_nfloat_vec_dot, _nfloat_vec_dot_rev
Synopsis
#include <flint/nfloat.h>int _nfloat_vec_dot(nfloat_ptr res, nfloat_srcptr initial, int subtract, nfloat_srcptr x, nfloat_srcptr y, slong len, gr_ctx_t ctx)sourceint _nfloat_vec_dot_rev(nfloat_ptr res, nfloat_srcptr initial, int subtract, nfloat_srcptr x, nfloat_srcptr y, slong len, gr_ctx_t ctx)sourceSet res to (or with reversed), where is initial (zero if NULL) and the sign is negative if subtract is nonzero. The sum is accumulated in fixed point with one guard word after a pass that finds the largest exponent, so the result has an error of a few ulps relative to the largest term rather than one rounding per term; with directed rounding it is a valid bound. See Dot products.
Guides#
Cite this page
The FLINT team, “_nfloat_vec_dot, _nfloat_vec_dot_rev (nfloat.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/nfloat/_nfloat_vec_dot.html (generated 2026-11-02).
@misc{flint-doc-nfloat-nfloat-vec-dot,
author = {{The FLINT team}},
title = {{\_nfloat\_vec\_dot, \_nfloat\_vec\_dot\_rev (nfloat.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/nfloat/_nfloat_vec_dot.html},
note = {Generated 2026-11-02}
}