Enum Sign

#[non_exhaustive]
pub enum Sign {
    Negative,
    Zero,
    Positive,
}

The sign of a geometric predicate, with its trustworthiness attached.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Negative

Certified strictly negative.

Zero

Certified exactly zero (degenerate configuration).

Positive

Certified strictly positive.

Implementations

impl Sign

pub const fn flip(self) -> Sign

The sign of the negated value.

Orientation predicates are antisymmetric: swapping two arguments must flip the result. Expressing that as one operation keeps callers from open-coding a match that silently mishandles Zero.

Trait Implementations

impl Clone for Sign

fn clone(&self) -> Sign

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Sign

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

Formats the value using the given formatter.

impl Hash for Sign

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

where __H: Hasher,

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 PartialEq for Sign

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for Sign

impl Eq for Sign

impl StructuralPartialEq for Sign