integer-overflow-or-underflow detector

[jgcrosta]

To explicitly handle the possibility of overflow, you can use these families of methods provided by the standard library for primitive numeric types:

• Wrap in all modes with the wrapping_* methods, such as wrapping_add.
• Return the None value if there is overflow with the checked_* methods.
• Return the value and a boolean indicating whether there was overflow with the overflowing_* methods.
• Saturate at the value’s minimum or maximum values with the saturating_* methods.

Reference: https://doc.rust-lang.org/book/ch03-02-data-types.html#integer-overflow