  'PR'        Polak-Ribiere 
%    'HS'        Hestenes-Stiefel
%    'SD'        Steepest Decsent
%
%  RestartIters  Number of iterations to run before conjugate direction restart {20}
%
%  RestartNW     Flag to use restart heuristic of Nocedal and Wright {false}
%
%  RestartNWTol  Tolerance for Nocedal and Wright restart heuristic {0.1}
%%
%
% <html><hr></html>
%% Default Input Parameters
% The default input parameters are returned with the following call to
% |ncg|:
params = ncg('defaults')
%%
% 
% See the