FLINT3.7.0-dev

dirichlet_parity_ui, dirichlet_parity_char

Synopsis#include <flint/dirichlet.h>
int dirichlet_parity_ui(const dirichlet_group_t G, ulong a)source
int dirichlet_parity_char(const dirichlet_group_t G, const dirichlet_char_t x)source

Return the parity λ∈{0,1}\lambda \in \{0, 1\} of χq(a,⋅)\chi_q(a, \cdot), defined by χ(−1)=(−1)λ\chi(-1) = (-1)^\lambda: 0 for even and 1 for odd characters.

Guides#

Cite this page

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