Struct hashed_parachain_runtime::Percent
pub struct Percent(_);
Expand description
A fixed point representation of a number in the range [0, 1].
Percent
Implementations§
§impl Percent
impl Percent
pub const fn from_parts(parts: u8) -> Percent
pub const fn from_parts(parts: u8) -> Percent
From an explicitly defined number of parts per maximum of the type.
pub const fn from_percent(x: u8) -> Percent
pub const fn from_percent(x: u8) -> Percent
Converts a percent into Self
. Equal to x / 100
.
This can be created at compile time.
pub const fn deconstruct(self) -> u8
pub const fn deconstruct(self) -> u8
See [PerThing::deconstruct
].
pub fn from_float(x: f64) -> Percent
pub fn from_float(x: f64) -> Percent
See [PerThing::from_float
].
pub fn from_rational_approximation<N>(p: N, q: N) -> Percentwhere
N: RationalArg + TryInto<u8> + TryInto<u16>,
u8: Into<N>,
👎Deprecated: Use PerThing::from_rational
instead
pub fn from_rational_approximation<N>(p: N, q: N) -> Percentwhere N: RationalArg + TryInto<u8> + TryInto<u16>, u8: Into<N>,
PerThing::from_rational
insteadSee [PerThing::from_rational
].
pub fn from_rational<N>(p: N, q: N) -> Percentwhere
N: RationalArg + TryInto<u8> + TryInto<u16>,
u8: Into<N>,
pub fn from_rational<N>(p: N, q: N) -> Percentwhere N: RationalArg + TryInto<u8> + TryInto<u16>, u8: Into<N>,
See [PerThing::from_rational
].
pub fn mul_floor<N>(self, b: N) -> Nwhere
N: MultiplyArg + UniqueSaturatedInto<u8>,
u8: Into<N>,
pub fn mul_floor<N>(self, b: N) -> Nwhere N: MultiplyArg + UniqueSaturatedInto<u8>, u8: Into<N>,
See [PerThing::mul_floor
].
pub fn mul_ceil<N>(self, b: N) -> Nwhere
N: MultiplyArg + UniqueSaturatedInto<u8>,
u8: Into<N>,
pub fn mul_ceil<N>(self, b: N) -> Nwhere N: MultiplyArg + UniqueSaturatedInto<u8>, u8: Into<N>,
See [PerThing::mul_ceil
].
pub fn saturating_reciprocal_mul<N>(self, b: N) -> Nwhere
N: ReciprocalArg + UniqueSaturatedInto<u8>,
u8: Into<N>,
pub fn saturating_reciprocal_mul<N>(self, b: N) -> Nwhere N: ReciprocalArg + UniqueSaturatedInto<u8>, u8: Into<N>,
See [PerThing::saturating_reciprocal_mul
].
pub fn saturating_reciprocal_mul_floor<N>(self, b: N) -> Nwhere
N: ReciprocalArg + UniqueSaturatedInto<u8>,
u8: Into<N>,
pub fn saturating_reciprocal_mul_floor<N>(self, b: N) -> Nwhere N: ReciprocalArg + UniqueSaturatedInto<u8>, u8: Into<N>,
See [PerThing::saturating_reciprocal_mul_floor
].
pub fn saturating_reciprocal_mul_ceil<N>(self, b: N) -> Nwhere
N: ReciprocalArg + UniqueSaturatedInto<u8>,
u8: Into<N>,
pub fn saturating_reciprocal_mul_ceil<N>(self, b: N) -> Nwhere N: ReciprocalArg + UniqueSaturatedInto<u8>, u8: Into<N>,
See [PerThing::saturating_reciprocal_mul_ceil
].
pub fn saturating_div(self, rhs: Percent, r: Rounding) -> Percent
pub fn saturating_div(self, rhs: Percent, r: Rounding) -> Percent
Saturating division. Compute self / rhs
, saturating at one if rhs < self
.
The rounding
method must be specified. e.g.:
let pc = |x| Percent::from_percent(x);
assert_eq!(
pc(2).saturating_div(pc(3), Down),
pc(66),
);
assert_eq!(
pc(1).saturating_div(pc(3), NearestPrefUp),
pc(33),
);
assert_eq!(
pc(2).saturating_div(pc(3), NearestPrefDown),
pc(67),
);
assert_eq!(
pc(1).saturating_div(pc(3), Up),
pc(34),
);
Trait Implementations§
§impl CheckedAdd for Percent
impl CheckedAdd for Percent
§fn checked_add(&self, rhs: &Percent) -> Option<Percent>
fn checked_add(&self, rhs: &Percent) -> Option<Percent>
None
is
returned.§impl CheckedMul for Percent
impl CheckedMul for Percent
Note
CheckedMul will never fail for PerThings.
