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function outsize = FA_SZ_DIFF(in1size, in2val, in3val)
//function outsize = FA_SZ_DIFF(in1size, in2val, in3val)
// -----------------------------------------------------------------
// Get size of output for diff function
//
// Input data:
// in1size: string specifying the size of first input argument.
// in2val: string specifying the value of second input argument.
// in3val: string specifying the value of third input argument.
//
// Output data:
// outsize: string containing the size for output argument.
//
// Copyright (C) 2017 - IIT Bombay - FOSSEE
//
// 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
// Author: Siddhesh Wani
// Organization: FOSSEE, IIT Bombay
// Email: toolbox@scilab.in
//
// -----------------------------------------------------------------
// ------------------------------
// --- Check input arguments. ---
// ------------------------------
SCI2CNInArgCheck(argn(3),3,3);
in1size = string(in1size);
in1row = eval(in1size(1));
in1col = eval(in1size(2));
in2val = string(in2val);
in2num = eval(in2val);
in3num = eval(in3val);
if(in3num == 0)
if((in1row == 1) & (in1col <> 1)) //input is row vector
outsize(1) = '1';
outsize(2) = string (in1col - in2num);
elseif((in1col == 1) & (in1row <> 1)) //input is column vector
outsize(1) = string(in1row - in2num);
outsize(2) = '1';
else // input is matrix. output is a column matrix
outsize(1) = string((in1row * in1col)- in2num);
outsize(2) = '1';
end
elseif (in3num == 1) //Difference along rows
outsize(1) = string(in1row - in2num);
outsize(2) = string(in1col);
elseif (in3num == 2) //Difference along columns
outsize(1) = string(in1row);
outsize(2) = string(in1col - in2num);
end
endfunction
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