Exception for Toniolo and Linder, Equation (2)

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

Math

\[\sin^{-1} \left(\sqrt{\frac{1 - {\left(\frac{Om}{Omc}\right)}^{2}}{1 + 2 \cdot {\left(\frac{t}{\ell}\right)}^{2}}}\right)\]

C

double f(double t, double l, double Om, double Omc) {
        double r17577 = 1.0;
        double r17578 = Om;
        double r17579 = Omc;
        double r17580 = r17578 / r17579;
        double r17581 = 2.0;
        double r17582 = pow(r17580, r17581);
        double r17583 = r17577 - r17582;
        double r17584 = t;
        double r17585 = l;
        double r17586 = r17584 / r17585;
        double r17587 = pow(r17586, r17581);
        double r17588 = r17581 * r17587;
        double r17589 = r17577 + r17588;
        double r17590 = r17583 / r17589;
        double r17591 = sqrt(r17590);
        double r17592 = asin(r17591);
        return r17592;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2020045 
(FPCore (t l Om Omc)
  :name "Toniolo and Linder, Equation (2)"
  :precision binary64
  (asin (sqrt (/ (- 1 (pow (/ Om Omc) 2)) (+ 1 (* 2 (pow (/ t l) 2)))))))

Backtrace

hash-ref: no value found for key key: '(/ #<enode 1556(1556)> #<enode 4(41)>)		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