Struct ethereum_types::U256
source · Expand description
Little-endian large integer type 256-bit unsigned integer.
Tuple Fields§
§0: [u64; 4]
Implementations§
source§impl U256
impl U256
sourcepub fn from_str_radix(txt: &str, radix: u32) -> Result<U256, FromStrRadixErr>
pub fn from_str_radix(txt: &str, radix: u32) -> Result<U256, FromStrRadixErr>
Converts a string slice in a given base to an integer. Only supports radixes of 10 and 16.
sourcepub fn from_dec_str(value: &str) -> Result<U256, FromDecStrErr>
pub fn from_dec_str(value: &str) -> Result<U256, FromDecStrErr>
Convert from a decimal string.
sourcepub fn as_u64(&self) -> u64
pub fn as_u64(&self) -> u64
Conversion to u64 with overflow checking
Panics
Panics if the number is larger than u64::max_value().
sourcepub fn as_usize(&self) -> usize
pub fn as_usize(&self) -> usize
Conversion to usize with overflow checking
Panics
Panics if the number is larger than usize::max_value().
sourcepub fn leading_zeros(&self) -> u32
pub fn leading_zeros(&self) -> u32
Returns the number of leading zeros in the binary representation of self.
sourcepub fn trailing_zeros(&self) -> u32
pub fn trailing_zeros(&self) -> u32
Returns the number of trailing zeros in the binary representation of self.
sourcepub fn to_big_endian(&self, bytes: &mut [u8])
pub fn to_big_endian(&self, bytes: &mut [u8])
Write to the slice in big-endian format.
sourcepub fn to_little_endian(&self, bytes: &mut [u8])
pub fn to_little_endian(&self, bytes: &mut [u8])
Write to the slice in little-endian format.
sourcepub fn integer_sqrt(&self) -> U256
pub fn integer_sqrt(&self) -> U256
Compute the highest n
such that n * n <= self
.
sourcepub fn pow(self, expon: U256) -> U256
pub fn pow(self, expon: U256) -> U256
Fast exponentiation by squaring https://en.wikipedia.org/wiki/Exponentiation_by_squaring
Panics
Panics if the result overflows the type.
sourcepub fn overflowing_pow(self, expon: U256) -> (U256, bool)
pub fn overflowing_pow(self, expon: U256) -> (U256, bool)
Fast exponentiation by squaring. Returns result and overflow flag.
sourcepub fn checked_pow(self, expon: U256) -> Option<U256>
pub fn checked_pow(self, expon: U256) -> Option<U256>
Checked exponentiation. Returns None
if overflow occurred.
sourcepub fn overflowing_add(self, other: U256) -> (U256, bool)
pub fn overflowing_add(self, other: U256) -> (U256, bool)
Addition which overflows and returns a flag if it does.
sourcepub fn saturating_add(self, other: U256) -> U256
pub fn saturating_add(self, other: U256) -> U256
Addition which saturates at the maximum value (Self::MAX).
sourcepub fn checked_add(self, other: U256) -> Option<U256>
pub fn checked_add(self, other: U256) -> Option<U256>
Checked addition. Returns None
if overflow occurred.
sourcepub fn overflowing_sub(self, other: U256) -> (U256, bool)
pub fn overflowing_sub(self, other: U256) -> (U256, bool)
Subtraction which underflows and returns a flag if it does.
sourcepub fn saturating_sub(self, other: U256) -> U256
pub fn saturating_sub(self, other: U256) -> U256
Subtraction which saturates at zero.
sourcepub fn checked_sub(self, other: U256) -> Option<U256>
pub fn checked_sub(self, other: U256) -> Option<U256>
Checked subtraction. Returns None
if overflow occurred.
sourcepub fn abs_diff(self, other: U256) -> U256
pub fn abs_diff(self, other: U256) -> U256
Computes the absolute difference between self and other.
sourcepub fn overflowing_mul(self, other: U256) -> (U256, bool)
pub fn overflowing_mul(self, other: U256) -> (U256, bool)
Multiply with overflow, returning a flag if it does.
sourcepub fn saturating_mul(self, other: U256) -> U256
pub fn saturating_mul(self, other: U256) -> U256
Multiplication which saturates at the maximum value..
sourcepub fn checked_mul(self, other: U256) -> Option<U256>
pub fn checked_mul(self, other: U256) -> Option<U256>
Checked multiplication. Returns None
if overflow occurred.
sourcepub fn checked_div(self, other: U256) -> Option<U256>
pub fn checked_div(self, other: U256) -> Option<U256>
Checked division. Returns None
if other == 0
.
sourcepub fn checked_rem(self, other: U256) -> Option<U256>
pub fn checked_rem(self, other: U256) -> Option<U256>
Checked modulus. Returns None
if other == 0
.
sourcepub fn overflowing_neg(self) -> (U256, bool)
pub fn overflowing_neg(self) -> (U256, bool)
Negation with overflow.
sourcepub fn checked_neg(self) -> Option<U256>
pub fn checked_neg(self) -> Option<U256>
Checked negation. Returns None
unless self == 0
.
sourcepub fn from_big_endian(slice: &[u8]) -> U256
pub fn from_big_endian(slice: &[u8]) -> U256
Converts from big endian representation bytes in memory.
sourcepub fn from_little_endian(slice: &[u8]) -> U256
pub fn from_little_endian(slice: &[u8]) -> U256
Converts from little endian representation bytes in memory.
