Struct approx::AbsDiff

pub struct AbsDiff<A, B = A> where
    A: AbsDiffEq<B> + ?Sized,
    B: ?Sized,  {
    pub epsilon: A::Epsilon,
}

The requisite parameters for testing for approximate equality using a absolute difference based comparison.

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

Example

use std::f64;
use approx::AbsDiff;

AbsDiff::default().eq(&1.0, &1.0);
AbsDiff::default().epsilon(f64::EPSILON).eq(&1.0, &1.0);

Fields

epsilon: A::Epsilon

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

Implementations

impl<A, B> AbsDiff<A, B> where
    A: AbsDiffEq<B> + ?Sized,
    B: ?Sized, 

pub fn epsilon(self, epsilon: A::Epsilon) -> AbsDiff<A, B>

Replace the epsilon value with the one specified.

pub fn eq(self, lhs: &A, rhs: &B) -> bool

Peform the equality comparison

pub fn ne(self, lhs: &A, rhs: &B) -> bool

Peform the inequality comparison

Trait Implementations

impl<A, B> Default for AbsDiff<A, B> where
    A: AbsDiffEq<B> + ?Sized,
    B: ?Sized, 

fn default() -> AbsDiff<A, B>

Returns the “default value” for a type.