45 #define check(condition, message) do {                  \  macro
146                 check(f != NULL, "fopen w");  in main()
153                         check(ret == per_op, "fwrite ordered");  in main()
162                         check(ret == per_op, "fwrite random");  in main()
170                 check(f != NULL, "fopen r");  in main()
174                         check(ret == per_op, "fread ordered");  in main()
183                         check(ret == per_op, "fread random");  in main()
202     check(f != NULL, "fopen w+");  in main()
207     check(ret == BUF_SIZE, "fwrite mixed setup");  in main()
222             check(ret == (size_t) write_len, "fwrite mixed");  in main()
237             check(ret == (size_t) read_len, "fread mixed");  in main()