Struct U256 

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

Little-endian large integer type

Tuple Fields

0: [u64; 4]

Implementations

impl U256

const WORD_BITS: usize = 64

pub const MAX: U256

Maximum value.

pub fn from_str_radix(txt: &str, radix: u32) -> Result<Self, FromStrRadixErr>

Converts a string slice in a given base to an integer. Only supports radixes of 10 and 16.

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

Convert from a decimal string.

pub const fn low_u32(&self) -> u32

Conversion to u32

pub const 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 const fn is_zero(&self) -> bool

Whether this is zero.

fn fits_word(&self) -> bool

pub fn bits(&self) -> usize

Return the least number of bits needed to represent the number

pub const 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 trailing zeros in the binary representation of self.

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

Return specific byte. Byte 0 is the least significant value (ie~ little endian).

Panics

Panics if index exceeds the byte width of the number.

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

Convert to big-endian bytes.

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

Write to the slice in big-endian format.

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

Convert to little-endian bytes.

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

pub fn exp10(n: usize) -> Self

Create 10**n as this type.

Panics

Panics if the result overflows the type.

pub const fn zero() -> Self

Zero (additive identity) of this type.

pub const fn one() -> Self

One (multiplicative identity) of this type.

pub const fn max_value() -> Self

The maximum value which can be inhabited by this type.

fn full_shl(self, shift: u32) -> [u64; 5]

fn full_shr(u: [u64; 5], shift: u32) -> Self

fn full_mul_u64(self, by: u64) -> [u64; 5]

fn div_mod_small(self, other: u64) -> (Self, Self)

fn div_mod_knuth(self, v: Self, n: usize, m: usize) -> (Self, Self)

fn words(bits: usize) -> usize

pub fn div_mod(self, other: Self) -> (Self, Self)

Returns a pair (self / other, self % other).

Panics

Panics if other is zero.

pub fn integer_sqrt(&self) -> Self

Compute the highest n such that n * n <= self.

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

Fast exponentiation 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 exponentiation by squaring. Returns result and overflow flag.

pub fn checked_pow(self, expon: U256) -> Option<U256>

Checked exponentiation. Returns None if overflow occurred.

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

Addition which overflows and returns a flag if it does.

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

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

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 abs_diff(self, other: U256) -> U256

Computes the absolute difference between self and other.

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.

fn div_mod_word(hi: u64, lo: u64, y: u64) -> (u64, u64)

fn add_slice(a: &mut [u64], b: &[u64]) -> bool

fn sub_slice(a: &mut [u64], b: &[u64]) -> bool

fn binop_slice( a: &mut [u64], b: &[u64], binop: impl Fn(u64, u64) -> (u64, bool) + Copy, ) -> bool

fn binop_carry( a: u64, b: u64, c: bool, binop: impl Fn(u64, u64) -> (u64, bool), ) -> (u64, bool)

const fn mul_u64(a: u64, b: u64, carry: u64) -> (u64, u64)

const fn split(a: u64) -> (u64, u64)

const fn split_u128(a: u128) -> (u64, u64)

fn overflowing_mul_u64(self, other: u64) -> (Self, u64)

Overflowing multiplication by u64. Returns the result and carry.

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.

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

impl U256

pub const 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.

Trait Implementations

impl<'a, T> Add<T> for &'a U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the + operator.

fn add(self, other: T) -> U256

Performs the + operation.

impl<T> Add<T> for U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the + operator.

fn add(self, other: T) -> U256

Performs the + operation.

impl AddAssign for U256

fn add_assign(&mut self, other: U256)

Performs the += operation.

impl AsRef<[u64]> for U256

Get a reference to the underlying little-endian words.

fn as_ref(&self) -> &[u64]

Converts this type into a shared reference of the (usually inferred) input type.

impl BitAnd for U256

type Output = U256

The resulting type after applying the & operator.

fn bitand(self, other: U256) -> U256

Performs the & operation.

impl BitAndAssign for U256

fn bitand_assign(&mut self, rhs: U256)

Performs the &= operation.

impl BitOr for U256

type Output = U256

The resulting type after applying the | operator.

fn bitor(self, other: U256) -> U256

Performs the | operation.

impl BitOrAssign for U256

fn bitor_assign(&mut self, rhs: U256)

Performs the |= operation.

impl BitXor for U256

type Output = U256

The resulting type after applying the ^ operator.

fn bitxor(self, other: U256) -> U256

Performs the ^ operation.

impl BitXorAssign for U256

fn bitxor_assign(&mut self, rhs: U256)

Performs the ^= operation.

