void rr(int A[4], int B[4], int& index1 )
{
#pragma HLS INTERFACE ap_ctrl_none port=return
#pragma HLS INTERFACE axis register both port=B
#pragma HLS INTERFACE axis port=A
#pragma HLS INTERFACE s_axilite port=index1

	static int next1;
	int size=4;
    int i;

    static bool variableInitialized = false;
    int initv=0;

    for (i=0; i<size; i++)
        	B[i]=A[i];

    if(!variableInitialized)
	    next1=initv;
    variableInitialized=true;
    index1=size %(next1+1);


}