pub struct PerU16(/* private fields */);
Expand description

A fixed point representation of a number in the range [0, 1].

Parts per 65535

Implementations§

source§

impl PerU16

source

pub const fn from_parts(parts: u16) -> Self

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

source

pub const fn from_percent(x: u16) -> Self

Converts a percent into Self. Equal to x / 100.

This can be created at compile time.

source

pub const fn one() -> Self

source

pub fn is_one(&self) -> bool

source

pub const fn zero() -> Self

source

pub fn is_zero(&self) -> bool

source

pub const fn deconstruct(self) -> u16

source

pub fn square(self) -> Self

source

pub fn from_float(x: f64) -> Self

source

pub fn from_rational_approximation<N>(p: N, q: N) -> Self
where N: RationalArg + TryInto<u16> + TryInto<u32>, u16: Into<N>,

👎Deprecated: Use PerThing::from_rational instead
source

pub fn from_rational<N>(p: N, q: N) -> Self
where N: RationalArg + TryInto<u16> + TryInto<u32>, u16: Into<N>,

source

pub fn int_mul(self, b: u16) -> Self

Integer multiplication with another value, saturating at 1.

source

pub fn int_div(self, b: Self) -> u16

Integer division with another value, rounding down.

source

pub fn mul_floor<N>(self, b: N) -> N

source

pub fn mul_ceil<N>(self, b: N) -> N

source

pub fn saturating_reciprocal_mul<N>(self, b: N) -> N

source

pub fn saturating_reciprocal_mul_floor<N>(self, b: N) -> N

source

pub fn saturating_reciprocal_mul_ceil<N>(self, b: N) -> N

source

pub fn saturating_div(self, rhs: Self, r: Rounding) -> Self

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),
);
source§

impl PerU16

source

pub const fn from_perthousand(x: u16) -> Self

Converts a percent into Self. Equal to x / 1000.

This can be created at compile time.

Trait Implementations§

source§

impl Add for PerU16

§

type Output = PerU16

The resulting type after applying the + operator.
source§

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

Performs the + operation. Read more
source§

impl Bounded for PerU16

source§

fn min_value() -> Self

Returns the smallest finite number this type can represent
source§

fn max_value() -> Self

Returns the largest finite number this type can represent
source§

impl CheckedAdd for PerU16

source§

fn checked_add(&self, rhs: &Self) -> Option<Self>

Adds two numbers, checking for overflow. If overflow happens, None is returned.
source§

impl CheckedMul for PerU16

§Note

CheckedMul will never fail for PerThings.

source§

fn checked_mul(&self, rhs: &Self) -> Option<Self>

Multiplies two numbers, checking for underflow or overflow. If underflow or overflow happens, None is returned.
source§

impl CheckedSub for PerU16

source§

fn checked_sub(&self, v: &Self) -> Option<Self>

Subtracts two numbers, checking for underflow. If underflow happens, None is returned.
source§

impl Clone for PerU16

source§

fn clone(&self) -> PerU16

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl CompactAs for PerU16

Implementation makes any compact encoding of PerThing::Inner valid, when decoding it will saturate up to PerThing::ACCURACY.

§

type As = u16

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

fn encode_as(&self) -> &Self::As

Returns the compact-encodable type.
source§

fn decode_from(x: Self::As) -> Result<Self, Error>

Decode Self from the compact-decoded type.
source§

impl Debug for PerU16

source§

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

Formats the value using the given formatter. Read more
source§

impl Decode for PerU16

source§

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.
source§

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self> ) -> Result<DecodeFinished, Error>
where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
source§

fn skip<I>(input: &mut I) -> Result<(), Error>
where I: Input,

Attempt to skip the encoded value from input. Read more
source§

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more
source§

impl Default for PerU16

source§

fn default() -> Self

Returns the “default value” for a type. Read more
source§

impl<'de> Deserialize<'de> for PerU16

source§

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

Deserialize this value from the given Serde deserializer. Read more
source§

impl<N> Div<N> for PerU16
where u16: TryFrom<N>,

§

type Output = PerU16

The resulting type after applying the / operator.
source§

fn div(self, b: N) -> Self::Output

Performs the / operation. Read more
source§

impl Div for PerU16

§

type Output = PerU16

The resulting type after applying the / operator.
source§

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

Performs the / operation. Read more
source§

impl Encode for PerU16

source§

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more
source§

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )

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

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

Convert self to an owned vector.
source§

fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>( &self, f: __CodecUsingEncodedCallback ) -> __CodecOutputReturn

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

fn encoded_size(&self) -> usize

Calculates the encoded size. Read more
source§

impl From<Compact<PerU16>> for PerU16

source§

fn from(x: Compact<PerU16>) -> PerU16

Converts to this type from the input type.
source§

impl MaxEncodedLen for PerU16

source§

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.
source§

impl<N> Mul<N> for PerU16
where N: Clone + UniqueSaturatedInto<u16> + Rem<N, Output = N> + Div<N, Output = N> + Mul<N, Output = N> + Add<N, Output = N> + Unsigned, u16: Into<N>,

Non-overflow multiplication.

