Function: lfunqf
Section: l_functions
C-Name: lfunqf
Prototype: G
Help: lfunqf(Q): returns the Ldata structure associated to the
 theta function of the lattice associated to the definite positive quadratic
 form Q. This function assumes that the associated L function is self-dual,
 but not necessarily the lattice itself. In particular, if Q is
 two-dimensional, then L is always self-dual.
Doc: returns the \kbd{Ldata} structure associated to the $\Theta$ function
 of the lattice associated to the definite positive quadratic form $Q$.
 This function assumes that the associated $L$-function is self-dual,
 but not necessarily the lattice itself. In particular, if $Q$ is
 two-dimensional, then $L$ is always self-dual.
