Exception for _divideComplex, imaginary part

Math

\[\frac{\left(\left(x.im \cdot y.re\right) - \left(x.re \cdot y.im\right)\right)}{\left(\left(y.re \cdot y.re\right) + \left(y.im \cdot y.im\right)\right)}\]

C

double f(double x_re, double x_im, double y_re, double y_im) {
        double r4574995 = x_im;
        double r4574996 = y_re;
        double r4574997 = r4574995 * r4574996;
        double r4574998 = x_re;
        double r4574999 = y_im;
        double r4575000 = r4574998 * r4574999;
        double r4575001 = r4574997 - r4575000;
        double r4575002 = r4574996 * r4574996;
        double r4575003 = r4574999 * r4574999;
        double r4575004 = r4575002 + r4575003;
        double r4575005 = r4575001 / r4575004;
        return r4575005;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 0 
(FPCore (x.re x.im y.re y.im)
  :name "_divideComplex, imaginary part"
  (/.p16 (-.p16 (*.p16 x.im y.re) (*.p16 x.re y.im)) (+.p16 (*.p16 y.re y.re) (*.p16 y.im y.im))))

Backtrace

hash-ref: no value found for key key: '(#<cpointer:posit16> #<cpointer:posit16> #<cpointer:posit16> #<cpointer:posit16>)		L	C
best-and-tied-at-points	/home/p92/nightlies/herbie/optional-posits/src/core/alt-table.rkt	117	0
atab-add-altn	/home/p92/nightlies/herbie/optional-posits/src/core/alt-table.rkt	202	0
for-loop	/home/p92/nightlies/herbie/optional-posits/src/core/alt-table.rkt	56	2
(unnamed)	/opt/racket-7.0/collects/racket/contract/private/arrow-val-first.rkt	388	18
finalize-iter!	/home/p92/nightlies/herbie/optional-posits/src/mainloop.rkt	272	0
run-iter!	/home/p92/nightlies/herbie/optional-posits/src/mainloop.rkt	321	0
for-loop	/home/p92/nightlies/herbie/optional-posits/src/mainloop.rkt	355	4
run-improve43	/home/p92/nightlies/herbie/optional-posits/src/mainloop.rkt	340	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28