/*******************************************************************************
Vendor: Xilinx
Associated Filename: window_fn_test.cpp
Purpose: Vivado HLS tutorial example
Revision History: March 13, 2012 - initial release
*******************************************************************************
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#include <iostream>
#include <iomanip>
using namespace std;
#include "window_fn_top.h"
#ifdef FLOAT_DATA
#define ABS_ERR_THRESH 0.0
#else
#define ABS_ERR_THRESH 0.001
#endif
#define WINDOW_FN_DEBUG 1
int main(void)
{
win_fn_in_t testdata[WIN_LEN];
win_fn_out_t hw_result[WIN_LEN];
float sw_result[WIN_LEN];
unsigned err_cnt = 0;
// Generate test vectors and expected (real valued) results
for (int i = 0; i < WIN_LEN; i++) {
float samp_i = 64.0;
// Use the coefficient calculation function from class for convenience
float win_i = xhls_window_fn::coef_calc<WIN_LEN,WIN_TYPE>(i);
testdata[i] = samp_i; // implicit conversion from float to ap_fixed<>
sw_result[i] = samp_i * win_i; // generate floating point expected values
}
// Run the DUT
window_fn_top(hw_result, testdata);
// Check results
cout << "Checking results against a tolerance of " << ABS_ERR_THRESH << endl;
cout << fixed << setprecision(5);
for (unsigned i = 0; i < WIN_LEN; i++) {
float abs_err = float(hw_result[i]) - sw_result[i];
#if WINDOW_FN_DEBUG
cout << "i = " << i << "\thw_result = " << hw_result[i];
cout << "\t sw_result = " << sw_result[i] << endl;
#endif
if (fabs(abs_err) > ABS_ERR_THRESH) {
cout << "Error threshold exceeded: i = " << i;
cout << " Expected: " << sw_result[i];
cout << " Got: " << hw_result[i];
cout << " Delta: " << abs_err << endl;
err_cnt++;
}
}
cout << endl;
// Print final status message
if (err_cnt) {
cout << "!!! TEST FAILED - " << err_cnt;
cout << " results out of tolerance." << endl;
} else
cout << "Test Passed" << endl;
// Only return 0 on success
return err_cnt;
}