This is tailored to be used with a balance type.

§

type Output = N

The resulting type after applying the * operator.
source§

fn mul(self, b: N) -> Self::Output

Performs the * operation. Read more
source§

impl Mul for PerU16

§

type Output = PerU16

The resulting type after applying the * operator.
source§

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

Performs the * operation. Read more
source§

impl One for PerU16

source§

fn one() -> Self

Returns the multiplicative identity element of Self, 1. Read more
source§

fn set_one(&mut self)

Sets self to the multiplicative identity element of Self, 1.
source§

fn is_one(&self) -> bool
where Self: PartialEq,

Returns true if self is equal to the multiplicative identity. Read more
source§

impl Ord for PerU16

source§

fn cmp(&self, other: &PerU16) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

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

Compares and returns the maximum of two values. Read more
1.21.0 · source§

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

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
source§

impl PartialEq for PerU16

source§

fn eq(&self, other: &PerU16) -> bool

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl PartialOrd for PerU16

source§

fn partial_cmp(&self, other: &PerU16) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

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

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

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 more
1.0.0 · source§

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

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

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

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

impl PerThing for PerU16

source§

fn deconstruct(self) -> Self::Inner

Consume self and return the number of parts per thing.

source§

fn from_parts(parts: Self::Inner) -> Self

Build this type from a number of parts per thing.

source§

fn from_float(x: f64) -> Self

NOTE: saturate to 0 or 1 if x is beyond [0, 1]

§

type Inner = u16

The data type used to build this per-thingy.
§

type Upper = u32

A data type larger than Self::Inner, used to avoid overflow in some computations. It must be able to compute ACCURACY^2.
source§

const ACCURACY: Self::Inner = {transmute(0xffff): <per_things::PerU16 as per_things::PerThing>::Inner}

The accuracy of this type.
source§

fn from_rational_with_rounding<N>(p: N, q: N, r: Rounding) -> Result<Self, ()>
where N: Clone + Ord + TryInto<Self::Inner> + TryInto<Self::Upper> + Div<N, Output = N> + Rem<N, Output = N> + Add<N, Output = N> + AddAssign<N> + Unsigned + Zero + One + MultiplyRational, Self::Inner: Into<N>,

Approximate the fraction p/q into a per-thing fraction. Read more
source§

fn zero() -> Self

Equivalent to Self::from_parts(0).
source§

fn is_zero(&self) -> bool

Return true if this is nothing.
source§

fn one() -> Self

Equivalent to Self::from_parts(Self::ACCURACY).
source§

fn is_one(&self) -> bool

Return true if this is one.
source§

fn less_epsilon(self) -> Self

Return the next lower value to self or self if it is already zero.
source§

fn try_less_epsilon(self) -> Result<Self, Self>

Return the next lower value to self or an error with the same value if self is already zero.
source§

fn plus_epsilon(self) -> Self

Return the next higher value to self or self if it is already one.
source§

fn try_plus_epsilon(self) -> Result<Self, Self>

Return the next higher value to self or an error with the same value if self is already one.
source§

fn from_percent(x: Self::Inner) -> Self

Build this type from a percent. Equivalent to Self::from_parts(x * Self::ACCURACY / 100) but more accurate and can cope with potential type overflows.
source§

fn square(self) -> Self

Return the product of multiplication of this value by itself.
source§

fn left_from_one(self) -> Self

Return the part left when self is saturating-subtracted from Self::one().
source§

fn mul_floor<N>(self, b: N) -> N
where N: MultiplyArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,

Multiplication that always rounds down to a whole number. The standard Mul rounds to the nearest whole number. Read more
source§

fn mul_ceil<N>(self, b: N) -> N
where N: MultiplyArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,

Multiplication that always rounds the result up to a whole number. The standard Mul rounds to the nearest whole number. Read more
source§

fn saturating_reciprocal_mul<N>(self, b: N) -> N
where N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,

