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 r8193 = 1.0;
        double r8194 = Om;
        double r8195 = Omc;
        double r8196 = r8194 / r8195;
        double r8197 = 2.0;
        double r8198 = pow(r8196, r8197);
        double r8199 = r8193 - r8198;
        double r8200 = t;
        double r8201 = l;
        double r8202 = r8200 / r8201;
        double r8203 = pow(r8202, r8197);
        double r8204 = r8197 * r8203;
        double r8205 = r8193 + r8204;
        double r8206 = r8199 / r8205;
        double r8207 = sqrt(r8206);
        double r8208 = asin(r8207);
        return r8208;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019179 
(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

result arity mismatch; expected number of values not received expected: 2 received: 1 in: local-binding form values...: 0		L	C
loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/extraction.rkt	25	2
(unnamed)	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	26	0
simplify!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	217	0
run-improve43	/data/pavpan/nightlies/herbie/various-cleanup/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