# [−]Struct types_primitive::U128

Little-endian large integer type 128-bit unsigned integer.

## Methods

`impl U128`

`pub const `**MAX**: U128

**MAX**: U128

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`

`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`

`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`

`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`

`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: U128) -> (U128, bool)`

Add with overflow.

`pub fn saturating_add(self, other: U128) -> U128`

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

`pub fn checked_add(self, other: U128) -> Option<U128>`

Checked addition. Returns `None`

if overflow occurred.

`pub fn overflowing_sub(self, other: U128) -> (U128, bool)`

Subtraction which underflows and returns a flag if it does.

`pub fn saturating_sub(self, other: U128) -> U128`

Subtraction which saturates at zero.

`pub fn checked_sub(self, other: U128) -> Option<U128>`

Checked subtraction. Returns `None`

if overflow occurred.

`pub fn overflowing_mul(self, other: U128) -> (U128, bool)`

Multiply with overflow, returning a flag if it does.

`pub fn saturating_mul(self, other: U128) -> U128`

Multiplication which saturates at the maximum value..

`pub fn checked_mul(self, other: U128) -> Option<U128>`

Checked multiplication. Returns `None`

if overflow occurred.

`pub fn checked_div(self, other: U128) -> Option<U128>`

Checked division. Returns `None`

if `other == 0`

.

`pub fn checked_rem(self, other: U128) -> Option<U128>`

Checked modulus. Returns `None`

if `other == 0`

.

`pub fn overflowing_neg(self) -> (U128, bool)`

Negation with overflow.

`pub fn checked_neg(self) -> Option<U128>`

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 U128`

## Trait Implementations

`impl Copy for U128`

`impl PartialEq<U128> for U128`

`impl AsRef<U128> for U128`

`impl Default for U128`

`fn default() -> Self`

`impl Clone for U128`

`fn clone(&self) -> U128`

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

1.0.0[src]

Performs copy-assignment from `source`

. Read more

`impl Ord for U128`

`fn cmp(&self, other: &U128) -> Ordering`

`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]

