228         uint64_t psnr;  in run_psnr()  local
231             psnr = ((2 * log16(max << 16) + log16(i) - log16(sse)) *  in run_psnr()
234             psnr = 1000 * F - 1; // floating point free infinity :)  in run_psnr()
238                (int)(psnr / F), (int)(psnr % F),  in run_psnr()
240         return psnr;  in run_psnr()
245         double psnr = INT_MAX;  in run_psnr()  local
250             psnr = 2 * log(DBL_MAX) - log(i / sse_d);  in run_psnr()
251             snprintf(psnr_str, sizeof(psnr_str), "%5.02f", psnr);  in run_psnr()
259         return psnr;  in run_psnr()
312         int psnr = run_psnr(f, len, shift, skip_bytes);  in main()  local
313         if (psnr > max_psnr || (shift < 0 && psnr == max_psnr)) {  in main()
314             max_psnr = psnr;  in main()