function B = repmat(A,varargin)

%REPMAT Replicate and tile an array.

%   B = repmat(A,M,N) creates a large matrix B consisting of an M-by-N

%   tiling of copies of A. The size of B is [size(A,1)*M, size(A,2)*N].

%   The statement repmat(A,N) creates an N-by-N tiling.

%

%   B = REPMAT(A,[M N]) accomplishes the same result as repmat(A,M,N).

%

%   B = REPMAT(A,[M N P ...]) tiles the array A to produce a

%   multidimensional array B composed of copies of A. The size of B is

%   [size(A,1)*M, size(A,2)*N, size(A,3)*P, ...].

%

%   REPMAT(A,M,N) when A is a scalar is commonly used to produce an M-by-N

%   matrix filled with A's value and having A's CLASS. For certain values,

%   you may achieve the same results using other functions. Namely,

%      REPMAT(NAN,M,N)           is the same as   NAN(M,N)

%      REPMAT(SINGLE(INF),M,N)   is the same as   INF(M,N,'single')

%      REPMAT(INT8(0),M,N)       is the same as   ZEROS(M,N,'int8')

%      REPMAT(UINT32(1),M,N)     is the same as   ONES(M,N,'uint32')

%      REPMAT(EPS,M,N)           is the same as   EPS(ONES(M,N))

%

%   Example:

%       repmat(magic(2), 2, 3)

%       repmat(uint8(5), 2, 3)

%

%   Class support for input A:

%      float: double, single

%      integer: uint8, int8, uint16, int16, uint32, int32, uint64, int64

%      char, logical

%

%   See also BSXFUN, MESHGRID, ONES, ZEROS, NAN, INF.

%   Copyright 1984-2013 The MathWorks, Inc.

if nargin < 2 

    error(message('MATLAB:minrhs'))

elseif nargin == 2 

    M = varargin{1};

    if isscalar(M)

        siz = [M M];

    elseif isempty(M)

        siz = [1 1];

        warning(message('MATLAB:repmat:emptyReplications'));

    elseif isrow(M)

        siz = M;

    else

        error(message('MATLAB:repmat:invalidReplications'));

    end

    siz = double(siz);

else % nargin > 2 

    if ~all(cellfun(@isscalar,varargin)) 

        if nargin == 3  % this code maintains backward compatibility

            M = varargin{1};

            N = varargin{2};

            if (isrow(M) && size(M,2)>1 && (isrow(N) || isempty(N))) || ...

                    (isrow(M) && size(M,2)>0 && isrow(N) && size(N,2)>1)

                siz = [M N];

                warning(message('MATLAB:repmat:rowReplications'));

            elseif isempty(N) && numel(M) <= 1

                siz = [M 1 1];

                warning(message('MATLAB:repmat:emptyReplications'));

            else

                error(message('MATLAB:repmat:invalidReplications'));

            end

        else

            error(message('MATLAB:repmat:invalidReplications'));

        end

    else 

        siz = cellfun(@(x)double(full(x)),varargin); 

    end 

end 

if isscalar(A) && ~isobject(A) 

    nelems = prod(siz); 

    if nelems>0 && nelems < (2^31)-1 % use linear indexing for speed. 

        % Since B doesn't exist, the first statement creates a B with

        % the right size and type.  Then use scalar expansion to

        % fill the array. Finally reshape to the specified size.

        B(nelems) = A; 

        if ~isequal(B(1), B(nelems)) || ~(isnumeric(A) || islogical(A)) 

            % if B(1) is the same as B(nelems), then the default value filled in for

            % B(1:end-1) is already A, so we don't need to waste time redoing

            % this operation. (This optimizes the case that A is a scalar zero of

            % some class.)

            B(:) = A; 

        end 

        B = reshape(B,siz); 

    elseif all(siz > 0) % use general indexing, cost of memory allocation dominates.

        ind = num2cell(siz);

        B(ind{:}) = A;

        if ~isequal(B(1), B(ind{:})) || ~(isnumeric(A) || islogical(A))

            B(:) = A;

        end

    else

        B = A(ones(siz));

    end

elseif ismatrix(A) && numel(siz) == 2 

    [m,n] = size(A); 

    if (m == 1 && siz(2) == 1) 

        B = A(ones(siz(1), 1), :); 

    elseif (n == 1 && siz(1) == 1)

        B = A(:, ones(siz(2), 1));

    else

        mind = (1:m)';

        nind = (1:n)';

        mind = mind(:,ones(1,siz(1)));

        nind = nind(:,ones(1,siz(2)));

        B = A(mind,nind);

    end

else

    Asiz = size(A);

    Asiz = [Asiz ones(1,length(siz)-length(Asiz))];

    siz = [siz ones(1,length(Asiz)-length(siz))];

    subs = cell(1,length(Asiz));

    for i=length(Asiz):-1:1

        ind = (1:Asiz(i))';

        subs{i} = ind(:,ones(1,siz(i)));

    end

    B = A(subs{:});

end