Saturating multiplication by the reciprocal of self. The result is rounded to the nearest whole number and saturates at the numeric bounds instead of overflowing. Read more
source§

fn saturating_reciprocal_mul_floor<N>(self, b: N) -> N
where N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,

Saturating multiplication by the reciprocal of self. The result is rounded down to the nearest whole number and saturates at the numeric bounds instead of overflowing. Read more
source§

fn saturating_reciprocal_mul_ceil<N>(self, b: N) -> N
where N: ReciprocalArg + UniqueSaturatedInto<Self::Inner>, Self::Inner: Into<N>,

Saturating multiplication by the reciprocal of self. The result is rounded up to the nearest whole number and saturates at the numeric bounds instead of overflowing. Read more
source§

fn from_fraction(x: f64) -> Self

👎Deprecated: Use from_float instead
Same as Self::from_float.
source§

fn from_rational<N>(p: N, q: N) -> Self
where N: RationalArg + TryInto<Self::Inner> + TryInto<Self::Upper>, Self::Inner: Into<N>,

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

fn from_rational_approximation<N>(p: N, q: N) -> Self
where N: RationalArg + TryInto<Self::Inner> + TryInto<Self::Upper>, Self::Inner: Into<N>,

👎Deprecated: Use from_rational instead
Same as Self::from_rational.
source§

impl Pow<usize> for PerU16

§

type Output = PerU16

The result after applying the operator.
source§

fn pow(self, exp: usize) -> Self::Output

Returns self to the power rhs. Read more
source§

impl Saturating for PerU16

source§

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

Saturating addition. Compute self + rhs, saturating at the numeric bounds instead of overflowing. This operation is lossless if it does not saturate.

source§

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

Saturating subtraction. Compute self - rhs, saturating at the numeric bounds instead of overflowing. This operation is lossless if it does not saturate.

source§

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

Saturating multiply. Compute self * rhs, saturating at the numeric bounds instead of overflowing. This operation is lossy.

source§

fn saturating_pow(self, exp: usize) -> Self

Saturating exponentiation. Computes self.pow(exp), saturating at the numeric bounds instead of overflowing. This operation is lossy.

source§

fn saturating_less_one(self) -> Self
where Self: One,

Decrement self by one, saturating at zero.
source§

fn saturating_plus_one(self) -> Self
where Self: One,

Increment self by one, saturating at the numeric bounds instead of overflowing.
source§

fn saturating_inc(&mut self)
where Self: One,

Increment self by one, saturating.
source§

fn saturating_dec(&mut self)
where Self: One,

Decrement self by one, saturating at zero.
source§

fn saturating_accrue(&mut self, amount: Self)
where Self: One,

Increment self by some amount, saturating.
source§

fn saturating_reduce(&mut self, amount: Self)
where Self: One,

Decrement self by some amount, saturating at zero.
source§

impl SaturatingAdd for PerU16

source§

fn saturating_add(&self, v: &Self) -> Self

Saturating addition. Computes self + other, saturating at the relevant high or low boundary of the type.
source§

impl SaturatingSub for PerU16

source§

fn saturating_sub(&self, v: &Self) -> Self

Saturating subtraction. Computes self - other, saturating at the relevant high or low boundary of the type.
source§

impl Serialize for PerU16

source§

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

Serialize this value into the given Serde serializer. Read more
source§

impl Sub for PerU16

§

type Output = PerU16

The resulting type after applying the - operator.
source§

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

Performs the - operation. Read more
source§

impl TypeInfo for PerU16

§

type Identity = PerU16

The type identifying for which type info is provided. Read more
source§

fn type_info() -> Type

Returns the static type identifier for Self.
source§

impl Zero for PerU16

source§

fn zero() -> Self

Returns the additive identity element of Self, 0. Read more
source§

fn is_zero(&self) -> bool

Returns true if self is equal to the additive identity.
source§

fn set_zero(&mut self)

Sets self to the additive identity element of Self, 0.
source§

impl Copy for PerU16

source§

impl EncodeLike for PerU16

source§

impl Eq for PerU16

source§

impl StructuralPartialEq for PerU16

Auto Trait Implementations§

§

impl Freeze for PerU16

§

impl RefUnwindSafe for PerU16

§

impl Send for PerU16

§

impl Sync for PerU16

§

impl Unpin for PerU16

§

impl UnwindSafe for PerU16

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> DecodeAll for T
where T: Decode,

source§

fn decode_all(input: &mut &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more
source§

impl<T> DecodeLimit for T
where T: Decode,

source§

fn decode_all_with_depth_limit( limit: u32, input: &mut &[u8] ) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more
source§

fn decode_with_depth_limit<I>(limit: u32, input: &mut I) -> Result<T, Error>
where I: Input,

