r64111 = r64109 / r64110;
        double r64112 = cos(r64111);
        double r64113 = r64108 * r64112;
        double r64114 = 1.0;
        double r64115 = U;
        double r64116 = r64110 * r64107;
        double r64117 = r64116 * r64112;
        double r64118 = r64115 / r64117;
        double r64119 = pow(r64118, r64110);
        double r64120 = r64114 + r64119;
        double r64121 = sqrt(r64120);
        double r64122 = r64113 * r64121;
        return r64122;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2020045 
(FPCore (J K U)
  :name "Maksimov and Kolovsky, Equation (3)"
  :precision binary64
  (* (* (* -2 J) (cos (/ K 2))) (sqrt (+ 1 (pow (/ U (* (* 2 J) (cos (/ K 2)))) 2)))))

Backtrace

hash-ref: no value found for key key: '(* #<enode 4(66)> #<enode 30(451)>)		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-upwards-no-duplicates/src/core/simplify.rkt	80	4
for-loop	/data/pavpan/nightlies/herbie/simplify-upwards-no-duplicates/src/core/simplify.rkt	76	2
(unnamed)	/data/pavpan/nightlies/herbie/simplify-upwards-no-duplicates/src/core/simplify.rkt	56	0
(unnamed)	/data/pavpan/nightlies/herbie/simplify-upwards-no-duplicates/src/core/simplify.rkt	38	0
simplify!	/data/pavpan/nightlies/herbie/simplify-upwards-no-duplicates/src/mainloop.rkt	224	0
run-improve47	/data/pavpan/nightlies/herbie/simplify-upwards-no-duplicates/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