approx

Struct AbsDiff

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

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);

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§epsilon: A::Epsilon

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

Implementations§

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

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

Replace the epsilon value with the one specified.

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

Peform the equality comparison

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

Peform the inequality comparison

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

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

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<A, B> Freeze for AbsDiff<A, B>
where <A as AbsDiffEq<B>>::Epsilon: Freeze, A: ?Sized, B: ?Sized,

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

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

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

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

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

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.