qfrep of binary forms

[Ariel Pacetti <apacetti@math.utexas.edu>]

Is there an easy way to compute the numbers represented by a binary 
quadratic form?

qfrem and qfminim do not accept a binary quadratic form (as output from 
Qfb) as input and there is no implemented routine to transform a binary 
quadratic form into a 2 by 2 matrix (the only solution I found is to 
compute Vec() and construct the matrix from this, although there maight be 
a better one).
Bests,

Ariel