Yes - if you upgraded to version 1.54 on that particular build of perl it would pass all 5 tests.
On Linux, it's only when $Config{nvsize} exceeds 8 that you'll generally get either test 2 or test 3 (depending upon $Config{nvtype}) to fail with 1.54.
(Note that this particular script doesn't correctly test IBM doubledoubles because I figured it's not going to encounter any of those rare types here.)