If the standard library includes a variant for these or any other functions, it's probably idiomatic to use them. They handle edge cases, are better optimized and they're explicit.
If this is very performance sensitive you can try using the somewhat more obscure (because many people have minimal experience with bitwise operators) `n & 1` instead.
Given an integer input, thare are no "edge cases" to worry about here. If you expect floating point inputs, you need to think carefully about what the correct output should be anyway. A library isn’t going to save you.
(If your "edge case" is that someone might want to know whether a string is even or odd... well, you have other problems.)
If you have a use case where you need to know if you multiplied two large integers and got a result larger than 2^53, then you should do it explicitly before you get to the point of checking if your number is even or odd.