Struct Fraction 

pub struct Fraction {
    pub numerator: i64,
    pub denominator: i64,
}

Available on crate feature fraction only.

Represents a fraction in terms of a numerator divided by a denominator.

Fields

numerator: i64

The numerator in the fraction, e.g. 2 in 2/3.

denominator: i64

The value by which the numerator is divided, e.g. 3 in 2/3. Must be positive.

Implementations

impl Fraction

pub const fn gcd(a: i64, b: i64) -> u64

Helper to calculate Greatest Common Divisor (GCD).

Returns u64 to correctly handle the edge case where the GCD is i64::MIN.abs() (2^63), which cannot be represented in a positive i64.

pub fn lcm(a: i64, b: i64) -> Result<i128, FractionError>

Helper to calculate Least Common Multiple (LCM)

pub const fn new( numerator: i64, denominator: i64, ) -> Result<Self, FractionError>

Creates a new Fraction, ensuring the denominator is positive and the fraction is reduced to its simplest form.

pub const fn reduce(&mut self)

Reduces the fraction to its simplest form.

Safety behavior

If the fraction contains i64::MIN in the denominator (which is invalid state), or i64::MIN in the numerator with a negative denominator, this function will silently return without modifying the struct, to avoid panicking.

pub const fn reduced(self) -> Self

Returns a new, reduced Fraction.

pub fn checked_add(self, other: Self) -> Result<Self, FractionError>

Checked addition for Fractions.

pub fn checked_sub(self, other: Self) -> Result<Self, FractionError>

Checked subtraction for Fractions.

pub fn checked_mul(self, other: Self) -> Result<Self, FractionError>

Checked multiplication for Fractions.

pub fn checked_div(self, other: Self) -> Result<Self, FractionError>

Checked division for Fractions.

pub fn to_f64_unchecked(self) -> f64

Converts the fraction to an f64.

Panics

Panics if the denominator is zero. This should not happen for Fraction instances created via Fraction::new() or other checked arithmetic, but can occur if a Fraction is constructed directly in an invalid state.

For a fallible conversion that returns a Result, use TryFrom<Fraction> for f64.

Trait Implementations

impl Clone for Fraction

fn clone(&self) -> Fraction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Fraction

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

Formats the value using the given formatter.

impl Default for Fraction

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Fraction

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Fraction

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

Formats the value using the given formatter.

impl From<Fraction> for Value

Available on crate feature cel only.

fn from(value: Fraction) -> Self

Converts to this type from the input type.

impl Hash for Fraction

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 Message for Fraction

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Fraction

fn eq(&self, other: &Fraction) -> 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 PartialOrd for Fraction

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 Serialize for Fraction

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<Fraction> for f64

type Error = FractionError

The type returned in the event of a conversion error.

fn try_from(fraction: Fraction) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for Fraction

impl Eq for Fraction

impl StructuralPartialEq for Fraction