e^{\log \left(\sqrt{x.re \cdot x.re + x.im \cdot x.im}\right) \cdot y.re - \tan^{-1}_* \frac{x.im}{x.re} \cdot y.im} \cdot \cos \left(\log \left(\sqrt{x.re \cdot x.re + x.im \cdot x.im}\right) \cdot y.im + \tan^{-1}_* \frac{x.im}{x.re} \cdot y.re\right)e^{\left(\left(\sqrt[3]{y.re} \cdot \sqrt[3]{y.re}\right) \cdot \left(1 \cdot \log \left(\mathsf{hypot}\left(x.re, x.im\right)\right)\right)\right) \cdot \sqrt[3]{y.re} - \left(\sqrt[3]{\sqrt[3]{\tan^{-1}_* \frac{x.im}{x.re}} \cdot \sqrt[3]{\tan^{-1}_* \frac{x.im}{x.re}}} \cdot {\left(\sqrt[3]{\sqrt[3]{\tan^{-1}_* \frac{x.im}{x.re}}}\right)}^{4}\right) \cdot \left(\sqrt[3]{\tan^{-1}_* \frac{x.im}{x.re}} \cdot y.im\right)}double f(double x_re, double x_im, double y_re, double y_im) {
double r16587 = x_re;
double r16588 = r16587 * r16587;
double r16589 = x_im;
double r16590 = r16589 * r16589;
double r16591 = r16588 + r16590;
double r16592 = sqrt(r16591);
double r16593 = log(r16592);
double r16594 = y_re;
double r16595 = r16593 * r16594;
double r16596 = atan2(r16589, r16587);
double r16597 = y_im;
double r16598 = r16596 * r16597;
double r16599 = r16595 - r16598;
double r16600 = exp(r16599);
double r16601 = r16593 * r16597;
double r16602 = r16596 * r16594;
double r16603 = r16601 + r16602;
double r16604 = cos(r16603);
double r16605 = r16600 * r16604;
return r16605;
}
double f(double x_re, double x_im, double y_re, double y_im) {
double r16606 = y_re;
double r16607 = cbrt(r16606);
double r16608 = r16607 * r16607;
double r16609 = 1.0;
double r16610 = x_re;
double r16611 = x_im;
double r16612 = hypot(r16610, r16611);
double r16613 = log(r16612);
double r16614 = r16609 * r16613;
double r16615 = r16608 * r16614;
double r16616 = r16615 * r16607;
double r16617 = atan2(r16611, r16610);
double r16618 = cbrt(r16617);
double r16619 = r16618 * r16618;
double r16620 = cbrt(r16619);
double r16621 = cbrt(r16618);
double r16622 = 4.0;
double r16623 = pow(r16621, r16622);
double r16624 = r16620 * r16623;
double r16625 = y_im;
double r16626 = r16618 * r16625;
double r16627 = r16624 * r16626;
double r16628 = r16616 - r16627;
double r16629 = exp(r16628);
return r16629;
}



Bits error versus x.re



Bits error versus x.im



Bits error versus y.re



Bits error versus y.im
Results
Initial program 33.2
Taylor expanded around 0 19.9
rmApplied add-cube-cbrt19.9
Applied associate-*r*19.9
Simplified4.0
rmApplied add-cube-cbrt4.0
Applied associate-*l*4.0
rmApplied add-cube-cbrt4.0
Applied cbrt-prod4.0
Applied associate-*l*4.0
Simplified4.0
Final simplification4.0
herbie shell --seed 2020059 +o rules:numerics
(FPCore (x.re x.im y.re y.im)
:name "powComplex, real part"
:precision binary64
(* (exp (- (* (log (sqrt (+ (* x.re x.re) (* x.im x.im)))) y.re) (* (atan2 x.im x.re) y.im))) (cos (+ (* (log (sqrt (+ (* x.re x.re) (* x.im x.im)))) y.im) (* (atan2 x.im x.re) y.re)))))