[]Struct types_primitive::U256

#[repr(C)]
pub struct U256(pub [u64; 4]);

Little-endian large integer type 256-bit unsigned integer.

Methods

impl U256

pub const MAX: U256

Maximum value.

pub fn from_dec_str(value: &str) -> Result<Self, FromDecStrErr>

Convert from a decimal string.

pub fn low_u32(&self) -> u32

Conversion to u32

pub fn low_u64(&self) -> u64

Low word (u64)

pub fn as_u32(&self) -> u32

Conversion to u32 with overflow checking

Panics

Panics if the number is larger than 2^32.

pub fn as_u64(&self) -> u64

Conversion to u64 with overflow checking

Panics

Panics if the number is larger than u64::max_value().

pub fn as_usize(&self) -> usize

Conversion to usize with overflow checking

Panics

Panics if the number is larger than usize::max_value().

pub fn is_zero(&self) -> bool

Whether this is zero.

pub fn bits(&self) -> usize

Return the least number of bits needed to represent the number

pub fn bit(&self, index: usize) -> bool

Return if specific bit is set.

Panics

Panics if index exceeds the bit width of the number.

pub fn leading_zeros(&self) -> u32

Returns the number of leading zeros in the binary representation of self.

pub fn trailing_zeros(&self) -> u32

Returns the number of leading zeros in the binary representation of self.

pub fn byte(&self, index: usize) -> u8

Return specific byte.

Panics

Panics if index exceeds the byte width of the number.

pub fn to_big_endian(&self, bytes: &mut [u8])

Write to the slice in big-endian format.

pub fn to_little_endian(&self, bytes: &mut [u8])

Write to the slice in little-endian format.

pub fn exp10(n: usize) -> Self

Create 10**n as this type.

Panics

Panics if the result overflows the type.

pub fn zero() -> Self

Zero (additive identity) of this type.

pub fn one() -> Self

One (multiplicative identity) of this type.

pub fn max_value() -> Self

The maximum value which can be inhabited by this type.

pub fn pow(self, expon: Self) -> Self

Fast exponentation by squaring https://en.wikipedia.org/wiki/Exponentiation_by_squaring

Panics

Panics if the result overflows the type.

pub fn overflowing_pow(self, expon: Self) -> (Self, bool)

Fast exponentation by squaring. Returns result and overflow flag.

pub fn overflowing_add(self, other: U256) -> (U256, bool)

Add with overflow.

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

Addition which saturates at the maximum value (Self::max_value()).

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

Checked addition. Returns None if overflow occurred.

pub fn overflowing_sub(self, other: U256) -> (U256, bool)

Subtraction which underflows and returns a flag if it does.

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

Subtraction which saturates at zero.

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

Checked subtraction. Returns None if overflow occurred.

pub fn overflowing_mul(self, other: U256) -> (U256, bool)

Multiply with overflow, returning a flag if it does.

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

Multiplication which saturates at the maximum value..

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

Checked multiplication. Returns None if overflow occurred.

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

Checked division. Returns None if other == 0.

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

Checked modulus. Returns None if other == 0.

pub fn overflowing_neg(self) -> (U256, bool)

Negation with overflow.

pub fn checked_neg(self) -> Option<U256>

Checked negation. Returns None unless self == 0.

pub fn from_big_endian(slice: &[u8]) -> Self

Converts from big endian representation bytes in memory.

pub fn from_little_endian(slice: &[u8]) -> Self

Converts from little endian representation bytes in memory.

impl U256

pub fn low_u128(&self) -> u128

Low 2 words (u128)

pub fn as_u128(&self) -> u128

Conversion to u128 with overflow checking

Panics

Panics if the number is larger than 2^128.

impl U256[src]

pub fn full_mul(self, other: U256) -> U512[src]

Multiplies two 256-bit integers to produce full 512-bit integer No overflow possible

Trait Implementations

impl Copy for U256

impl PartialEq<U256> for U256

impl AsRef<U256> for U256

impl Default for U256

impl Clone for U256

fn clone_from(&mut self, source: &Self)
1.0.0
[src]

Performs copy-assignment from source. Read more

impl Ord for U256

fn max(self, other: Self) -> Self
1.21.0
[src]

Compares and returns the maximum of two values. Read more

fn min(self, other: Self) -> Self
1.21.0
[src]

