SparseUnPack.m

% SparseUnPack - Unpacks an array of bytes, representing a packed sparse.
%
% Usage: C = SparseUnPack(B);
%
%  B is a packed sparse type, of uint8
%  C is a sparse matrix
%  If B is a sparse matrix, B is returned without error.
%
%  If B is stored as a format other than double, the values are converted
%  double. 
%
%  Some sanity checing is done if the packed array can be unpacked on the 
%  current system, i.e. when unpacking an array on a 32 bit machine when
%  the dimensions are larger than 2^32.
%
%  This program only works on Little Endian machines!
%
%  Compile with -D_DEBUG_ for some debugging information:
%   mex -largeArrayDims SparsePack.c [-D_DEBUG_]
%   mex -largeArrayDims SparseUnPack.c [-D_DEBUG_]
%
% (c) Sebastiaan Breedveld, 2009
%
%