Enum IntPred 

pub enum IntPred {
    Eq,
    Ne,
    Slt,
    Sle,
    Sgt,
    Sge,
    Ult,
    Ule,
    Ugt,
    Uge,
}

The ten integer comparisons.

Signedness is on the predicate rather than on the type, for the same reason it is on sdiv and udiv: the type space is halved and the operation says what it means.

Variants

Eq

Equal.

Ne

Not equal.

Slt

Signed less than.

Sle

Signed less than or equal.

Sgt

Signed greater than.

Sge

Signed greater than or equal.

Ult

Unsigned less than.

Ule

Unsigned less than or equal.

Ugt

Unsigned greater than.

Uge

Unsigned greater than or equal.

Implementations

impl IntPred

pub const fn name(self) -> &'static str

The textual form.

pub fn from_name(name: &str) -> Option<Self>

The predicate with that name, if there is one.

pub fn all() -> impl Iterator<Item = Self>

Every predicate.

pub const fn inverse(self) -> Self

The predicate that holds exactly when this one does not.

pub const fn swapped(self) -> Self

The predicate that holds when the operands are given the other way round.

pub const fn is_signed(self) -> bool

Whether this reads its operands as signed. Equality reads them as neither.

pub const fn unsigned(self) -> Self

The predicate that asks the same question with the bits read as unsigned.

Each ordering has a counterpart the other way round and equality is the same question at both readings, so every predicate has one and nothing here is a refusal. What it is for is operands known not to be negative: the two readings agree on those, so a signed comparison of two of them is the unsigned comparison of them, and the unsigned one is the one that still holds when the same values are looked at in fewer bits.

Trait Implementations

impl Clone for IntPred

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IntPred

impl Debug for IntPred

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

Formats the value using the given formatter.

impl Display for IntPred

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

Formats the value using the given formatter.

impl Eq for IntPred

impl Hash for IntPred

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for IntPred

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for IntPred

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for IntPred

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for IntPred