Test for overflow when negating the largest negative signed int.
If the test passes, you'll see a series of PASS messages below.
PASS: x should be 2147483648 and is.
PASS: y should be 2147483648 and is.
Test for overflow when negating the largest negative signed int.
If the test passes, you'll see a series of PASS messages below.
PASS: x should be 2147483648 and is.
PASS: y should be 2147483648 and is.