Trait FloatConst 

pub trait FloatConst {
    const HALF: Self;
    const E: Self;
    const PI: Self;
    const THREE: Self;
    const TWOPI: Self;
    const FOURPI: Self;
    const POINT_TWO: Self;
    const FRAC_1_SQRT_2: Self;
}

constant values for floating point data types

Required Associated Constants

const HALF: Self

0.5

const E: Self

e

const PI: Self

π

const THREE: Self

3.0

const TWOPI: Self

2π

const FOURPI: Self

4π

const POINT_TWO: Self

0.2

const FRAC_1_SQRT_2: Self

1/√2

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FloatConst for f32

const HALF: Self = 0.5

const E: Self = f32::consts::E

const PI: Self = f32::consts::PI

const THREE: Self = 3.0

const TWOPI: Self

const FOURPI: Self

const POINT_TWO: Self = 0.2

const FRAC_1_SQRT_2: Self = f32::consts::FRAC_1_SQRT_2

impl FloatConst for f64

const HALF: Self = 0.5

const E: Self = std::f64::consts::E

const PI: Self = std::f64::consts::PI

const THREE: Self = 3.0

const TWOPI: Self

const FOURPI: Self

const POINT_TWO: Self = 0.2

const FRAC_1_SQRT_2: Self = std::f64::consts::FRAC_1_SQRT_2

impl FloatConst for bf16

const HALF: Self

const E: Self

const PI: Self

const THREE: Self

const TWOPI: Self

const FOURPI: Self

const POINT_TWO: Self

const FRAC_1_SQRT_2: Self

impl FloatConst for f16

const HALF: Self

const E: Self

const PI: Self

const THREE: Self

const TWOPI: Self

const FOURPI: Self

const POINT_TWO: Self

const FRAC_1_SQRT_2: Self

Implementors