`acf_approx_inv, acf_approx_div`

Synopsis#include <flint/acf.h>

void acf_approx_inv(acf_t res, const acf_t x, slong prec, arf_rnd_t rnd)source

void acf_approx_div(acf_t res, const acf_t x, const acf_t y, slong prec, arf_rnd_t rnd)source

Set res to an approximation of $1/x$ , respectively $x/y$ . A real or purely imaginary divisor is handled by real divisions of the parts; otherwise $1/(a + bi) = (a - bi)/(a^2 + b^2)$ is used, with $a^2 + b^2$ computed by arf_sosq.

Cite this page

The FLINT team, “acf_approx_inv, acf_approx_div (acf.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/acf/acf_approx_inv.html (generated 2026-11-02).

@misc{flint-doc-acf-acf-approx-inv,
  author       = {{The FLINT team}},
  title        = {{acf\_approx\_inv, acf\_approx\_div (acf.h)}},
  howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
  year         = {2026},
  url          = {https://flintlib.org/doc/acf/acf_approx_inv.html},
  note         = {Generated 2026-11-02}
}

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