[−][src]Struct approx::Ulps

pub struct Ulps<A: ?Sized, B = A> where
    A: UlpsEq<B>,
    B: ?Sized,  {
    pub epsilon: A::Epsilon,
    pub max_ulps: u32,
}

The requisite parameters for testing for approximate equality using an ULPs based comparison.

This is not normally used directly, rather via the assert_ulps_{eq|ne}! and ulps_{eq|ne}! macros.

Example

use std::f64;
use approx::Ulps;

Ulps::default().eq(&1.0, &1.0);
Ulps::default().epsilon(f64::EPSILON).eq(&1.0, &1.0);
Ulps::default().max_ulps(4).eq(&1.0, &1.0);
Ulps::default().epsilon(f64::EPSILON).max_ulps(4).eq(&1.0, &1.0);
Ulps::default().max_ulps(4).epsilon(f64::EPSILON).eq(&1.0, &1.0);

Fields

epsilon: A::Epsilon

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

max_ulps: u32

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

Implementations

impl<A: ?Sized, B> Ulps<A, B> where
    A: UlpsEq<B>,
    B: ?Sized, [src]

pub fn epsilon(self, epsilon: A::Epsilon) -> Ulps<A, B>[src]

Replace the epsilon value with the one specified.

pub fn max_ulps(self, max_ulps: u32) -> Ulps<A, B>[src]

Replace the max ulps value with the one specified.

#[must_use]pub fn eq(self, lhs: &A, rhs: &B) -> bool[src]

Peform the equality comparison

#[must_use]pub fn ne(self, lhs: &A, rhs: &B) -> bool[src]

Peform the inequality comparison

Trait Implementations

impl<A: ?Sized, B> Default for Ulps<A, B> where
    A: UlpsEq<B>,
    B: ?Sized, [src]

Auto Trait Implementations

impl<A: ?Sized, B: ?Sized> RefUnwindSafe for Ulps<A, B> where
    <A as AbsDiffEq<B>>::Epsilon: RefUnwindSafe, 

impl<A: ?Sized, B: ?Sized> Send for Ulps<A, B> where
    <A as AbsDiffEq<B>>::Epsilon: Send, 

impl<A: ?Sized, B: ?Sized> Sync for Ulps<A, B> where
    <A as AbsDiffEq<B>>::Epsilon: Sync, 

impl<A: ?Sized, B: ?Sized> Unpin for Ulps<A, B> where
    <A as AbsDiffEq<B>>::Epsilon: Unpin, 

impl<A: ?Sized, B: ?Sized> UnwindSafe for Ulps<A, B> where
    <A as AbsDiffEq<B>>::Epsilon: UnwindSafe, 

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.