FloatVid in rustc_trait_selection::infer::canonical::ir - Rust
Description: A floating-point (`f32` or `f64`) type variable ID.

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## FloatVid

# Struct FloatVid

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    pub struct FloatVid {
        private_use_as_methods_instead: u32 is 0..=4294967040,
    }

Expand description

A floating-point (`f32` or `f64`) type variable ID.

## Fields§

§`private_use_as_methods_instead: u32 is 0..=4294967040`

## Implementations§

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### impl FloatVid

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#### pub const MAX_AS_U32: u32 = 4294967040

Maximum value the index can take, as a `u32`.

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#### pub const MAX: FloatVid

Maximum value the index can take.

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#### pub const ZERO: FloatVid

Zero value of the index.

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#### pub const fn from_usize(value: usize) -> FloatVid

Creates a new index from a given `usize`.

##### §Panics

Will panic if `value` exceeds `MAX`.

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#### pub const fn from_u32(value: u32) -> FloatVid

Creates a new index from a given `u32`.

##### §Panics

Will panic if `value` exceeds `MAX`.

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#### pub const fn from_u16(value: u16) -> FloatVid

Creates a new index from a given `u16`.

##### §Panics

Will panic if `value` exceeds `MAX`.

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#### pub const unsafe fn from_u32_unchecked(value: u32) -> FloatVid

Creates a new index from a given `u32`.

##### §Safety

The provided value must be less than or equal to the maximum value for the newtype. Providing a value outside this range is undefined due to layout restrictions.

Prefer using `from_u32`.

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#### pub const fn index(self) -> usize

Extracts the value of this index as a `usize`.

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#### pub const fn as_u32(self) -> u32

Extracts the value of this index as a `u32`.

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#### pub const fn as_usize(self) -> usize

Extracts the value of this index as a `usize`.

## Trait Implementations§

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### impl Add<usize> for FloatVid

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#### type Output = FloatVid

The resulting type after applying the `+` operator.
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#### fn add(self, other: usize) -> FloatVid

Performs the `+` operation. Read more
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### impl AddAssign<usize> for FloatVid

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#### fn add_assign(&mut self, other: usize)

Performs the `+=` operation. Read more
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### impl Clone for FloatVid

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#### fn clone(&self) -> FloatVid

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl Copy for FloatVid

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### impl Debug for FloatVid

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#### fn fmt(&self, fmt: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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### impl<D> Decodable<D> for FloatVid
where D: Decoder,

Available on crate feature `nightly` only.
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#### fn decode(d: &mut D) -> FloatVid

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### impl<E> Encodable<E> for FloatVid
where E: Encoder,

Available on crate feature `nightly` only.
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#### fn encode(&self, e: &mut E)

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### impl Eq for FloatVid

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### impl From<u32> for FloatVid

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#### fn from(value: u32) -> FloatVid

Converts to this type from the input type.
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### impl From<usize> for FloatVid

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#### fn from(value: usize) -> FloatVid

Converts to this type from the input type.
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### impl Hash for FloatVid

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#### fn hash<H>(&self, state: &mut H)
where H: Hasher,

Feeds this value into the given `Hasher`. Read more
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#### fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more
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### impl Idx for FloatVid

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#### fn new(value: usize) -> FloatVid

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#### fn index(self) -> usize

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#### fn increment_by(&mut self, amount: usize)

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#### fn plus(self, amount: usize) -> Self

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### impl Ord for FloatVid

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#### fn cmp(&self, other: &FloatVid) -> Ordering

This method returns an `Ordering` between `self` and `other`. Read more
1.21.0 (const: unstable) · Source§

#### fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 (const: unstable) · Source§

#### fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 (const: unstable) · Source§

#### fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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### impl PartialEq for FloatVid

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#### fn eq(&self, other: &FloatVid) -> bool

Tests for `self` and `other` values to be equal, and is used by `==`.
1.0.0 (const: unstable) · Source§

#### fn ne(&self, other: &Rhs) -> bool

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl PartialOrd for FloatVid

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#### fn partial_cmp(&self, other: &FloatVid) -> Option<Ordering>

This method returns an ordering between `self` and `other` values if one exists. Read more
1.0.0 (const: unstable) · Source§

#### fn lt(&self, other: &Rhs) -> bool

Tests less than (for `self` and `other`) and is used by the `<` operator. Read more
1.0.0 (const: unstable) · Source§

#### fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for `self` and `other`) and is used by the `<=` operator. Read more
1.0.0 (const: unstable) · Source§

#### fn gt(&self, other: &Rhs) -> bool

Tests greater than (for `self` and `other`) and is used by the `>` operator. Read more
1.0.0 (const: unstable) · Source§

#### fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for `self` and `other`) and is used by the `>=` operator. Read more
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### impl Step for FloatVid

Available on crate feature `nightly` only.
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#### fn steps_between(start: &FloatVid, end: &FloatVid) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the bounds on the number of successor steps required to get from `start` to `end` like `Iterator::size_hint()`. Read more
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#### fn forward_checked(start: FloatVid, u: usize) -> Option<FloatVid>

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the value that would be obtained by taking the successor of `self` `count` times. Read more
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#### fn backward_checked(start: FloatVid, u: usize) -> Option<FloatVid>

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the value that would be obtained by taking the predecessor of `self` `count` times. Read more
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#### fn forward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the value that would be obtained by taking the successor of `self` `count` times. Read more
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#### unsafe fn forward_unchecked(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the value that would be obtained by taking the successor of `self` `count` times. Read more
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#### fn backward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the value that would be obtained by taking the predecessor of `self` `count` times. Read more
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#### unsafe fn backward_unchecked(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (`step_trait`)
Returns the value that would be obtained by taking the predecessor of `self` `count` times. Read more
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### impl StructuralPartialEq for FloatVid

Available on crate feature `nightly` only.
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### impl UnifyKey for FloatVid

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#### type Value = FloatVarValue

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#### fn index(&self) -> u32

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#### fn from_index(i: u32) -> FloatVid

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#### fn tag() -> &'static str

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#### fn order_roots( a: Self, a_value: &Self::Value, b: Self, b_value: &Self::Value, ) -> Option<(Self, Self)>

You should return first the key that should be used as root, then the other key (that will then point to the new root). Read more

## Auto Trait Implementations§

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### impl DynSend for FloatVid

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### impl DynSync for FloatVid

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### impl Freeze for FloatVid

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### impl RefUnwindSafe for FloatVid

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### impl Send for FloatVid

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### impl Sync for FloatVid

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### impl Unpin for FloatVid

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### impl UnsafeUnpin for FloatVid

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### impl UnwindSafe for FloatVid

## Blanket Implementations§

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### impl<T> Aligned for T

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#### const ALIGN: Alignment

Alignment of `Self`.
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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> AnyEq for T
where T: Any + PartialEq,

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#### fn equals(&self, other: &(dyn Any + 'static)) -> bool

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#### fn as_any(&self) -> &(dyn Any + 'static)

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### impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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#### fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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#### fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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### impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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#### fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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#### fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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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> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
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### impl<T, R> CollectAndApply<T, R> for T

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#### fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to `f(&iter.collect::<Vec<_>>())`.

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#### type Output = R

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### impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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#### fn compare(&self, key: &K) -> Ordering

Compare self to `key` and return their ordering.
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### impl<T> DynClone for T
where T: Clone,

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#### fn __clone_box(&self, _: Private) -> *mut ()

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### impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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#### fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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### impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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#### fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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### impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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#### fn equivalent(&self, key: &K) -> bool

Compare self to `key` and return `true` if they are equal.
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### impl<T> ErasedDestructor for T
where T: 'static,

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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> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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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> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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### impl<K> IntoQueryKey<K> for K

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#### fn into_query_key(self) -> K

Argument conversion from `Self` to `K`. This should always be a very cheap conversion, e.g. `LocalDefId::to_def_id`.
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### impl<I, T> IntoSliceIdx<I, [T]> for I
where I: Idx,

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#### type Output = usize

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#### fn into_slice_idx(self) -> <I as IntoSliceIdx<I, [T]>>::Output

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### impl<T> MaybeResult<T> for T

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#### type Error = !

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#### fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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#### fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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### impl<T> Pointable for T

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#### const ALIGN: usize

The alignment of pointer.
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#### type Init = T

The type for initializers.
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#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.
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### impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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#### fn upcast(self, interner: I) -> U

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### impl<I, T> UpcastFrom<I, T> for T

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#### fn upcast_from(from: T, _tcx: I) -> T

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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 4 bytes