Struct U256 

pub struct U256(/* private fields */);

A 256-bit unsigned integer matching Move’s u256 primitive type.

The in-memory layout is 32 bytes in little-endian order. When the serde feature is enabled, the BCS encoding is those same 32 little-endian bytes, matching the on-chain representation used by Move.

Implementations

impl U256

pub const ZERO: Self

The additive identity, 0.

pub const ONE: Self

The multiplicative identity, 1.

pub const fn from_digits(digits: [u8; 32]) -> Self

Build a U256 directly from its 32 little-endian digits.

pub const fn digits(&self) -> &[u8; 32]

Borrow the underlying 32 bytes in little-endian order.

pub const fn from_le(value: Self) -> Self

Reverse the byte order of value on big-endian targets; identity on little-endian targets.

pub const fn from_be(value: Self) -> Self

Reverse the byte order of value on little-endian targets; identity on big-endian targets.

pub const fn to_le(self) -> Self

Reverse the byte order on big-endian targets; identity on little-endian targets.

pub const fn to_be(self) -> Self

Reverse the byte order on little-endian targets; identity on big-endian targets.

pub const fn from_str_radix(s: &str, radix: u32) -> Result<Self, U256ParseError>

Parse a string in the given radix. radix must be in the range 2..=36.

pub fn to_str_radix(&self, radix: u32) -> String

Render the value in the given radix. radix must be in the range 2..=36.

pub fn from_radix_be(buf: &[u8], radix: u32) -> Option<Self>

Build a U256 from a slice of big-endian digits in the given radix. Returns None if any digit is out of range for radix or if the resulting value would overflow 256 bits.

pub fn to_radix_be(&self, radix: u32) -> Vec<u8>

Render the value as a sequence of big-endian digits in the given radix.

pub fn from_le_slice(slice: &[u8]) -> Option<Self>

Build a U256 from up to 32 little-endian bytes. Returns None if the slice is longer than 32 bytes.

Trait Implementations

impl Clone for U256

fn clone(&self) -> U256

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for U256

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

Formats the value using the given formatter.

impl Default for U256

fn default() -> U256

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for U256

Available on crate feature serde only.

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for U256

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

Formats the value using the given formatter.

impl From<u64> for U256

fn from(value: u64) -> Self

Converts to this type from the input type.

impl From<u8> for U256

fn from(value: u8) -> Self

Converts to this type from the input type.

impl FromStr for U256

type Err = U256ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for U256

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for U256

fn cmp(&self, other: &U256) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for U256

fn eq(&self, other: &U256) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for U256

fn partial_cmp(&self, other: &U256) -> Option<Ordering>

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for U256

Available on crate feature serde only.

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Copy for U256

impl Eq for U256

impl StructuralPartialEq for U256