Trait float_approx_math::ApproxCos

pub trait ApproxCos {
    // Required method
    fn approx_cos(self) -> Self;
}

Required Methods

fn approx_cos(self) -> Self

Calculates an approximation of a cosine, using the Z80 / ZX Spectrum algorithm.

https://namoseley.wordpress.com/2012/09/26/arduinoavr-and-zx-spectrum-sin-routines/

This approximation is significantly slower than the built-in cos method in the standard library, however this method can be run at compile-time.

Example

#![feature(const_trait_impl)]
 
use float_approx_math::ApproxCos;
 
const X: f32 = 2.0;
let y: f32 = X.approx_cos();

assert!((y - X.cos()).abs() < 0.0000005); // Less than 0.0000005 abs error

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl ApproxCos for f32

fn approx_cos(self) -> Self

impl ApproxCos for f64

fn approx_cos(self) -> Self

Implementors