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() -> Self

Returns the “default value” for a type.

impl Display for U256

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

Formats the value using the given formatter.

impl<'a, T> Div<T> for &'a U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the / operator.

fn div(self, other: T) -> U256

Performs the / operation.

impl<T> Div<T> for U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the / operator.

fn div(self, other: T) -> U256

Performs the / operation.

impl<T> DivAssign<T> for U256

where T: Into<U256>,

fn div_assign(&mut self, other: T)

Performs the /= operation.

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

fn from(x: &'a U256) -> U256

Converts to this type from the input type.

impl From<&'static str> for U256

fn from(s: &'static str) -> Self

Converts to this type from the input type.

impl From<ExpandedDifficulty> for U256

fn from(value: ExpandedDifficulty) -> Self

Converts to this type from the input type.

impl From<U256> for ExpandedDifficulty

fn from(value: U256) -> Self

Converts to this type from the input type.

impl From<i128> for U256

fn from(value: i128) -> U256

Converts to this type from the input type.

impl From<i16> for U256

fn from(value: i16) -> U256

Converts to this type from the input type.

impl From<i32> for U256

fn from(value: i32) -> U256

Converts to this type from the input type.

impl From<i64> for U256

fn from(value: i64) -> U256

Converts to this type from the input type.

impl From<i8> for U256

fn from(value: i8) -> U256

Converts to this type from the input type.

impl From<isize> for U256

fn from(value: isize) -> U256

Converts to this type from the input type.

impl From<u128> for U256

fn from(value: u128) -> U256

Converts to this type from the input type.

impl From<u16> for U256

fn from(value: u16) -> U256

Converts to this type from the input type.

impl From<u32> for U256

fn from(value: u32) -> U256

Converts to this type from the input type.

impl From<u64> for U256

fn from(value: u64) -> U256

Converts to this type from the input type.

impl From<u8> for U256

fn from(value: u8) -> U256

Converts to this type from the input type.

impl From<usize> for U256

fn from(value: usize) -> U256

Converts to this type from the input type.

impl FromStr for U256

type Err = FromHexError

The associated error which can be returned from parsing.

fn from_str(value: &str) -> Result<U256, 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 LowerHex for U256

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

Formats the value using the given formatter.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a U256) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i16) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i16) -> U256

Performs the * operation.

impl<'a> Mul<&'a i32> for &'a U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i32) -> U256

Performs the * operation.

impl<'a> Mul<&'a i32> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i32) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i64) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i64) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i8) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a i8) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a isize) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a isize) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u16) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u16) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u32) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u32) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u64) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u64) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u8) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a u8) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a usize) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a usize) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: U256) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i16) -> U256

Performs the * operation.

impl Mul<i16> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i16) -> U256

Performs the * operation.

impl<'a> Mul<i32> for &'a U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i32) -> U256

Performs the * operation.

impl Mul<i32> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i32) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i64) -> U256

Performs the * operation.

impl Mul<i64> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i64) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i8) -> U256

Performs the * operation.

impl Mul<i8> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: i8) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: isize) -> U256

Performs the * operation.

impl Mul<isize> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: isize) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u16) -> U256

Performs the * operation.

impl Mul<u16> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u16) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u32) -> U256

Performs the * operation.

impl Mul<u32> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u32) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u64) -> U256

Performs the * operation.

impl Mul<u64> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u64) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u8) -> U256

Performs the * operation.

impl Mul<u8> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: u8) -> U256

Performs the * operation.

