Struct sp_runtime::Permill

pub struct Permill(_);

Re-export top-level arithmetic stuff. A fixed point representation of a number between in the range [0, 1].

Parts per Million

Methods

impl Permill

Re-export top-level arithmetic stuff.

pub fn zero() -> Permill

Nothing.

pub fn is_zero(&self) -> bool

true if this is nothing.

pub fn one() -> Permill

Everything.

pub fn deconstruct(self) -> u32

Consume self and deconstruct into a raw numeric type.

pub const fn accuracy() -> u32

Return the scale at which this per-thing is working.

pub const fn from_parts(parts: u32) -> Permill

From an explicitly defined number of parts per maximum of the type.

This can be called at compile time.

pub const fn from_percent(x: u32) -> Permill

Converts from a percent. Equal to x / 100.

This can be created at compile time.

pub fn square(self) -> Permill

Return the product of multiplication of this value by itself.

pub fn from_fraction(x: f64) -> Permill

Converts a fraction into Permill.

pub fn from_rational_approximation<N>(p: N, q: N) -> Permill where
    N: Clone + Ord + From<u32> + TryInto<u32> + Div<N, Output = N>, 

Approximate the fraction p/q into a per-thing fraction. This will never overflow.

The computation of this approximation is performed in the generic type N. Given M as the data type that can hold the maximum value of this per-thing (e.g. u32 for perbill), this can only work if N == M or N: From<M> + TryInto<M>.

Trait Implementations

impl Clone for Permill

fn clone(&self) -> Permill

Returns a copy of the value.

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

Performs copy-assignment from source.

impl CompactAs for Permill

type As = u32

A compact-encodable type that should be used as the encoding.

fn encode_as(&self) -> &u32

Returns the encodable type.

fn decode_from(x: u32) -> Permill

Create Self from the decodable type.

impl Copy for Permill

impl Debug for Permill

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

Formats the value using the given formatter.

impl Decode for Permill

fn decode<DecIn>(input: &mut DecIn) -> Result<Permill, Error> where
    DecIn: Input, 

Attempt to deserialise the value from input.

impl Default for Permill

fn default() -> Permill

Returns the "default value" for a type.

impl<'de> Deserialize<'de> for Permill

fn deserialize<__D>(
    __deserializer: __D
) -> Result<Permill, <__D as Deserializer<'de>>::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Div<Permill> for Permill

type Output = Permill

The resulting type after applying the / operator.

fn div(self, rhs: Permill) -> <Permill as Div<Permill>>::Output

Performs the / operation.

impl Encode for Permill

fn encode_to<EncOut>(&self, dest: &mut EncOut) where
    EncOut: Output, 

Convert self to a slice and append it to the destination.

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

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R where
    F: FnOnce(&[u8]) -> R, 

Convert self to a slice and then invoke the given closure with it.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

impl EncodeLike<Permill> for Permill

impl Eq for Permill

impl From<Compact<Permill>> for Permill

fn from(x: Compact<Permill>) -> Permill

Performs the conversion.

impl<N> Mul<N> for Permill where
    N: Rem<N, Output = N> + Div<N, Output = N> + Clone + Mul<N, Output = N> + From<u32> + Add<N, Output = N> + UniqueSaturatedInto<u32>, 

Overflow-prune multiplication.

tailored to be used with a balance type.

type Output = N

The resulting type after applying the * operator.

fn mul(self, b: N) -> <Permill as Mul<N>>::Output

Performs the * operation.

impl Ord for Permill

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

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

Restrict a value to a certain interval.

impl PartialEq<Permill> for Permill

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<Permill> for Permill

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Saturating for Permill

fn saturating_add(self, rhs: Permill) -> Permill

Saturated addition - if the product can't fit in the type then just use max-value.

fn saturating_sub(self, rhs: Permill) -> Permill

Saturated subtraction - if the product can't fit in the type then just use max-value.

fn saturating_mul(self, rhs: Permill) -> Permill

Saturated multiply - if the product can't fit in the type then just use max-value.

impl Serialize for Permill

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

Serialize this value into the given Serde serializer.

impl StructuralEq for Permill

impl StructuralPartialEq for Permill