\[\frac{\log \left(\sqrt{re \cdot re + im \cdot im}\right)}{\log 10}\]

\frac{\log \left(\sqrt{re \cdot re + im \cdot im}\right)}{\log 10}

double f(double re, double im) {
        double r8036 = re;
        double r8037 = r8036 * r8036;
        double r8038 = im;
        double r8039 = r8038 * r8038;
        double r8040 = r8037 + r8039;
        double r8041 = sqrt(r8040);
        double r8042 = log(r8041);
        double r8043 = 10.0;
        double r8044 = log(r8043);
        double r8045 = r8042 / r8044;
        return r8045;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 
(FPCore (re im)
  :name "math.log10 on complex, real part"
  (/ (log (sqrt (+ (* re re) (* im im)))) (log 10.0)))

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