Comment by kibwen
9 hours ago
> I tested it was working by counting the bits and someone critizised it for not using popcount
PSA: Rust exposes the popcnt intrinsic via the `count_ones` method on integer types: https://doc.rust-lang.org/std/primitive.u32.html#method.coun...
Looks like that was added about 3 years after I wrote my test code.
According to the docs there, it was stabilized in 1.0, then stabilized in const contexts in 1.32. Were you testing this in 2012?
Maybe I was wrong, when I look it up it said it came in in 2020. 1.4something.