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

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: usize) -> U256

Performs the * operation.

impl Mul<usize> for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: usize) -> U256

Performs the * operation.

impl<'a> Mul for &'a U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: &'a U256) -> U256

Performs the * operation.

impl Mul for U256

type Output = U256

The resulting type after applying the * operator.

fn mul(self, other: U256) -> U256

Performs the * operation.

impl MulAssign<i16> for U256

fn mul_assign(&mut self, other: i16)

Performs the *= operation.

impl MulAssign<i32> for U256

fn mul_assign(&mut self, other: i32)

Performs the *= operation.

impl MulAssign<i64> for U256

fn mul_assign(&mut self, other: i64)

Performs the *= operation.

impl MulAssign<i8> for U256

fn mul_assign(&mut self, other: i8)

Performs the *= operation.

impl MulAssign<isize> for U256

fn mul_assign(&mut self, other: isize)

Performs the *= operation.

impl MulAssign<u16> for U256

fn mul_assign(&mut self, other: u16)

Performs the *= operation.

impl MulAssign<u32> for U256

fn mul_assign(&mut self, other: u32)

Performs the *= operation.

impl MulAssign<u64> for U256

fn mul_assign(&mut self, other: u64)

Performs the *= operation.

impl MulAssign<u8> for U256

fn mul_assign(&mut self, other: u8)

Performs the *= operation.

impl MulAssign<usize> for U256

fn mul_assign(&mut self, other: usize)

Performs the *= operation.

impl MulAssign for U256

fn mul_assign(&mut self, other: U256)

Performs the *= operation.

impl Not for U256

type Output = U256

The resulting type after applying the ! operator.

fn not(self) -> U256

Performs the unary ! operation.

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<'a, T> Rem<T> for &'a U256

where T: Into<U256> + Copy,

type Output = U256

The resulting type after applying the % operator.

fn rem(self, other: T) -> U256

Performs the % operation.

impl<T> Rem<T> for U256

where T: Into<U256> + Copy,

type Output = U256

The resulting type after applying the % operator.

fn rem(self, other: T) -> U256

Performs the % operation.

impl<T> RemAssign<T> for U256

where T: Into<U256> + Copy,

fn rem_assign(&mut self, other: T)

Performs the %= operation.

impl<'a, T> Shl<T> for &'a U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the << operator.

fn shl(self, shift: T) -> U256

Performs the << operation.

impl<T> Shl<T> for U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the << operator.

fn shl(self, shift: T) -> U256

Performs the << operation.

impl<T> ShlAssign<T> for U256

where T: Into<U256>,

fn shl_assign(&mut self, shift: T)

Performs the <<= operation.

impl<'a, T> Shr<T> for &'a U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the >> operator.

fn shr(self, shift: T) -> U256

Performs the >> operation.

impl<T> Shr<T> for U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the >> operator.

fn shr(self, shift: T) -> U256

Performs the >> operation.

impl<T> ShrAssign<T> for U256

where T: Into<U256>,

fn shr_assign(&mut self, shift: T)

Performs the >>= operation.

impl<'a, T> Sub<T> for &'a U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the - operator.

fn sub(self, other: T) -> U256

Performs the - operation.

impl<T> Sub<T> for U256

where T: Into<U256>,

type Output = U256

The resulting type after applying the - operator.

fn sub(self, other: T) -> U256

Performs the - operation.

impl SubAssign for U256

fn sub_assign(&mut self, other: U256)

Performs the -= operation.

impl TryFrom<U256> for i128

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<i128, &'static str>

Performs the conversion.

impl TryFrom<U256> for i16

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<i16, &'static str>

Performs the conversion.

impl TryFrom<U256> for i32

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<i32, &'static str>

Performs the conversion.

impl TryFrom<U256> for i64

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<i64, &'static str>

Performs the conversion.

impl TryFrom<U256> for i8

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<i8, &'static str>

Performs the conversion.

impl TryFrom<U256> for isize

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<isize, &'static str>

Performs the conversion.

impl TryFrom<U256> for u128

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<u128, &'static str>

Performs the conversion.

impl TryFrom<U256> for u16

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<u16, &'static str>

Performs the conversion.

impl TryFrom<U256> for u32

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<u32, &'static str>

Performs the conversion.

impl TryFrom<U256> for u64

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<u64, &'static str>

Performs the conversion.

impl TryFrom<U256> for u8

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<u8, &'static str>

Performs the conversion.

impl TryFrom<U256> for usize

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(u: U256) -> Result<usize, &'static str>

Performs the conversion.

impl UpperHex for U256

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

Formats the value using the given formatter.

impl Copy for U256

impl Eq for U256

impl StructuralPartialEq for U256

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes