function a = uplus(a)
%UPLUS        Gradient unary plus  + a
%

% written  10/16/98     S.M. Rump
% modified 12/18/02     S.M. Rump  performance improved
% modified 04/04/04     S.M. Rump  set round to nearest for safety
% modified 04/06/05     S.M. Rump  rounding unchanged
%

