FLINT3.7.0-dev
/

arb_rsqrt, arb_rsqrt_ui

Synopsis#include <flint/arb.h>
void arb_rsqrt(arb_t z, const arb_t x, slong prec)source
void arb_rsqrt_ui(arb_t z, ulong x, slong prec)source

Set z to 1/\sqrt{x}. At high precision this is faster than computing a square root.

Guides#

Cite this page

The FLINT team, “arb_rsqrt, arb_rsqrt_ui (arb.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/arb/arb_rsqrt.html (generated 2026-10-20).