Trait ApproxEq

pub trait ApproxEq: Sized {
    type Margin: FloatMargin;

    // Required method
    fn approx_eq<M: Into<Self::Margin>>(self, other: Self, margin: M) -> bool;

    // Provided method
    fn approx_ne<M: Into<Self::Margin>>(self, other: Self, margin: M) -> bool { ... }
}

A trait for approximate equality comparisons.

Required Associated Types

type Margin: FloatMargin

This type type defines a margin within which two values are to be considered approximately equal. It must implement Default so that approx_eq() can be called on unknown types.

Required Methods

fn approx_eq<M: Into<Self::Margin>>(self, other: Self, margin: M) -> bool

This method tests that the self and other values are equal within margin of each other.

Provided Methods

fn approx_ne<M: Into<Self::Margin>>(self, other: Self, margin: M) -> bool

This method tests that the self and other values are not within margin of each other.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl ApproxEq for f32

type Margin = F32Margin

fn approx_eq<M: Into<Self::Margin>>(self, other: f32, margin: M) -> bool

impl ApproxEq for f64

type Margin = F64Margin

fn approx_eq<M: Into<Self::Margin>>(self, other: f64, margin: M) -> bool

impl<T> ApproxEq for &[T]

where T: Copy + ApproxEq,

type Margin = <T as ApproxEq>::Margin

fn approx_eq<M: Into<Self::Margin>>(self, other: Self, margin: M) -> bool

impl<T> ApproxEq for Option<T>

where T: Copy + ApproxEq,

type Margin = <T as ApproxEq>::Margin

fn approx_eq<M: Into<Self::Margin>>(self, other: Self, margin: M) -> bool

Implementors