Trait approx::ApproxEq

pub trait ApproxEq: Sized {
    type Epsilon;
    fn default_epsilon() -> Self::Epsilon;
    fn default_max_relative() -> Self::Epsilon;
    fn default_max_ulps() -> u32;
    fn relative_eq(
        &self, 
        other: &Self, 
        epsilon: Self::Epsilon, 
        max_relative: Self::Epsilon
    ) -> bool;
    fn ulps_eq(
        &self, 
        other: &Self, 
        epsilon: Self::Epsilon, 
        max_ulps: u32
    ) -> bool;

    fn relative_ne(
        &self, 
        other: &Self, 
        epsilon: Self::Epsilon, 
        max_relative: Self::Epsilon
    ) -> bool { ... }
    fn ulps_ne(
        &self, 
        other: &Self, 
        epsilon: Self::Epsilon, 
        max_ulps: u32
    ) -> bool { ... }
}

Equality comparisons based on floating point tolerances.

Associated Types

type Epsilon

Used for specifying relative comparisons.

Required Methods

fn default_epsilon() -> Self::Epsilon

The default tolerance to use when testing values that are close together.

This is used when no epsilon value is supplied to the relative_eq or ulps_eq macros.

fn default_max_relative() -> Self::Epsilon

The default relative tolerance for testing values that are far-apart.

This is used when no max_relative value is supplied to the relative_eq macro.

fn default_max_ulps() -> u32

The default ULPs to tolerate when testing values that are far-apart.

This is used when no max_relative value is supplied to the relative_eq macro.

fn relative_eq(
    &self,
    other: &Self,
    epsilon: Self::Epsilon,
    max_relative: Self::Epsilon
) -> bool

A test for equality that uses a relative comparison if the values are far apart.

fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

A test for equality that uses units in the last place (ULP) if the values are far apart.

Provided Methods

fn relative_ne(
    &self,
    other: &Self,
    epsilon: Self::Epsilon,
    max_relative: Self::Epsilon
) -> bool

The inverse of ApproxEq::relative_eq.

fn ulps_ne(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

The inverse of ApproxEq::ulps_eq.

Implementations on Foreign Types

impl ApproxEq for f32

type Epsilon = f32

fn default_epsilon() -> f32

fn default_max_relative() -> f32

fn default_max_ulps() -> u32

fn relative_eq(&self, other: &f32, epsilon: f32, max_relative: f32) -> bool

fn ulps_eq(&self, other: &f32, epsilon: f32, max_ulps: u32) -> bool

fn relative_ne(     &self,     other: &Self,     epsilon: Self::Epsilon,     max_relative: Self::Epsilon ) -> bool

fn ulps_ne(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

impl ApproxEq for f64

type Epsilon = f64

fn default_epsilon() -> f64

fn default_max_relative() -> f64

fn default_max_ulps() -> u32

fn relative_eq(&self, other: &f64, epsilon: f64, max_relative: f64) -> bool

fn ulps_eq(&self, other: &f64, epsilon: f64, max_ulps: u32) -> bool

fn relative_ne(     &self,     other: &Self,     epsilon: Self::Epsilon,     max_relative: Self::Epsilon ) -> bool

fn ulps_ne(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

impl<'a, T: ApproxEq> ApproxEq for &'a T

type Epsilon = T::Epsilon

fn default_epsilon() -> Self::Epsilon

fn default_max_relative() -> Self::Epsilon

fn default_max_ulps() -> u32

fn relative_eq(     &self,     other: &&'a T,     epsilon: T::Epsilon,     max_relative: T::Epsilon ) -> bool

fn ulps_eq(&self, other: &&'a T, epsilon: T::Epsilon, max_ulps: u32) -> bool

fn relative_ne(     &self,     other: &Self,     epsilon: Self::Epsilon,     max_relative: Self::Epsilon ) -> bool

fn ulps_ne(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

impl<'a, T: ApproxEq> ApproxEq for &'a mut T

type Epsilon = T::Epsilon

fn default_epsilon() -> Self::Epsilon

fn default_max_relative() -> Self::Epsilon

fn default_max_ulps() -> u32

fn relative_eq(     &self,     other: &&'a mut T,     epsilon: T::Epsilon,     max_relative: T::Epsilon ) -> bool

fn ulps_eq(&self, other: &&'a mut T, epsilon: T::Epsilon, max_ulps: u32) -> bool

fn relative_ne(     &self,     other: &Self,     epsilon: Self::Epsilon,     max_relative: Self::Epsilon ) -> bool

fn ulps_ne(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

Implementors