§fn checked_mul(&self, rhs: &Percent) -> Option<Percent>
fn checked_mul(&self, rhs: &Percent) -> Option<Percent>
None
is returned.§impl CheckedSub for Percent
impl CheckedSub for Percent
§fn checked_sub(&self, v: &Percent) -> Option<Percent>
fn checked_sub(&self, v: &Percent) -> Option<Percent>
None
is returned.§impl CompactAs for Percent
impl CompactAs for Percent
Implementation makes any compact encoding of PerThing::Inner
valid,
when decoding it will saturate up to PerThing::ACCURACY
.
§impl Decode for Percent
impl Decode for Percent
§fn decode<I>(input: &mut I) -> Result<Percent, Error>where
I: Input,
fn decode<I>(input: &mut I) -> Result<Percent, Error>where I: Input,
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where I: Input,
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
§impl<'de> Deserialize<'de> for Percent
impl<'de> Deserialize<'de> for Percent
§fn deserialize<__D>(
__deserializer: __D
) -> Result<Percent, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>( __deserializer: __D ) -> Result<Percent, <__D as Deserializer<'de>>::Error>where __D: Deserializer<'de>,
§impl Encode for Percent
impl Encode for Percent
§fn encode_to<__CodecOutputEdqy>(
&self,
__codec_dest_edqy: &mut __CodecOutputEdqy
)where
__CodecOutputEdqy: Output + ?Sized,
fn encode_to<__CodecOutputEdqy>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )where __CodecOutputEdqy: Output + ?Sized,
§fn using_encoded<R, F>(&self, f: F) -> Rwhere
F: FnOnce(&[u8]) -> R,
fn using_encoded<R, F>(&self, f: F) -> Rwhere F: FnOnce(&[u8]) -> R,
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
§impl MaxEncodedLen for Percent
impl MaxEncodedLen for Percent
§fn max_encoded_len() -> usize
fn max_encoded_len() -> usize
§impl<N> Mul<N> for Percentwhere
N: Div<N, Output = N> + Clone + Mul<N, Output = N> + UniqueSaturatedInto<u8> + Add<N, Output = N> + Rem<N, Output = N> + Unsigned,
u8: Into<N>,
impl<N> Mul<N> for Percentwhere N: Div<N, Output = N> + Clone + Mul<N, Output = N> + UniqueSaturatedInto<u8> + Add<N, Output = N> + Rem<N, Output = N> + Unsigned, u8: Into<N>,
Non-overflow multiplication.
This is tailored to be used with a balance type.
§impl Ord for Percent
impl Ord for Percent
§impl PartialOrd<Percent> for Percent
impl PartialOrd<Percent> for Percent
§fn partial_cmp(&self, other: &Percent) -> Option<Ordering>
fn partial_cmp(&self, other: &Percent) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read more§impl PerThing for Percent
impl PerThing for Percent
§fn deconstruct(self) -> <Percent as PerThing>::Inner
fn deconstruct(self) -> <Percent as PerThing>::Inner
Consume self and return the number of parts per thing.
§fn from_parts(parts: <Percent as PerThing>::Inner) -> Percent
fn from_parts(parts: <Percent as PerThing>::Inner) -> Percent
Build this type from a number of parts per thing.
§fn from_float(x: f64) -> Percent
fn from_float(x: f64) -> Percent
NOTE: saturate to 0 or 1 if x is beyond [0, 1]
§type Upper = u16
type Upper = u16
Self::Inner
, used to avoid overflow in some computations.
