\[\frac{\tan^{-1}_* \frac{im}{re} \cdot \log base - \log \left(\sqrt{re \cdot re + im \cdot im}\right) \cdot 0.0}{\log base \cdot \log base + 0.0 \cdot 0.0}\]

\frac{\tan^{-1}_* \frac{im}{re} \cdot \log base - \log \left(\sqrt{re \cdot re + im \cdot im}\right) \cdot 0.0}{\log base \cdot \log base + 0.0 \cdot 0.0}

double f(double re, double im, double base) {
        double r8115 = im;
        double r8116 = re;
        double r8117 = atan2(r8115, r8116);
        double r8118 = base;
        double r8119 = log(r8118);
        double r8120 = r8117 * r8119;
        double r8121 = r8116 * r8116;
        double r8122 = r8115 * r8115;
        double r8123 = r8121 + r8122;
        double r8124 = sqrt(r8123);
        double r8125 = log(r8124);
        double r8126 = 0.0;
        double r8127 = r8125 * r8126;
        double r8128 = r8120 - r8127;
        double r8129 = r8119 * r8119;
        double r8130 = r8126 * r8126;
        double r8131 = r8129 + r8130;
        double r8132 = r8128 / r8131;
        return r8132;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (re im base)
  :name "math.log/2 on complex, imaginary part"
  (/ (- (* (atan2 im re) (log base)) (* (log (sqrt (+ (* re re) (* im im)))) 0.0)) (+ (* (log base) (log base)) (* 0.0 0.0))))

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