% New features added to the 8/91 version of the Delta Toolbox
% -----------------------------------------------------------
%
% 1. 'isstable.m'	A new macro for testing for the stability
%               	of a matrix/vector in the delta domain.
%
% 2. 'delbalre.m'	Altered to ensure the Hankel singular values
%                	of the result are sorted in descending order.
%
% 3. 'del2s.m'  	Added this function which is essentially the
%               	inverse of s2del.m
%
% 4. 'deldamp.m'	Function to compute the damping ratio (in a
%               	continuous time sense) of any poles.
%
% 5. 'selectw.m'	Function to unify automatic selection of
%               	frequencies for delbode, delnic, delnyq
%
% New Features added to the 5/95 version of the Delta Toolbox
% -----------------------------------------------------------
%
% 1. 'delbode.m'        Allowance for the user to specify the
%    'delnic.m'         frequencies to be used, rather than relying
%    'delnyq.m'         on automatic frequency selection always.