It must be able to compute ACCURACY^2
.§const ACCURACY: <Percent as PerThing>::Inner = {transmute(0x64): <sp_runtime::Percent as sp_runtime::PerThing>::Inner}
const ACCURACY: <Percent as PerThing>::Inner = {transmute(0x64): <sp_runtime::Percent as sp_runtime::PerThing>::Inner}
§fn from_rational_with_rounding<N>(
p: N,
q: N,
r: Rounding
) -> Result<Percent, ()>where
N: Clone + Ord + TryInto<<Percent as PerThing>::Inner> + TryInto<<Percent as PerThing>::Upper> + Div<N, Output = N> + Rem<N, Output = N> + Add<N, Output = N> + AddAssign<N> + Unsigned + Zero + One,
<Percent as PerThing>::Inner: Into<N>,
fn from_rational_with_rounding<N>( p: N, q: N, r: Rounding ) -> Result<Percent, ()>where N: Clone + Ord + TryInto<<Percent as PerThing>::Inner> + TryInto<<Percent as PerThing>::Upper> + Div<N, Output = N> + Rem<N, Output = N> + Add<N, Output = N> + AddAssign<N> + Unsigned + Zero + One, <Percent as PerThing>::Inner: Into<N>,
p/q
into a per-thing fraction. Read more§fn less_epsilon(self) -> Self
fn less_epsilon(self) -> Self
self
or self
if it is already zero.§fn try_less_epsilon(self) -> Result<Self, Self>
fn try_less_epsilon(self) -> Result<Self, Self>
self
or an error with the same value if self
is already
zero.§fn plus_epsilon(self) -> Self
fn plus_epsilon(self) -> Self
self
or self
if it is already one.§fn try_plus_epsilon(self) -> Result<Self, Self>
fn try_plus_epsilon(self) -> Result<Self, Self>
self
or an error with the same value if self
is already
one.§fn from_percent(x: Self::Inner) -> Self
fn from_percent(x: Self::Inner) -> Self
Self::from_parts(x * Self::ACCURACY / 100)
but more accurate and can cope with potential type overflows.§fn left_from_one(self) -> Self
fn left_from_one(self) -> Self
self
is saturating-subtracted from Self::one()
.§fn mul_floor<N>(self, b: N) -> Nwhere
N: MultiplyArg + UniqueSaturatedInto<Self::Inner>,
Self::Inner: Into<N>,
fn mul_floor<N>(self, b: N) -> Nwhere N: MultiplyArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,
Mul
rounds to the
nearest whole number. Read more§fn mul_ceil<N>(self, b: N) -> Nwhere
N: MultiplyArg + UniqueSaturatedInto<Self::Inner>,
Self::Inner: Into<N>,
fn mul_ceil<N>(self, b: N) -> Nwhere N: MultiplyArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,
Mul
rounds to the nearest whole number. Read more§fn saturating_reciprocal_mul<N>(self, b: N) -> Nwhere
N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>,
Self::Inner: Into<N>,
fn saturating_reciprocal_mul<N>(self, b: N) -> Nwhere N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,
self
. The result is rounded to the
nearest whole number and saturates at the numeric bounds instead of overflowing. Read more§fn saturating_reciprocal_mul_floor<N>(self, b: N) -> Nwhere
N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>,
Self::Inner: Into<N>,
fn saturating_reciprocal_mul_floor<N>(self, b: N) -> Nwhere N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,
self
. The result is rounded down to the
nearest whole number and saturates at the numeric bounds instead of overflowing. Read more§fn saturating_reciprocal_mul_ceil<N>(self, b: N) -> Nwhere
N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>,
Self::Inner: Into<N>,
fn saturating_reciprocal_mul_ceil<N>(self, b: N) -> Nwhere N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,
self
. The result is rounded up to the
nearest whole number and saturates at the numeric bounds instead of overflowing. Read more§fn from_rational<N>(p: N, q: N) -> Selfwhere
N: RationalArg + TryInto<Self::Inner> + TryInto<Self::Upper>,
Self::Inner: Into<N>,
fn from_rational<N>(p: N, q: N) -> Selfwhere N: RationalArg + TryInto<Self::Inner> + TryInto<Self::Upper>, Self::Inner: Into<N>,
p/q
into a per-thing fraction. This will never overflow. Read more§fn from_rational_approximation<N>(p: N, q: N) -> Selfwhere
N: RationalArg + TryInto<Self::Inner> + TryInto<Self::Upper>,
Self::Inner: Into<N>,
fn from_rational_approximation<N>(p: N, q: N) -> Selfwhere N: RationalArg + TryInto<Self::Inner> + TryInto<Self::Upper>, Self::Inner: Into<N>,
Self::from_rational
.§impl Saturating for Percent
impl Saturating for Percent
§fn saturating_add(self, rhs: Percent) -> Percent
fn saturating_add(self, rhs: Percent) -> Percent
Saturating addition. Compute self + rhs
, saturating at the numeric bounds instead of
overflowing. This operation is lossless if it does not saturate.
§fn saturating_sub(self, rhs: Percent) -> Percent
fn saturating_sub(self, rhs: Percent) -> Percent
Saturating subtraction. Compute self - rhs
, saturating at the numeric bounds instead of
overflowing. This operation is lossless if it does not saturate.
§fn saturating_mul(self, rhs: Percent) -> Percent
fn saturating_mul(self, rhs: Percent) -> Percent
Saturating multiply. Compute self * rhs
, saturating at the numeric bounds instead of
overflowing. This operation is lossy.
§fn saturating_pow(self, exp: usize) -> Percent
fn saturating_pow(self, exp: usize) -> Percent
Saturating exponentiation. Computes self.pow(exp)
, saturating at the numeric
bounds instead of overflowing. This operation is lossy.
