bitm is the Rust library by Piotr Beling for bit and bitmap (bit vector) manipulation.

Example

```rust use bitm::{BitAccess, BitVec, BitArrayWithRank, ArrayWithRank101111};

let mut b = Box::<[u64]>::withzeroedbits(2048); // b can store 2048 bits asserteq!(b.getbit(100), false); // b is zeroed so bit at index 100 is not set
b.setbit(100); // set the bit asserteq!(b.getbit(100), true); // now it is set asserteq!(b.get_bits(99, 5), 0b00010); // 5 bits, beginning from index 99, should be 00010

let (r, ones) = ArrayWithRank101111::build(b); asserteq!(ones, 1); // one bit is set in b asserteq!(r.rank(100), 0); // no ones in the first 100 bits of b asserteq!(r.rank(101), 1); // 1 one in the first 101 bits of b asserteq!(r.rank(999), 1); // 1 one in the first 999 bits of b ```