twiddle

A small library for bit-twiddling.

Documentation

Usage

You can use it by adding this to your Cargo.toml file:

toml [dependencies] twiddle = "1.0"

and adding this to the top of your crate root (main.rs or lib.rs):

```rust extern crate twiddle;

use twiddle::Twiddle; ```

Example

```rust extern crate twiddle;

use twiddle::Twiddle;

struct UnpackedF32 { negative: bool, exponent: i16, fraction: u32, }

impl From for UnpackedF32 { fn from(f: f32) -> UnpackedF32 { let b = unsafe { std::mem::transmute::(f) }; UnpackedF32 { negative: b.bit(31), exponent: (b.bits(30..23) as i16) - 127, fraction: b.bits(22..0) } } }

fn main() { for f in -5..=5 { let u = UnpackedF32::from(f as f32); println!("{:+} = {}1.{:023b} * 2^{}", f, match u.negative { false => "+", true => "-" }, u.fraction, u.exponent ); } } ```

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.