Exception for Toniolo and Linder, Equation (2)

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 r8066 = 1.0;
        double r8067 = Om;
        double r8068 = Omc;
        double r8069 = r8067 / r8068;
        double r8070 = 2.0;
        double r8071 = pow(r8069, r8070);
        double r8072 = r8066 - r8071;
        double r8073 = t;
        double r8074 = l;
        double r8075 = r8073 / r8074;
        double r8076 = pow(r8075, r8070);
        double r8077 = r8070 * r8076;
        double r8078 = r8066 + r8077;
        double r8079 = r8072 / r8078;
        double r8080 = sqrt(r8079);
        double r8081 = asin(r8080);
        return r8081;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (t l Om Omc)
  :name "Toniolo and Linder, Equation (2)"
  (asin (sqrt (/ (- 1.0 (pow (/ Om Omc) 2.0)) (+ 1.0 (* 2.0 (pow (/ t l) 2.0)))))))

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