acb_dirichlet_zeta_rs_use_dfloat
Synopsis
#include <flint/acb_dirichlet.h>int acb_dirichlet_zeta_rs_use_dfloatIf nonzero (the default), the main sum of the Riemann–Siegel formula is computed with dfloat_powsum_sieved (double-word arithmetic, see dfloat) when that gives enough accuracy. Set it to 0 to always use acb_dirichlet_powsum_sieved. This is a global variable, which should not be changed while other threads evaluate zeta.
Cite this page
The FLINT team, “acb_dirichlet_zeta_rs_use_dfloat (acb_dirichlet.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/acb_dirichlet/acb_dirichlet_zeta_rs_use_dfloat.html (generated 2026-10-20).
@misc{flint-doc-acb-dirichlet-acb-dirichlet-zeta-rs-use-dfloat,
author = {{The FLINT team}},
title = {{acb\_dirichlet\_zeta\_rs\_use\_dfloat (acb\_dirichlet.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/acb_dirichlet/acb_dirichlet_zeta_rs_use_dfloat.html},
note = {Generated 2026-10-20}
}