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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
//
// 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 d=%b_diag(a,k)
[lhs,rhs]=argn(0)
if rhs==1 then k=0,end
[m,n]=size(a)
if m>1&n>1 then
if k<=0 then
mn=min(m+k,n)
i0=-k+1
else
mn=min(m,n-k)
i0=k*m+1
end
a=matrix(a,m*n,1)
i=i0+((0:mn-1)*(m+1))
d=a(i)
else
nn = max(m,n)+abs(k)
mn=max(m,n)
i=(1:mn)+((1:mn)+(k-1))*nn
d(i)=a
d=matrix(d,nn,nn)
end
endfunction
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