Integer vs Arbitrary Precise Integer Intel HLS

Hello all great people and Anand,

Below is the code snippet. I am using Intel HLS tool. The data type used in below given code is integer. I want to compare the result of integer data type with arbitrary precise integer represented as ac_int <W> in Intel HLS tool through AC data type library of Intel HLS tool. My question is what should be the exact representation of ac_int <W> in terms of 'W' for input arrays, dout, acc, a_reg, sub and sub2 for less latency and less resource utilization.

I want to use the exact code for precise integer type instead of native integer and later compare the results of integer and arbitrary precise data type.

void diff_sq_acc(int a[N], int b[N], int *dout)

{

unsigned char i;

int acc= 0;

int a_reg, b_reg, sub, sub2;

for(i=0; i<N; i++)

{

a_reg = a;

b_reg = b;

sub = a_reg - b_reg;

sub2 = sub*sub;

acc += sub2;

}

*dout = acc;

}