dicom_typecast.m
1ba0b9dff245Bashardoust_SystCoord

dicom_typecast.m
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			function out = dicom_typecast(in, datatype, varargin)
			%DICOM_TYPECAST Convert datatypes, swapping as requested.
			% Y = DICOM_TYPECAST(X, DATATYPE) calls to MATLAB's TYPECAST function
			% and does not swap data endianness.
			%
			% Y = DICOM_TYPECAST(X, DATATYPE, SWAP) calls MATLAB's TYPECAST
			% function and changes the endianness if SWAP is true and leaves the
			% bytes alone otherwise.
			%
			% Note: DATATYPE must be one of 'UINT8', 'INT8', 'UINT16', 'INT16',
			% 'UINT32', 'INT32', 'SINGLE', or 'DOUBLE'.
			%

			% Copyright 1993-2005 The MathWorks, Inc.

			% Determine whether to swap.
			if (nargin == 2)

			swap = false;

			else

			swap = varargin{1};

			end

			% Change the type and swap as required.
			if (swap)

			% Byte-sized inputs need to be swapped after casting. Others
			% should be swapped first.
			switch (class(in))
			case {'uint8', 'int8'}

			out = swapbytes(typecast(in, datatype));

			otherwise

			out = typecast(swapbytes(in), datatype);

			end

			else

			out = typecast(in, datatype);

			end