A very (not) safe library to check if a number is odd.
Abuses the same bugs and tricks in cve-rs to transmute
the given i8 to a bool without using unsafe.
This relies on a compiler bug, almost certainly doesn't
work on all platforms, and is possibly the least
reasonable is_odd function you could imagine.
See https://www.youtube.com/watch?v=vfMpIsJwpjU&list=PLzl2iy0KCGD6N93omgPEjgakVYA5t-1oV
Example:
use is_odd;