gr_factor

The unit or content $c$ is an element of the same ring as the input: the sign $-1$, $0$ or $1$ in $\mathbb{Z}$, the sign times the content (as a constant polynomial) in $\mathbb{Z}[x]$, the leading coefficient in $F[x]$. The factors are not sorted in any particular order. flags selects options of the ring's algorithm; 0 gives the default. Implemented for $\mathbb{Z}$, $\mathbb{Q}$, multivariate polynomials and rational functions over $\mathbb{Z}$ and $\mathbb{Q}$, and univariate polynomials (gr_ctx_init_gr_poly, gr_ctx_init_fmpz_poly) over $\mathbb{Z}$, $\mathbb{Z}/p\mathbb{Z}$, finite fields, algebraic numbers (qqbar, ca) and complex balls and floating-point numbers, the last ones by root-finding. Other rings return GR_UNABLE.