[−][src]Struct float_cmp::F32Margin
This type defines a margin within two f32s might be considered equal
and is intended as the associated type for the ApproxEq
trait.
Two methods are used to determine approximate equality.
First an epsilon method is used, considering them approximately equal if they
differ by <= epsilon
. This will only succeed for very small numbers.
Note that it may succeed even if the parameters are of differing signs straddling
zero.
The second method considers how many ULPs (units of least precision, units in
the last place, which is the integer number of floating point representations
that the parameters are separated by) different the parameters are and considers
them approximately equal if this is <= ulps
. For large floating point numbers,
an ULP can be a rather large gap, but this kind of comparison is necessary
because floating point operations must round to the nearest representable value
and so larger floating point values accumulate larger errors.
Fields
epsilon: f32
ulps: i32
Methods
impl F32Margin
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pub fn zero() -> F32Margin
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pub fn epsilon(self, epsilon: f32) -> Self
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pub fn ulps(self, ulps: i32) -> Self
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Trait Implementations
impl From<(f32, i32)> for F32Margin
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impl Clone for F32Margin
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impl Copy for F32Margin
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impl Default for F32Margin
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impl Debug for F32Margin
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Auto Trait Implementations
impl Send for F32Margin
impl Sync for F32Margin
impl Unpin for F32Margin
impl UnwindSafe for F32Margin
impl RefUnwindSafe for F32Margin
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,