Struct U256 

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

256-bit integer for Bitcoin target / chainwork calculations (256-bit limb layout).

Implementations

impl U256

pub fn zero() -> U256

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

Serialize as 32 little-endian bytes (Bitcoin uint256 wire layout).

pub fn gbt_target_hex(&self) -> String

Bitcoin RPC GetHex() / getblocktemplate target (byte-reversed display hex).

pub fn low_u128(&self) -> u128

Low 128 bits (legacy BlockTemplate.target summary field).

pub fn from_u128(value: u128) -> U256

Construct from the low 128 bits (high words zero).

pub fn one() -> U256

pub fn is_zero(&self) -> bool

pub fn not(self) -> U256

pub fn checked_add(self, other: U256) -> Option<U256>

pub fn saturating_add(self, other: U256) -> U256

pub fn div(self, divisor: U256) -> U256

Full-width unsigned division for 256-bit chainwork arithmetic.

pub fn to_be_bytes(self) -> [u8; 32]

Serialize as 32 big-endian bytes (Bitcoin RPC chainwork display order).

pub fn from_be_bytes(bytes: &[u8; 32]) -> U256

Parse 32 big-endian bytes (RPC / chainstate cache layout).

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 Copy for U256

impl Debug for U256

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

Formats the value using the given formatter.

impl Eq for U256

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 StructuralPartialEq for U256