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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
// Copyright (C) DIGITEO - 2011 - Allan CORNET
//
// 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 [Newdims,I] = convertindex(dims, varargin)
//convert N-D indexes given in varargin to 1-D index.
//if indexes exceed matrix dimensions given in dims, dimensions are
//extented and new dimensions are returned in Newdims
// VC 27/05/2004
// if dims is a list (INSERTION) it contains:
// 1) dims: vector of dimensions of matrix where data are inserted
// 2) Ndims: vector of dimensions of matrix to insert
// else (EXTRACTION) is is a vector (vector of dimensions)
// Modified files: %ce_i_ce.sci %st_i_st.sci %b_i_hm.sci %hm_i_b.sci %hm_i_hm.sci %hm_i_i.sci %hm_i_p.sci %hm_i_s.sci %i_i_hm.sci %p_i_hm.sci
rhs = argn(2);
if rhs < 1 then
error(msprintf(gettext("%s: Wrong number of input argument(s): %d expected.\n"),"convertindex", 1));
end
if type(dims)==15 then // insertion
Ndims=dims(2)
dims=dims(1)
else // extraction
Ndims=[]
end
Newdims=[]
I=0
iimp=0
for k=size(varargin):-1:1
ik=varargin(k)
if type(ik)==2 |type(ik)==129 then // size implicit subscript $...
ik=horner(ik,dims(k)) // explicit subscript
Newdims(k,1)=max(max(ik),dims(k))
elseif type(ik)==4 then // boolean subscript
ik=find(ik)
Newdims(k,1)=max(max(ik),dims(k))
elseif min(size(ik))<0 then // :
if dims(k)<>0 then
ik=1:dims(k)
else
iimp=iimp+1
if iimp<=size(Ndims,"*") then
if isempty(Ndims) then // extraction
ik=[]
else // insertion
if iimp==1 then
single=%t
for kk=1:k-1
if size(varargin(kk),1)==-1|size(varargin(kk),"*")>1 then
single=%f
break
end
end
if single then
ik=1:prod(Ndims),
else
ik=1:Ndims($+1-iimp)
end
else
ik=1:Ndims($+1-iimp)
end
end
else
ik=1
end
end
Newdims(k,1)=max([max(ik),dims(k)])
else //floating point subscript
ik=round(ik)
Newdims(k,1)=max(max(ik),dims(k))
end
if size(ik,"*")>1 then
ik=ik(:)
if size(I,"*")>1 then
I=(Newdims(k)*I).*.ones(ik)+ones(I).*.(ik-1);
else
I=Newdims(k)*I+ik-1;
end
else
I=Newdims(k)*I+ik-1;
end
end
I=I+1
endfunction
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