Decode Self with the given maximum recursion depth and advance input by the number of bytes consumed. Read more
source§

impl<T> EnsureAdd for T
where T: EnsureAddAssign,

source§

fn ensure_add(self, v: Self) -> Result<Self, ArithmeticError>

Adds two numbers, checking for overflow. Read more
source§

impl<T> EnsureAddAssign for T
where T: CheckedAdd + PartialOrd + Zero,

source§

fn ensure_add_assign(&mut self, v: Self) -> Result<(), ArithmeticError>

Adds two numbers overwriting the left hand one, checking for overflow. Read more
source§

impl<T, S> EnsureFrom<S> for T
where T: TryFrom<S> + PartialOrd + Zero, S: PartialOrd + Zero,

source§

fn ensure_from(other: T) -> Result<Self, ArithmeticError>

Performs the conversion returning an ArithmeticError if fails. Read more
source§

impl<T, S> EnsureInto<S> for T
where T: TryInto<S> + PartialOrd + Zero, S: PartialOrd + Zero,

source§

fn ensure_into(self) -> Result<T, ArithmeticError>

Performs the conversion returning an ArithmeticError if fails. Read more
source§

impl<T> EnsureMul for T
where T: EnsureMulAssign,

source§

fn ensure_mul(self, v: Self) -> Result<Self, ArithmeticError>

Multiplies two numbers, checking for overflow. Read more
source§

impl<T> EnsureMulAssign for T
where T: CheckedMul + PartialOrd + Zero,

source§

fn ensure_mul_assign(&mut self, v: Self) -> Result<(), ArithmeticError>

Multiplies two numbers overwriting the left hand one, checking for overflow. Read more
source§

impl<T> EnsureSub for T
where T: EnsureSubAssign,

source§

fn ensure_sub(self, v: Self) -> Result<Self, ArithmeticError>

Subtracts two numbers, checking for overflow. Read more
source§

impl<T> EnsureSubAssign for T
where T: CheckedSub + PartialOrd + Zero,

source§

fn ensure_sub_assign(&mut self, v: Self) -> Result<(), ArithmeticError>

Subtracts two numbers overwriting the left hand one, checking for overflow. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> HasCompact for T
where T: 'static, Compact<T>: for<'a> EncodeAsRef<'a, T> + Decode + From<T> + Into<T>,

§

type Type = Compact<T>

The compact type; this can be
source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> KeyedVec for T
where T: Codec,

source§

fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8>

Return an encoding of Self prepended by given slice.
source§

impl<T> LowerBounded for T
where T: Bounded,

source§

fn min_value() -> T

Returns the smallest finite number this type can represent
source§

impl<T> SaturatedConversion for T

source§

fn saturated_from<T>(t: T) -> Self
where Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more
source§

fn saturated_into<T>(self) -> T
where Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more
source§

impl<T> ThresholdOrd<T> for T
where T: Ord + PartialOrd + Copy + Clone + Zero + Saturating,

source§

fn tcmp(&self, other: &T, threshold: T) -> Ordering

Compare if self is threshold greater or less than other.
source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T, S> UniqueSaturatedFrom<T> for S
where S: TryFrom<T> + Bounded,

source§

fn unique_saturated_from(t: T) -> S

Convert from a value of T into an equivalent instance of Self.
source§

impl<T, S> UniqueSaturatedInto<T> for S
where T: Bounded, S: TryInto<T>,

source§

fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
source§

impl<T> UpperBounded for T
where T: Bounded,

source§

fn max_value() -> T

Returns the largest finite number this type can represent
source§

impl<S> Codec for S
where S: Decode + Encode,

source§

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

source§

impl<T> EncodeLike<&&T> for T
where T: Encode,

source§

impl<T> EncodeLike<&T> for T
where T: Encode,

source§

impl<T> EncodeLike<&mut T> for T
where T: Encode,

source§

impl<T> EncodeLike<Arc<T>> for T
where T: Encode,

source§

impl<T> EncodeLike<Box<T>> for T
where T: Encode,

source§

impl<'a, T> EncodeLike<Cow<'a, T>> for T
where T: ToOwned + Encode,

source§

impl<T> EncodeLike<Rc<T>> for T
where T: Encode,

source§

impl<S> FullCodec for S
where S: Decode + FullEncode,

source§

impl<S> FullEncode for S
where S: Encode + EncodeLike,

source§

impl<T> JsonSchemaMaybe for T

source§

impl<T> StaticTypeInfo for T
where T: TypeInfo + 'static,