Jacob Pratt
0c326ece10
Remove unnecessary safety conditions related to unchecked uint arithmetic Improve the safety documentation of three unsafe APIs related to unsigned integer arithmetic. - [unchecked_add](https://doc.rust-lang.org/nightly/core/primitive.usize.html#method.unchecked_add): It is impossible for `self + rhs < usize::MIN`. - [unchecked_sub](https://doc.rust-lang.org/nightly/core/primitive.usize.html#method.unchecked_sub): It is impossible for `self - rhs > usize::MAX`. - [unchecked_mul](https://doc.rust-lang.org/nightly/core/primitive.usize.html#method.unchecked_mul): It is impossible for `self * rhs < usize::MIN`. The examples use `usize` for demonstration. All unsigned integer types suffer from the same issue because their APIs are generated by the same macro `uint_impl`, and fixing the macro documentation will fix them all.
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