// Copyright (C) 2016 - 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

//Function for kroneker product of two matrices

#include "kron.h"

void dkrona (double *in1, int row1, int col1, double *in2, int row2, \
			int col2, double *out)
{
	int row1_count, col1_count,row2_count, col2_count;
	int row = row1*row2, col = col1*col2;
	int temp = 0;

	for(col1_count = 0;col1_count < col1; col1_count++)
	{
		for(row1_count = 0;row1_count < row1; row1_count++)
		{
			for(col2_count = 0;col2_count < col2; col2_count++)
			{
				for(row2_count = 0;row2_count < row2; row2_count++)
				{
					temp = (col1_count*col2+col2_count)*row+(row1_count*row2+row2_count);
					out[temp] = in1[col1_count*row1+row1_count]*in2[col2_count*row2+row2_count];
				}
			}			
		}
	}

}