turns

Fixed-point angles modulo 2π, backed by unsigned integers.

Angle<T> represents an angle as an unsigned integer where the full range of T maps onto one full turn (2π radians / 360 degrees). Natural integer overflow provides wraparound at 2π, so modular arithmetic is free.

Type aliases Angle8, Angle16, Angle32, Angle64, and Angle128 cover the standard widths.

Usage

[dependencies]
turns = "0.1"

use turns::Angle8;
use core::f64::consts::PI;

let pi = Angle8::from_radians(PI);
assert_eq!(pi + pi, Angle8::from_radians(0.0_f64));

Features

• std (default) — enables num-traits/std.
• libm — enables num-traits/libm for transcendentals in no_std builds.

For no_std:

[dependencies]
turns = { version = "0.1", default-features = false, features = ["libm"] }

Precision

Float conversions are generic over any F: Float. Expect precision loss when the integer width exceeds the float mantissa (e.g. Angle128 with f64 keeps ~53 of 128 bits). Non-finite inputs (NaN, infinities) are coerced to zero rather than panicking.

License

MIT