Trait Implementations§
source§impl AddAssign<U256> for U256
impl AddAssign<U256> for U256
source§fn add_assign(&mut self, other: U256)
fn add_assign(&mut self, other: U256)
+=
operation. Read moresource§impl BitAndAssign<U256> for U256
impl BitAndAssign<U256> for U256
source§fn bitand_assign(&mut self, rhs: U256)
fn bitand_assign(&mut self, rhs: U256)
&=
operation. Read moresource§impl BitOrAssign<U256> for U256
impl BitOrAssign<U256> for U256
source§fn bitor_assign(&mut self, rhs: U256)
fn bitor_assign(&mut self, rhs: U256)
|=
operation. Read moresource§impl BitXorAssign<U256> for U256
impl BitXorAssign<U256> for U256
source§fn bitxor_assign(&mut self, rhs: U256)
fn bitxor_assign(&mut self, rhs: U256)
^=
operation. Read moresource§impl<'de> Deserialize<'de> for U256
impl<'de> Deserialize<'de> for U256
source§fn deserialize<D>(
deserializer: D
) -> Result<U256, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
fn deserialize<D>(
deserializer: D
) -> Result<U256, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
source§impl<T> DivAssign<T> for U256where
T: Into<U256>,
impl<T> DivAssign<T> for U256where
T: Into<U256>,
source§fn div_assign(&mut self, other: T)
fn div_assign(&mut self, other: T)
/=
operation. Read moresource§impl Encodable for U256
impl Encodable for U256
source§fn rlp_append(&self, s: &mut RlpStream)
fn rlp_append(&self, s: &mut RlpStream)
source§impl MulAssign<U256> for U256
impl MulAssign<U256> for U256
source§fn mul_assign(&mut self, other: U256)
fn mul_assign(&mut self, other: U256)
*=
operation. Read moresource§impl MulAssign<i16> for U256
impl MulAssign<i16> for U256
source§fn mul_assign(&mut self, other: i16)
fn mul_assign(&mut self, other: i16)
*=
operation. Read moresource§impl MulAssign<i32> for U256
impl MulAssign<i32> for U256
source§fn mul_assign(&mut self, other: i32)
fn mul_assign(&mut self, other: i32)
*=
operation. Read moresource§impl MulAssign<i64> for U256
impl MulAssign<i64> for U256
source§fn mul_assign(&mut self, other: i64)
fn mul_assign(&mut self, other: i64)
*=
operation. Read moresource§impl MulAssign<i8> for U256
impl MulAssign<i8> for U256
source§fn mul_assign(&mut self, other: i8)
fn mul_assign(&mut self, other: i8)
*=
operation. Read moresource§impl MulAssign<isize> for U256
impl MulAssign<isize> for U256
source§fn mul_assign(&mut self, other: isize)
fn mul_assign(&mut self, other: isize)
*=
operation. Read moresource§impl MulAssign<u16> for U256
impl MulAssign<u16> for U256
source§fn mul_assign(&mut self, other: u16)
fn mul_assign(&mut self, other: u16)
*=
operation. Read moresource§impl MulAssign<u32> for U256
impl MulAssign<u32> for U256
source§fn mul_assign(&mut self, other: u32)
fn mul_assign(&mut self, other: u32)
*=
operation. Read moresource§impl MulAssign<u64> for U256
impl MulAssign<u64> for U256
source§fn mul_assign(&mut self, other: u64)
fn mul_assign(&mut self, other: u64)
*=
operation. Read moresource§impl MulAssign<u8> for U256
impl MulAssign<u8> for U256
source§fn mul_assign(&mut self, other: u8)
fn mul_assign(&mut self, other: u8)
*=
operation. Read moresource§impl MulAssign<usize> for U256
impl MulAssign<usize> for U256
source§fn mul_assign(&mut self, other: usize)
fn mul_assign(&mut self, other: usize)
*=
operation. Read moresource§impl Ord for U256
impl Ord for U256
source§impl PartialOrd<U256> for U256
impl PartialOrd<U256> for U256
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl<T> RemAssign<T> for U256where
T: Into<U256> + Copy,
impl<T> RemAssign<T> for U256where
T: Into<U256> + Copy,
source§fn rem_assign(&mut self, other: T)
fn rem_assign(&mut self, other: T)
%=
operation. Read moresource§impl Serialize for U256
impl Serialize for U256
source§fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>where
S: Serializer,
fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>where
S: Serializer,
source§impl<T> ShlAssign<T> for U256where
T: Into<U256>,
impl<T> ShlAssign<T> for U256where
T: Into<U256>,
source§fn shl_assign(&mut self, shift: T)
fn shl_assign(&mut self, shift: T)
<<=
operation. Read moresource§impl<T> ShrAssign<T> for U256where
T: Into<U256>,
impl<T> ShrAssign<T> for U256where
T: Into<U256>,
source§fn shr_assign(&mut self, shift: T)
fn shr_assign(&mut self, shift: T)
>>=
operation. Read moresource§impl SubAssign<U256> for U256
impl SubAssign<U256> for U256
source§fn sub_assign(&mut self, other: U256)
fn sub_assign(&mut self, other: U256)
-=
operation. Read more