%SIGN Signum function for gpuArray
%   Y = SIGN(X)
%   
%   Example:
%    
%       N = 1000;
%       D = gpuArray.colon(1, N) - ceil(N/2)
%       E = sign(D)
%   
%   See also SIGN, GPUARRAY, GPUARRAY/COLON, GPUARRAY/ZEROS.


%   Copyright 2006-2010 The MathWorks, Inc.
