void help(void) { printf("dct-test [-i] [<test-number>]\n" "test-number 0 -> test with random matrixes\n" " 1 -> test with random sparse matrixes\n" " 2 -> do 3. test from mpeg4 std\n" "-i test IDCT implementations\n" "-4 test IDCT248 implementations\n"); exit(1); }