Function: nfdetint
Section: number_fields
C-Name: nfdetint
Prototype: GG
Help: nfdetint(nf,x): multiple of the ideal determinant of the pseudo
 generating set x.
Doc: given a pseudo-matrix $x$, computes a
 nonzero ideal contained in (i.e.~multiple of) the determinant of $x$. This
 is particularly useful in conjunction with \kbd{nfhnfmod}.
