the role of static int j in Dataflow/Bypassing/input_bypass/dut_sol.cpp ?

[3togo]

What is the objective of adding static int j; in functions add_kernel, Double_pass and pass?

Intuitively, it might be used as a global counter. If so, how to use it? Also, why not declare it as a global variable outside these functions. What have I missed?

void add_kernel(int tmp1[128], int tmp2[128], int tmp3[128])
{
    static int j;

    int buff[127];
    for(int i=0;i<128;i++)
    {
        j++;
        tmp3[i] = tmp1[i] +tmp2[i];
    }

}

void Double_pass(int tmp2[128], int tmp1[128], int tmp4[128], int tmp5[128])
{
    static int j;

    int buff[127];
    for(int i=0;i<128;i++)
    {
        j++;
        tmp4[i] = tmp1[i];
        tmp5[i] = tmp2[i];
    }

}

void pass(int a[128], int b[128],int tmp1[128], int tmp2[128])
{
    static int j;
    for(int i=0;i<128;i++)
    {
        j++;
        tmp1[i]= a[i];
        tmp2[i] = b[i];
    }

}

void dut(int a[128], int b[128], int tmp3[128])
{
#pragma HLS DATAFLOW

int tmp1[128],tmp2[128], tmp4[128];
int tmp5[128];
    pass(a,b,tmp1,tmp2);
    Double_pass(tmp2,tmp1, tmp4, tmp5);
    add_kernel(tmp4,tmp5,tmp3);
}

[ramanan-radhakrishnan]

Yes, as you suspected there was no reason for the static int j variable. It has been removed. Thanks for reporting it.

[ramanan-radhakrishnan]

Closing this issue.