Struct etcommon_bigint::U128

#[repr(C)]
pub struct U128(pub [u64; 2]);

Little-endian large integer type

Methods

impl U128

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

Convert from a decimal string.

fn low_u32(&self) -> u32

Conversion to u32

fn low_u64(&self) -> u64

Conversion to u64

fn as_u32(&self) -> u32

Conversion to u32 with overflow checking

Panics

Panics if the number is larger than 2^32.

fn as_u64(&self) -> u64

Conversion to u64 with overflow checking

Panics

Panics if the number is larger than 2^64.

fn as_usize(&self) -> usize

Conversion to usize with overflow checking

Panics

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

fn is_zero(&self) -> bool

Whether this is zero.

fn bits(&self) -> usize

Return the least number of bits needed to represent the number

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

Return if specific bit is set.

Panics

Panics if index exceeds the bit width of the number.

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

Return specific byte. This is in the big endian format.

Panics

Panics if index exceeds the byte width of the number.

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

Write to the slice in big-endian format.

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

Write to the slice in little-endian format.

fn exp10(n: usize) -> Self

Create 10**n as this type.

Panics

Panics if the result overflows the type.

fn zero() -> Self

Zero (additive identity) of this type.

fn one() -> Self

One (multiplicative identity) of this type.

fn max_value() -> Self

The maximum value which can be inhabited by this type.

fn min_value() -> Self

The minimum value which can be inhabited by this type.

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.

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

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

fn overflowing_add(self, other: U128) -> (U128, bool)

Optimized instructions

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

Addition which saturates at the maximum value.

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

Subtraction which underflows and returns a flag if it does.

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

Subtraction which saturates at zero.

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

Multiply with overflow, returning a flag if it does.

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

Multiplication which saturates at the maximum value..

fn overflowing_div(self, other: U128) -> (U128, bool)

Division with overflow

fn overflowing_rem(self, other: U128) -> (U128, bool)

Modulus with overflow.

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

Negation with overflow.

Trait Implementations

impl Encodable for U128

fn rlp_append(&self, s: &mut RlpStream)

Append a value to the stream

fn rlp_bytes(&self) -> ElasticArray1024<u8>

Get rlp-encoded bytes for this instance

impl Decodable for U128

fn decode(rlp: &UntrustedRlp) -> Result<Self, DecoderError>

Decode a value from RLP bytes

impl Copy for U128

impl Clone for U128

fn clone(&self) -> U128

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Eq for U128

impl PartialEq for U128

fn eq(&self, __arg_0: &U128) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &U128) -> bool

This method tests for !=.

impl Hash for U128

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

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

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

impl Default for U128

fn default() -> Self

Returns the "default value" for a type.

impl From<u64> for U128

fn from(value: u64) -> U128

Performs the conversion.

impl From<u8> for U128

fn from(value: u8) -> U128

Performs the conversion.

impl From<u16> for U128

fn from(value: u16) -> U128

Performs the conversion.

impl From<u32> for U128

fn from(value: u32) -> U128

Performs the conversion.

impl From<usize> for U128

fn from(value: usize) -> U128

Performs the conversion.

impl From<i64> for U128

fn from(value: i64) -> U128

Performs the conversion.

impl From<i8> for U128

fn from(value: i8) -> U128

Performs the conversion.

impl From<i16> for U128

fn from(value: i16) -> U128

Performs the conversion.

impl From<i32> for U128

fn from(value: i32) -> U128

Performs the conversion.

impl From<isize> for U128

fn from(value: isize) -> U128

Performs the conversion.

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

fn from(bytes: &[u8]) -> U128

Performs the conversion.

impl FromStr for U128

type Err = ParseHexError

The associated error which can be returned from parsing.

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

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

impl Add<U128> for U128

type Output = U128

The resulting type after applying the + operator

fn add(self, other: U128) -> U128

The method for the + operator

impl Sub<U128> for U128

type Output = U128

The resulting type after applying the - operator

fn sub(self, other: U128) -> U128

The method for the - operator

impl Mul<U128> for U128

type Output = U128

The resulting type after applying the * operator

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

The method for the * operator

impl Div<U128> for U128

type Output = U128

The resulting type after applying the / operator

fn div(self, other: U128) -> U128

The method for the / operator

impl Rem<U128> for U128

type Output = U128

The resulting type after applying the % operator

fn rem(self, other: U128) -> U128

The method for the % operator

impl BitAnd<U128> for U128

type Output = U128

The resulting type after applying the & operator

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

The method for the & operator

impl BitXor<U128> for U128

type Output = U128

The resulting type after applying the ^ operator

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

The method for the ^ operator

impl BitOr<U128> for U128

type Output = U128

The resulting type after applying the | operator

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

The method for the | operator

impl Not for U128

type Output = U128

The resulting type after applying the ! operator

fn not(self) -> U128

The method for the unary ! operator

impl Shl<usize> for U128

type Output = U128

The resulting type after applying the << operator

fn shl(self, shift: usize) -> U128

The method for the << operator

impl Shr<usize> for U128

type Output = U128

The resulting type after applying the >> operator

fn shr(self, shift: usize) -> U128

The method for the >> operator

impl Ord for U128

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

This method returns an Ordering between self and other.

impl PartialOrd for U128

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

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

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

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

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

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

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

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

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

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

impl Debug for U128

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

Formats the value using the given formatter.

impl Display for U128

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

Formats the value using the given formatter.

impl LowerHex for U128

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

Formats the value using the given formatter.

impl UpperHex for U128

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

Formats the value using the given formatter.

impl From<&'static str> for U128

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

Performs the conversion.

impl From<U256> for U128

fn from(value: U256) -> U128

Performs the conversion.

impl From<U512> for U128

fn from(value: U512) -> U128

Performs the conversion.

impl HeapSizeOf for U128

fn heap_size_of_children(&self) -> usize

Measure the size of any heap-allocated structures that hang off this value, but not the space taken up by the value itself (i.e. what size_of:: measures, more or less); that space is handled by the implementation of HeapSizeOf for Box below.