qqbar_cos_pi, qqbar_sin_pi, qqbar_tan_pi, qqbar_cot_pi, qqbar_sec_pi, qqbar_csc_pi
Synopsis
#include <flint/qqbar.h>Sets res to \cos(\pi x), \sin(\pi x), \tan(\pi x), \cot(\pi x), \sec(\pi x) or \csc(\pi x) for x = p/q. The functions with an int return value return 1, or 0 if x is a pole. The cosine uses the minimal polynomial of \cos(2 \pi / n) (fmpz_poly_cos_minpoly), and the other functions are reduced to it.
Guides#
Cite this page
The FLINT team, “qqbar_cos_pi, qqbar_sin_pi, qqbar_tan_pi, qqbar_cot_pi, qqbar_sec_pi, qqbar_csc_pi (qqbar.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/qqbar/qqbar_cos_pi.html (generated 2026-10-20).
@misc{flint-doc-qqbar-qqbar-cos-pi,
author = {{The FLINT team}},
title = {{qqbar\_cos\_pi, qqbar\_sin\_pi, qqbar\_tan\_pi, qqbar\_cot\_pi, qqbar\_sec\_pi, qqbar\_csc\_pi (qqbar.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/qqbar/qqbar_cos_pi.html},
note = {Generated 2026-10-20}
}