Struct NearMatcher 

pub struct NearMatcher<T: Debug> { /* private fields */ }

Available on crate feature num-traits only.

A matcher which matches floating-point numbers approximately equal to its expected value.

Implementations

impl<T: Debug> NearMatcher<T>

pub fn nans_are_equal(self) -> Self

Configures this instance to treat two NaNs as equal.

This behaviour differs from the IEEE standad for floating point which treats two NaNs as infinitely far apart.

pub fn nans_are_not_equal(self) -> Self

Configures this instance to treat two NaNs as not equal.

This behaviour complies with the IEEE standad for floating point. It is the default behaviour for this matcher, so invoking this method is usually redunant.

Trait Implementations

impl<T: Debug> Describable for NearMatcher<T>

fn describe(&self, matcher_result: MatcherResult) -> Description

Returns a description of self or a negative description if matcher_result is DoesNotMatch.

impl<T: Debug + Float> Matcher<T> for NearMatcher<T>

fn matches(&self, actual: &T) -> MatcherResult

Returns whether the condition matches the datum actual.

fn explain_match(&self, actual: &ActualT) -> Description

Prepares a String describing how the expected value encoded in this instance matches or does not match the given value actual.