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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) XXXX-2008 - INRIA
// Copyright (C) 2010 - 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-en.txt
function A=adj2sp(varargin)
// adjacency to sparse conversion.
// See adj2sp.xml for help.
//
// Check number of arguments
[lhs, rhs] = argn()
if ( and(rhs <> [3 4]) ) then
lstr = gettext("%s: Wrong number of input arguments: %d to %d expected.\n")
error ( msprintf(lstr,"adj2sp",3,4))
end
if ( and(lhs <> [0 1]) ) then
lstr = gettext("%s: Wrong number of output arguments: %d to %d expected.\n")
error ( msprintf(lstr,"adj2sp",0,1))
end
//
// Get arguments
xadj = varargin(1)
iadj = varargin(2)
v = varargin(3)
//
// Get size of the matrix
if ( rhs == 3 ) then
m = max(iadj)
n = size(xadj,"*")-1
mn = [m,n]
else
mn = varargin(4)
end
//
// Check type of arguments
if ( typeof(xadj) <> "constant" ) then
lstr = gettext("%s: Wrong type for input argument #%d.\n")
error ( msprintf(lstr,"adj2sp",1))
end
if ( typeof(iadj) <> "constant" ) then
lstr = gettext("%s: Wrong type for input argument #%d.\n")
error ( msprintf(lstr,"adj2sp",2))
end
if ( typeof(mn) <> "constant" ) then
lstr = gettext("%s: Wrong type for input argument #%d.\n")
error ( msprintf(lstr,"adj2sp",3))
end
//
// Check size of arguments
if ( size(mn,"*") <> 2 ) then
lstr = gettext("%s: Wrong size for input argument #%d: %s has size %d, but %d is expected.\n")
error ( msprintf(lstr,"adj2sp",4,"mn",size(mn,"*"),2))
end
//
// Check content of arguments
if ( mn(1) < 0 ) then
lstr = gettext("%s: Wrong value for input argument #%d: %s=%d, but a positive value is expected.\n")
error ( msprintf(lstr,"adj2sp",4,"mn(1)",mn(1)))
end
if ( mn(2) < 0 ) then
lstr = gettext("%s: Wrong value for input argument #%d: %s=%d, but a positive value is expected.\n")
error ( msprintf(lstr,"adj2sp",4,"mn(2)",mn(2)))
end
if ( int(mn(1)) <> mn(1) ) then
lstr = gettext("%s: Wrong value for input argument #%d: %s=%s, but a floating point integer is expected.\n")
error ( msprintf(lstr,"adj2sp",4,"mn(1)",string(mn(1))))
end
if ( int(mn(2)) <> mn(2) ) then
lstr = gettext("%s: Wrong value for input argument #%d: %s=%s, but a floating point integer is expected.\n")
error ( msprintf(lstr,"adj2sp",4,"mn(2)",string(mn(2))))
end
if ( mn(1) <> max(iadj) ) then
lstr = gettext("%s: Wrong value for input argument #%d: %s=%d, which does not match %s: %d.\n")
error ( msprintf(lstr,"adj2sp",4,"mn(1)",mn(1),"max(iadj)",max(iadj)))
end
if ( mn(2) <> size(xadj,"*")-1 ) then
lstr = gettext("%s: Wrong value for input argument #%d: %s=%d, which does not match size of %s: %d.\n")
error ( msprintf(lstr,"adj2sp",4,"mn(2)",mn(2),"xadj",size(xadj,"*")))
end
//
// Make xadj, iadj, mn column matrices
xadj = xadj(:)
iadj = iadj(:)
mn = mn(:)
//
// Proceed...
nza = size(iadj,"*")
j = fadj2sp(xadj,mn(2),nza)
A = sparse([j,iadj],v,[mn(2),mn(1)])'
endfunction
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