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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA - F. Delebcque , Serge Steer
//
// 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=%st_i_st(varargin)
//insert the struct varargin($-1) into the struct varargin($)
//at position varargin(1), varargin(2),varargin(3),...
//insert the struct varargin($-1) as the field varargin(1)
//of the struct varargin($)
[lhs,rhs]=argn(0)
M=varargin($)
N=varargin($-1)//inserted matrix
dims=double(matrix(M.dims,1,-1));
if type(varargin(1))==10 //addind a new field
flds=getfield(1,M);flds=[flds,varargin(1)];
setfield(1,flds,M);setfield($+1,N,M);
if and(dims==[0 0]) then M.dims=int32([1 1]),end
else //Subscripted assignment between structures
//build resulting struct fields
FM=getfield(1,M);FM=FM(3:$);nFM=size(FM,"*")
FN=getfield(1,N);FN=FN(3:$);nFN=size(FN,"*")
FR=FM;for f=FN, if and(f<>FM) then FR=[FR,f],end,end
Nfields=size(FR,"*")
//computing the dimension of the result
nd=size(dims,"*")
olddims=dims
reduced_index=%f
if rhs-2>nd then //more indices than M number of dims
dims(nd+1:rhs-2)=1;
elseif rhs-2<nd then //less indices than M number of dims
dims=[dims(1:rhs-3) prod(dims(rhs-2:$))]
if size(find(dims>1),"*")>1 then reduced_index=%t,end
end
//convert N-dimensional indexes to 1-D and extend dims if necessary
[Ndims,I]=convertindex(list(dims,double(matrix(N.dims,1,-1))),varargin(1:$-2));Ndims=matrix(Ndims,1,-1)
if reduced_index&or(Ndims<>dims) then error(21),end
if or(Ndims>dims) then
//extend the destination matrix
I1=0
for k=size(Ndims,"*"):-1:1
ik1=(1:dims(k))';
if ik1<>[] then
if Ndims(k)>1 then
if size(I1,"*")>1 then
I1=(Ndims(k)*I1).*.ones(ik1)+ones(I1).*.(ik1-1);
else
I1=Ndims(k)*I1+ik1-1;
end
else
I1=Ndims(k)*I1+ik1-1;
end
end
end
v1=list();for k=1:prod(Ndims),v1(k)=[];end
// create the resulting matrix
R=mlist(["st","dims",matrix(FR,1,-1)],int32(Ndims));
for k=1:size(FR,"*"),setfield(2+k,v1,R),end
// populate it with M entries
for k=1:nFM
v2=v1;
kf=find(FR==FM(k));
w=getfield(k+2,M);
if type(w)<>15 then w=list(w),end
if type(v2)<>15 then v2=list(v2);end
for i=1:size(I1,"*"),
if w<>list() then
v2(I1(i)+1)=w(i);
else
v2(I1(i)+1)=[];
end
end
setfield(kf+2,v2,R);
end
else //the dimension agree
R=M
//does the fields agree?
if or(FR<>FM) then //no
//add new fields
setfield(1,["st","dims",FR],R)
v1=list();for k=1:prod(Ndims),v1(k)=[];end
for k=nFM+1:size(FR,"*")
setfield($+1,v1,R)
end
end
end
//insert N entries into result
for k=1:nFN
kf=find(FR==FN(k));
v2=getfield(kf+2,R);
w=getfield(k+2,N);
if type(w)<>15 then w=list(w),end
if type(v2)<>15 then v2=list(v2);end
for i=1:size(I,"*"),
if w<>list() then
if size(w)==1 then
v2(I(i))=w(1);
else
v2(I(i))=w(i);
end
else
v2(I(i))=[];
end
end
if length(v2)==1 then v2=v2(1);end
setfield(kf+2,v2,R);
end
//remove trailing unitary dimensions
if reduced_index then
Ndims=olddims
else
while Ndims($)==1 then Ndims($)=[],end
select size(Ndims,"*")
case 0 then
Ndims=[1,1]
case 1 then
k=find(olddims<>1&olddims<>0)
if k==[] // M was a scalar
if mtlb_mode() then
Ndims=[1,Ndims]
else
Ndims=[Ndims,1]
end
else // M was a vector
olddims(k)=Ndims
Ndims=olddims;
end
else
Ndims=matrix(Ndims,1,-1)
end
end
R.dims=int32(Ndims)
M=R
end
endfunction
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