hopr_lib

Struct WinningProbability

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

Represents a ticket winning probability.

It holds the modified IEEE-754 but behaves like a reduced precision float. It intentionally does not implement Ord or Eq, as it can be only approximately compared.

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impl WinningProbability

pub const ALWAYS: WinningProbability

100% winning probability

pub const EPSILON: f64 = 1.0E-8f64

pub const NEVER: WinningProbability

0% winning probability.

pub fn as_luck(&self) -> u64

Converts winning probability to an unsigned integer (luck).

pub fn as_encoded(&self) -> [u8; 7]

Convenience function to convert to internal probability representation.

pub fn as_f64(&self) -> f64

Convert probability to a float.

pub fn try_from_f64(win_prob: f64) -> Result<WinningProbability, CoreTypesError>

Tries to get probability from a float.

pub fn approx_cmp(&self, other: &WinningProbability) -> Ordering

Performs approximate comparison up to Self::EPSILON.

pub fn approx_eq(&self, other: &WinningProbability) -> bool

Performs approximate equality comparison up to Self::EPSILON.

pub fn min(&self, other: &WinningProbability) -> WinningProbability

Gets the minimum of two winning probabilities.

pub fn max(&self, other: &WinningProbability) -> WinningProbability

Gets the maximum of two winning probabilities.

Trait Implementations§

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impl AsRef<[u8]> for WinningProbability

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fn as_ref(&self) -> &[u8] ⓘ

Converts this type into a shared reference of the (usually inferred) input type.
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impl BytesRepresentable for WinningProbability

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const SIZE: usize = 7usize

Size of the encoded byte array.
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fn into_boxed(self) -> Box<[u8]>

Convenience function to copy this type’s binary representation into a Box.
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impl Clone for WinningProbability

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fn clone(&self) -> WinningProbability

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for WinningProbability

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

Formats the value using the given formatter. Read more
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impl Default for WinningProbability

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fn default() -> WinningProbability

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for WinningProbability

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

Deserialize this value from the given Serde deserializer. Read more
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impl Display for WinningProbability

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

Formats the value using the given formatter. Read more
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impl<'a> From<&'a [u8; 7]> for WinningProbability

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fn from(value: &'a [u8; 7]) -> WinningProbability

Converts to this type from the input type.
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impl From<[u8; 7]> for WinningProbability

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fn from(value: [u8; 7]) -> WinningProbability

Converts to this type from the input type.
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impl From<WinningProbability> for [u8; 7]

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fn from(value: WinningProbability) -> [u8; 7]

Converts to this type from the input type.
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impl From<u64> for WinningProbability

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fn from(value: u64) -> WinningProbability

Converts to this type from the input type.
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impl PartialEq<f64> for WinningProbability

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fn eq(&self, other: &f64) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for WinningProbability

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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. Read more
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impl<'a> TryFrom<&'a [u8]> for WinningProbability

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type Error = GeneralError

The type returned in the event of a conversion error.
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fn try_from( value: &'a [u8], ) -> Result<WinningProbability, <WinningProbability as TryFrom<&'a [u8]>>::Error>

Performs the conversion.
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impl TryFrom<f64> for WinningProbability

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type Error = CoreTypesError

The type returned in the event of a conversion error.
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fn try_from( value: f64, ) -> Result<WinningProbability, <WinningProbability as TryFrom<f64>>::Error>

Performs the conversion.
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impl Copy for WinningProbability

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