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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
// Copyright (C) 2011 - DIGITEO - Michael Baudin
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
//
function [M, sel] = pack(M, blocksizes)
//
// Check input arguments
[lhs, rhs] = argn();
if rhs <> 2 then
error(msprintf(gettext("%s: Wrong number of input argument: %d expected.\n"),"pack",2));
end
//
// Check type
if and(typeof(M) <> ["constant" "sparse"]) then
error(msprintf(gettext("%s: Wrong type for argument #%d: Real matrix or sparse matrix expected.\n"),"pack",1));
end
if typeof(blocksizes) <> "constant" then
error(msprintf(gettext("%s: Wrong type for argument #%d: Real matrix expected.\n"),"pack",2));
end
//
// Check content
if ~isreal(M) then
error(msprintf(gettext("%s: Wrong type for argument #%d: Real matrix expected.\n"),"pack",1));
end
if ~isreal(blocksizes) then
error(msprintf(gettext("%s: Wrong type for argument #%d: Real matrix expected.\n"),"pack",2));
end
if or(blocksizes<1) then
error(msprintf(gettext("%s: Wrong value for input argument #%d: Non-negative integers expected.\n"),"pack",2));
end
if or(blocksizes<>floor(blocksizes)) then
error(msprintf(gettext("%s: Wrong value for input argument #%d: An integer value expected.\n"),"pack",2));
end
//
// Proceed...
sel = []
kk = 0
blocksizes = matrix(blocksizes, 1, size(blocksizes,"*"))
for ni=blocksizes
k = kk
for j=1:ni
sel = [sel, k+(j:ni)]
k = k+ni
end
kk = kk+ni*ni
end
M = M(sel, :)
endfunction
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