(f, *gens, **args)
Compute greatest factorial factorization of ``f``.
Compute greatest factorial factorization of ``f``.
Compute greatest factorial factorization of f .
def gff(f, *gens, **args):
    """Compute greatest factorial factorization of ``f``. """
    raise NotImplementedError('symbolic falling factorial')
def gff ( f , * gens , * * args ) : raise NotImplementedError ( 'symbolic falling factorial' )