`clamp`

)Restrict a value to a certain interval. Read more

`impl<'a> From<&'a U128> for U128`

`impl From<U128> for [u8; 16]`

`impl From<[u8; 16]> for U128`

`impl<'a> From<&'a [u8; 16]> for U128`

`impl From<u64> for U128`

`impl From<u8> for U128`

`impl From<u16> for U128`

`impl From<u32> for U128`

`impl From<usize> for U128`

`impl From<i64> for U128`

`impl From<i8> for U128`

`impl From<i16> for U128`

`impl From<i32> for U128`

`impl From<isize> for U128`

`impl<'a> From<&'a [u8]> for U128`

`impl From<&'static str> for U128`

`impl From<u128> for U128`

`impl From<i128> for U128`

`impl Eq for U128`

`impl PartialOrd<U128> for U128`

`fn partial_cmp(&self, other: &U128) -> Option<Ordering>`

```
#[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 U128`

`impl Debug for U128`

`impl<T> Sub<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<'a, T> Sub<T> for &'a U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<T> Div<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<'a, T> Div<T> for &'a U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<T> Add<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<'a, T> Add<T> for &'a U128 where`

T: Into<U128>,

T: Into<U128>,

`impl Mul<u32> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: u32) -> U128`

`impl<'a> Mul<u32> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: u32) -> U128`

`impl Mul<u8> for U128`

`impl<'a> Mul<&'a u8> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a u8) -> U128`

`impl<'a> Mul<&'a u8> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a u8) -> U128`

`impl<'a> Mul<u8> for &'a U128`

`impl Mul<u16> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: u16) -> U128`

`impl<'a> Mul<&'a u16> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a u16) -> U128`

`impl<'a> Mul<&'a u16> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a u16) -> U128`

`impl<'a> Mul<u16> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: u16) -> U128`

`impl Mul<u64> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: u64) -> U128`

`impl<'a> Mul<&'a u64> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a u64) -> U128`

`impl<'a> Mul<&'a u64> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a u64) -> U128`

`impl<'a> Mul<u64> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: u64) -> U128`

`impl Mul<usize> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: usize) -> U128`

`impl<'a> Mul<&'a usize> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a usize) -> U128`

`impl<'a> Mul<&'a usize> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a usize) -> U128`

`impl<'a> Mul<usize> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: usize) -> U128`

`impl Mul<i8> for U128`

`impl<'a> Mul<&'a i8> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a i8) -> U128`

`impl<'a> Mul<&'a i8> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a i8) -> U128`

`impl<'a> Mul<i8> for &'a U128`

`impl Mul<i16> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: i16) -> U128`

`impl<'a> Mul<&'a i16> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a i16) -> U128`

`impl<'a> Mul<&'a i16> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a i16) -> U128`

`impl<'a> Mul<i16> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: i16) -> U128`

`impl Mul<i64> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: i64) -> U128`

`impl<'a> Mul<&'a i64> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a i64) -> U128`

`impl<'a> Mul<&'a i64> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a i64) -> U128`

`impl<'a> Mul<i64> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: i64) -> U128`

`impl Mul<isize> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: isize) -> U128`

`impl<'a> Mul<&'a isize> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a isize) -> U128`

`impl<'a> Mul<&'a isize> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a isize) -> U128`

`impl<'a> Mul<isize> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: isize) -> U128`

`impl Mul<U128> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: U128) -> U128`

`impl<'a> Mul<&'a U128> for U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a U128) -> U128`

`impl<'a> Mul<&'a U128> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: &'a U128) -> U128`

`impl<'a> Mul<U128> for &'a U128`

`type Output = U128`

The resulting type after applying the `*`

operator.

`fn mul(self, other: U128) -> U128`

`impl<T> Rem<T> for U128 where`

T: Into<U128> + Copy,

T: Into<U128> + Copy,

`impl<'a, T> Rem<T> for &'a U128 where`

T: Into<U128> + Copy,

T: Into<U128> + Copy,

`impl AddAssign<U128> for U128`

`fn add_assign(&mut self, other: U128)`

`impl SubAssign<U128> for U128`

`fn sub_assign(&mut self, other: U128)`

`impl MulAssign<u32> for U128`

`fn mul_assign(&mut self, other: u32)`

`impl MulAssign<u8> for U128`

`fn mul_assign(&mut self, other: u8)`

`impl MulAssign<u16> for U128`

`fn mul_assign(&mut self, other: u16)`

`impl MulAssign<u64> for U128`

`fn mul_assign(&mut self, other: u64)`

`impl MulAssign<usize> for U128`

`fn mul_assign(&mut self, other: usize)`

`impl MulAssign<i8> for U128`

`fn mul_assign(&mut self, other: i8)`

`impl MulAssign<i16> for U128`

`fn mul_assign(&mut self, other: i16)`

`impl MulAssign<i64> for U128`

`fn mul_assign(&mut self, other: i64)`

`impl MulAssign<isize> for U128`

`fn mul_assign(&mut self, other: isize)`

`impl MulAssign<U128> for U128`

`fn mul_assign(&mut self, other: U128)`

`impl<T> DivAssign<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`fn div_assign(&mut self, other: T)`

`impl<T> RemAssign<T> for U128 where`

T: Into<U128> + Copy,

T: Into<U128> + Copy,

`fn rem_assign(&mut self, other: T)`

`impl Not for U128`

`impl BitAnd<U128> for U128`

`type Output = U128`

The resulting type after applying the `&`

operator.

`fn bitand(self, other: U128) -> U128`

`impl BitOr<U128> for U128`

`type Output = U128`

The resulting type after applying the `|`

operator.

`fn bitor(self, other: U128) -> U128`

`impl BitXor<U128> for U128`

`type Output = U128`

The resulting type after applying the `^`

operator.

`fn bitxor(self, other: U128) -> U128`

`impl<T> Shl<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<'a, T> Shl<T> for &'a U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<T> Shr<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<'a, T> Shr<T> for &'a U128 where`

T: Into<U128>,

T: Into<U128>,

`impl<T> ShlAssign<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`fn shl_assign(&mut self, shift: T)`

`impl<T> ShrAssign<T> for U128 where`

T: Into<U128>,

T: Into<U128>,

`fn shr_assign(&mut self, shift: T)`

`impl Hash for U128`

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

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

H: Hasher,

1.3.0[src]

H: Hasher,

Feeds a slice of this type into the given [`Hasher`

]. Read more

`impl FromStr for U128`

`type Err = FromHexError`

The associated error which can be returned from parsing.

`fn from_str(value: &str) -> Result<U128, Self::Err>`

`impl LowerHex for U128`

`impl Encode for U128`

`fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R`

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

T: Output,

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 U128`

## Auto Trait Implementations

## Blanket Implementations

`impl<T> ToOwned for T where`

T: Clone,

[src]

T: Clone,

`type Owned = T`

The resulting type after obtaining ownership.

`fn to_owned(&self) -> T`

[src]

`fn clone_into(&self, target: &mut T)`

[src]

`impl<T> ToString for T where`

T: Display + ?Sized,

[src]

T: Display + ?Sized,

`impl<T> From for T`

[src]

`impl<T, U> Into for T where`

U: From<T>,

[src]

U: From<T>,

`impl<T, U> TryFrom for T where`

U: Into<T>,

[src]

U: Into<T>,

`type Error = Infallible`

The type returned in the event of a conversion error.

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`

[src]

`impl<T, U> TryInto for T where`

U: TryFrom<T>,

[src]

U: TryFrom<T>,

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

The type returned in the event of a conversion error.

`fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`

[src]

`impl<T> Borrow for T where`

T: ?Sized,

[src]

T: ?Sized,

`impl<T> BorrowMut for T where`

T: ?Sized,

[src]

T: ?Sized,

`fn borrow_mut(&mut self) -> &mut T`

[src]

`impl<T> Any for T where`

T: 'static + ?Sized,

[src]

T: 'static + ?Sized,

`impl<S> Codec for S where`

S: Encode + Decode,

S: Encode + Decode,

`impl<T> KeyedVec for T where`

T: Codec,

T: Codec,