Compares and returns the minimum of two values. Read more

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

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval. Read more

impl<'a> From<&'a U256> for U256

impl From<U256> for [u8; 32]

impl From<[u8; 32]> for U256

impl<'a> From<&'a [u8; 32]> for U256

impl From<u64> for U256

impl From<u8> for U256

impl From<u16> for U256

impl From<u32> for U256

impl From<usize> for U256

impl From<i64> for U256

impl From<i8> for U256

impl From<i16> for U256

impl From<i32> for U256

impl From<isize> for U256

impl<'a> From<&'a [u8]> for U256

impl From<&'static str> for U256

impl From<u128> for U256

impl From<i128> for U256

impl From<U256> for U512[src]

impl From<U512> for U256[src]

impl<'a> From<&'a U256> for U512[src]

impl<'a> From<&'a U512> for U256[src]

impl Eq for U256

impl PartialOrd<U256> for U256

#[must_use]
fn lt(&self, other: &Rhs) -> bool
1.0.0
[src]

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

#[must_use]
fn le(&self, other: &Rhs) -> bool
1.0.0
[src]

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

#[must_use]
fn gt(&self, other: &Rhs) -> bool
1.0.0
[src]

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

#[must_use]
fn ge(&self, other: &Rhs) -> bool
1.0.0
[src]

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

impl Display for U256

impl Debug for U256

impl<T> Sub<T> for U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the - operator.

impl<'a, T> Sub<T> for &'a U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the - operator.

impl<T> Div<T> for U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the / operator.

impl<'a, T> Div<T> for &'a U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the / operator.

impl<T> Add<T> for U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the + operator.

impl<'a, T> Add<T> for &'a U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the + operator.

impl Mul<u32> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<u32> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<u8> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a u8> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a u8> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<u8> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<u16> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a u16> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a u16> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<u16> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<u64> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a u64> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a u64> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<u64> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<usize> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a usize> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a usize> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<usize> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<i8> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a i8> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a i8> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<i8> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<i16> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a i16> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a i16> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<i16> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<i64> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a i64> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a i64> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<i64> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<isize> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a isize> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a isize> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<isize> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl Mul<U256> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a U256> for U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<&'a U256> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<'a> Mul<U256> for &'a U256

type Output = U256

The resulting type after applying the * operator.

impl<T> Rem<T> for U256 where
    T: Into<U256> + Copy

type Output = U256

The resulting type after applying the % operator.

impl<'a, T> Rem<T> for &'a U256 where
    T: Into<U256> + Copy

type Output = U256

The resulting type after applying the % operator.

impl AddAssign<U256> for U256

impl SubAssign<U256> for U256

impl MulAssign<u32> for U256

impl MulAssign<u8> for U256

impl MulAssign<u16> for U256

impl MulAssign<u64> for U256

impl MulAssign<usize> for U256

impl MulAssign<i8> for U256

impl MulAssign<i16> for U256

impl MulAssign<i64> for U256

impl MulAssign<isize> for U256

impl MulAssign<U256> for U256

impl<T> DivAssign<T> for U256 where
    T: Into<U256>, 

impl<T> RemAssign<T> for U256 where
    T: Into<U256> + Copy

impl Not for U256

type Output = U256

The resulting type after applying the ! operator.

impl BitAnd<U256> for U256

type Output = U256

The resulting type after applying the & operator.

impl BitOr<U256> for U256

type Output = U256

The resulting type after applying the | operator.

impl BitXor<U256> for U256

type Output = U256

The resulting type after applying the ^ operator.

impl<T> Shl<T> for U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the << operator.

impl<'a, T> Shl<T> for &'a U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the << operator.

impl<T> Shr<T> for U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the >> operator.

impl<'a, T> Shr<T> for &'a U256 where
    T: Into<U256>, 

type Output = U256

The resulting type after applying the >> operator.

impl<T> ShlAssign<T> for U256 where
    T: Into<U256>, 

impl<T> ShrAssign<T> for U256 where
    T: Into<U256>, 

impl Hash for U256

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher
1.3.0
[src]

Feeds a slice of this type into the given [Hasher]. Read more

impl FromStr for U256

type Err = FromHexError

The associated error which can be returned from parsing.

impl LowerHex for U256

impl Encode for U256

fn encode_to<T>(&self, dest: &mut T) where
    T: Output, 

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

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

Convert self to an owned vector.

impl Decode for U256

Auto Trait Implementations

impl Send for U256

impl Sync for U256

Blanket Implementations

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
[src]

impl<T> From for T[src]

impl<T, U> Into for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> BorrowMut for T where
    T: ?Sized
[src]

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

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