Struct polkadot_sdk_frame::arithmetic::Rational128
pub struct Rational128(/* private fields */);Expand description
A wrapper for any rational number with a 128 bit numerator and denominator.
Implementations§
§impl Rational128
impl Rational128
pub fn zero() -> Rational128
pub fn zero() -> Rational128
Zero.
pub fn one() -> Rational128
pub fn one() -> Rational128
One
pub fn from(n: u128, d: u128) -> Rational128
pub fn from(n: u128, d: u128) -> Rational128
Build from a raw n/d.
pub fn from_unchecked(n: u128, d: u128) -> Rational128
pub fn from_unchecked(n: u128, d: u128) -> Rational128
Build from a raw n/d. This could lead to / 0 if not properly handled.
pub fn to_den(self, den: u128) -> Option<Rational128>
pub fn to_den(self, den: u128) -> Option<Rational128>
Convert self to a similar rational number where denominator is the given den.
This only returns if the result is accurate. None is returned if the result cannot be
accurately calculated.
pub fn lcm(&self, other: &Rational128) -> Option<u128>
pub fn lcm(&self, other: &Rational128) -> Option<u128>
Get the least common divisor of self and other.
This only returns if the result is accurate. None is returned if the result cannot be
accurately calculated.
pub fn lazy_saturating_add(self, other: Rational128) -> Rational128
pub fn lazy_saturating_add(self, other: Rational128) -> Rational128
A saturating add that assumes self and other have the same denominator.
pub fn lazy_saturating_sub(self, other: Rational128) -> Rational128
pub fn lazy_saturating_sub(self, other: Rational128) -> Rational128
A saturating subtraction that assumes self and other have the same denominator.
pub fn checked_add(
self,
other: Rational128,
) -> Result<Rational128, &'static str>
pub fn checked_add( self, other: Rational128, ) -> Result<Rational128, &'static str>
Addition. Simply tries to unify the denominators and add the numerators.
Overflow might happen during any of the steps. Error is returned in such cases.
pub fn checked_sub(
self,
other: Rational128,
) -> Result<Rational128, &'static str>
pub fn checked_sub( self, other: Rational128, ) -> Result<Rational128, &'static str>
Subtraction. Simply tries to unify the denominators and subtract the numerators.
Overflow might happen during any of the steps. None is returned in such cases.
Trait Implementations§
§impl Bounded for Rational128
impl Bounded for Rational128
§fn min_value() -> Rational128
fn min_value() -> Rational128
Returns the smallest finite number this type can represent
§fn max_value() -> Rational128
fn max_value() -> Rational128
Returns the largest finite number this type can represent
§impl Clone for Rational128
impl Clone for Rational128
§fn clone(&self) -> Rational128
fn clone(&self) -> Rational128
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read more§impl Debug for Rational128
impl Debug for Rational128
§impl Default for Rational128
impl Default for Rational128
§fn default() -> Rational128
fn default() -> Rational128
Returns the “default value” for a type. Read more
§impl From<Rational128> for RationalInfinite
impl From<Rational128> for RationalInfinite
§fn from(t: Rational128) -> RationalInfinite
fn from(t: Rational128) -> RationalInfinite
Converts to this type from the input type.
§impl<T> From<T> for Rational128
impl<T> From<T> for Rational128
§fn from(t: T) -> Rational128
fn from(t: T) -> Rational128
Converts to this type from the input type.
§impl Ord for Rational128
impl Ord for Rational128
§impl PartialEq for Rational128
impl PartialEq for Rational128
§fn eq(&self, other: &Rational128) -> bool
fn eq(&self, other: &Rational128) -> bool
This method tests for
self and other values to be equal, and is used
by ==.§impl PartialOrd for Rational128
impl PartialOrd for Rational128
§fn partial_cmp(&self, other: &Rational128) -> Option<Ordering>
fn partial_cmp(&self, other: &Rational128) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self and other) and is used by the <=
operator. Read moreimpl Copy for Rational128
impl Eq for Rational128
Auto Trait Implementations§
impl Freeze for Rational128
impl RefUnwindSafe for Rational128
impl Send for Rational128
impl Sync for Rational128
impl Unpin for Rational128
impl UnwindSafe for Rational128
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