bit-iter

Iterate forwards or backwards over the positions of bits set in a word.

A BitIter may be constructed from any integral value, and returns the positions of the 1 bits in ascending order.

BitIter implements DoubleEndedIterator, so you can iterate over the positions of the set bits in descending order too.

Example

```rust fn main() { use bit_iter::*;

let x : u32 = 0x10001;

for b in BitIter::from(x) {
    println!("Bit {} is set.", b);
}

println!("In reverse order:");

for b in BitIter::from(x).rev() {
    println!("Bit {} is set.", b);
}

} ```

Output:

text Bit 0 is set. Bit 16 is set. In reverse order: Bit 16 is set. Bit 0 is set.