§fn saturating_inc(&mut self)where
Self: One,
fn saturating_inc(&mut self)where Self: One,
§fn saturating_dec(&mut self)where
Self: One,
fn saturating_dec(&mut self)where Self: One,
§fn saturating_accrue(&mut self, amount: Self)where
Self: One,
fn saturating_accrue(&mut self, amount: Self)where Self: One,
amount
, saturating.§fn saturating_reduce(&mut self, amount: Self)where
Self: One,
fn saturating_reduce(&mut self, amount: Self)where Self: One,
amount
, saturating at zero.§impl SaturatingAdd for Percent
impl SaturatingAdd for Percent
§fn saturating_add(&self, v: &Percent) -> Percent
fn saturating_add(&self, v: &Percent) -> Percent
self + other
, saturating at the relevant high or low boundary of
the type.§impl SaturatingSub for Percent
impl SaturatingSub for Percent
§fn saturating_sub(&self, v: &Percent) -> Percent
fn saturating_sub(&self, v: &Percent) -> Percent
self - other
, saturating at the relevant high or low boundary of
the type.§impl Serialize for Percent
impl Serialize for Percent
§fn serialize<__S>(
&self,
__serializer: __S
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>( &self, __serializer: __S ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where __S: Serializer,
impl Copy for Percent
impl EncodeLike<Percent> for Percent
impl Eq for Percent
impl StructuralEq for Percent
impl StructuralPartialEq for Percent
Auto Trait Implementations§
impl RefUnwindSafe for Percent
impl Send for Percent
impl Sync for Percent
impl Unpin for Percent
impl UnwindSafe for Percent
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
§impl<T> CheckedConversion for T
impl<T> CheckedConversion for T
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Self: TryFrom<T>,
fn checked_from<T>(t: T) -> Option<Self>where Self: TryFrom<T>,
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Self: TryInto<T>,
fn checked_into<T>(self) -> Option<T>where Self: TryInto<T>,
§impl<T> Conv for T
impl<T> Conv for T
§impl<T> DecodeAll for Twhere
T: Decode,
impl<T> DecodeAll for Twhere T: Decode,
§fn decode_all(input: &mut &[u8]) -> Result<T, Error>
fn decode_all(input: &mut &[u8]) -> Result<T, Error>
Self
and consume all of the given input data. Read more§impl<T> DecodeLimit for Twhere
T: Decode,
impl<T> DecodeLimit for Twhere T: Decode,
§impl<T> DefensiveMax<T> for Twhere
T: PartialOrd<T>,
impl<T> DefensiveMax<T> for Twhere T: PartialOrd<T>,
§fn defensive_max(self, other: T) -> T
fn defensive_max(self, other: T) -> T
§fn defensive_strict_max(self, other: T) -> T
fn defensive_strict_max(self, other: T) -> T
§impl<T> DefensiveMin<T> for Twhere
T: PartialOrd<T>,
impl<T> DefensiveMin<T> for Twhere T: PartialOrd<T>,
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fn defensive_min(self, other: T) -> T
§fn defensive_strict_min(self, other: T) -> T
fn defensive_strict_min(self, other: T) -> T
§impl<T> DefensiveSaturating for Twhere
T: Saturating + CheckedAdd + CheckedMul + CheckedSub + One,
impl<T> DefensiveSaturating for Twhere T: Saturating + CheckedAdd + CheckedMul + CheckedSub + One,
§fn defensive_saturating_add(self, other: T) -> T
fn defensive_saturating_add(self, other: T) -> T
self
plus other
defensively.§fn defensive_saturating_sub(self, other: T) -> T
fn defensive_saturating_sub(self, other: T) -> T
self
minus other
defensively.§fn defensive_saturating_mul(self, other: T) -> T
fn defensive_saturating_mul(self, other: T) -> T
self
and other
defensively.§fn defensive_saturating_accrue(&mut self, other: T)
fn defensive_saturating_accrue(&mut self, other: T)
self
by other
defensively.§fn defensive_saturating_reduce(&mut self, other: T)
fn defensive_saturating_reduce(&mut self, other: T)
self
by other
defensively.§fn defensive_saturating_inc(&mut self)
fn defensive_saturating_inc(&mut self)
self
by one defensively.§fn defensive_saturating_dec(&mut self)
fn defensive_saturating_dec(&mut self)
self
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§impl<T> EnsureSubAssign for Twhere
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impl<T> EnsureSubAssign for Twhere T: CheckedSub + PartialOrd<T> + Zero,
§fn ensure_sub_assign(&mut self, v: Self) -> Result<(), ArithmeticError>
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