FLINT3.7.0-dev

qfb_is_principal_form

Synopsis#include <flint/qfb.h>
int qfb_is_principal_form(qfb_t f, fmpz_t D)source

Returns 1 if f is the reduced principal form of discriminant D (the identity of the class group, for reduced f), otherwise 0.

Cite this page

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