Struct Rational 

pub struct Rational { /* private fields */ }

A rational number for dimension exponents (e.g., 1/2 for sqrt).

Always stored in reduced form with den > 0.

Implementations

impl Rational

pub const ZERO: Self

pub const ONE: Self

pub const HALF: Self

1/2 — used for square-root exponents.

pub const THIRD: Self

1/3 — used for cube-root exponents.

pub fn try_new(num: i32, den: i32) -> Result<Self, RationalError>

Try to create a new rational number, automatically reduced.

Returns Err if den is zero.

pub const fn from_int(n: i32) -> Self

Create a rational from an integer.

pub const fn num(self) -> i32

Returns the numerator.

pub const fn den(self) -> i32

Returns the denominator (always positive).

pub const fn is_zero(self) -> bool

pub const fn is_integer(self) -> bool

Trait Implementations

impl Add for Rational

type Output = Result<Rational, RationalError>

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation.

impl Clone for Rational

fn clone(&self) -> Rational

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Rational

impl Debug for Rational

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

Formats the value using the given formatter.

impl Display for Rational

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

Formats the value using the given formatter.

impl Eq for Rational

impl FormatEquivalent for Rational

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

Returns true if self and other are equivalent up to formatting.

impl Hash for Rational

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 Mul for Rational

type Output = Result<Rational, RationalError>

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self::Output

Performs the * operation.

impl Neg for Rational

type Output = Rational

The resulting type after applying the - operator.

fn neg(self) -> Self

Performs the unary - operation.

impl PartialEq for Rational

fn eq(&self, other: &Rational) -> 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 StructuralPartialEq for Rational

impl Sub for Rational

type Output = Result<Rational, RationalError>

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation.