Struct primitive_types::U256
source · #[repr(C)]pub struct U256(pub [u64; 4]);
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<Self, FromStrRadixErr>
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.
sourcepub fn from_dec_str(value: &str) -> Result<Self, FromDecStrErr>
pub fn from_dec_str(value: &str) -> Result<Self, 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 div_mod(self, other: Self) -> (Self, Self)
pub fn div_mod(self, other: Self) -> (Self, Self)
sourcepub fn integer_sqrt(&self) -> Self
pub fn integer_sqrt(&self) -> Self
Compute the highest n
such that n * n <= self
.
sourcepub fn pow(self, expon: Self) -> 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.
sourcepub fn overflowing_pow(self, expon: Self) -> (Self, bool)
pub fn overflowing_pow(self, expon: Self) -> (Self, 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]) -> Self
pub fn from_big_endian(slice: &[u8]) -> Self
Converts from big endian representation bytes in memory.
sourcepub fn from_little_endian(slice: &[u8]) -> Self
pub fn from_little_endian(slice: &[u8]) -> Self
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 Decode for U256
impl Decode for U256
source§impl<'de> Deserialize<'de> for U256
impl<'de> Deserialize<'de> for U256
source§fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
fn deserialize<D>(deserializer: D) -> Result<Self, D::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 Encode for U256
impl Encode for U256
source§fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R
fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
source§fn encode_to<T>(&self, dest: &mut T)where
T: Output + ?Sized,
fn encode_to<T>(&self, dest: &mut T)where T: Output + ?Sized,
source§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
source§impl MaxEncodedLen for U256
impl MaxEncodedLen for U256
source§fn max_encoded_len() -> usize
fn max_encoded_len() -> usize
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 PartialEq<U256> for U256
impl PartialEq<U256> 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<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 moreimpl Copy for U256
impl EncodeLike<U256> for U256
impl Eq for U256
impl StructuralEq for U256
impl StructuralPartialEq for U256
Auto Trait Implementations§
impl RefUnwindSafe for U256
impl Send for U256
impl Sync for U256
impl Unpin for U256
impl UnwindSafe for U256
Blanket Implementations§
source§impl<A, T> AsBits<T> for Awhere
A: AsRef<[T]>,
T: BitStore,
impl<A, T> AsBits<T> for Awhere A: AsRef<[T]>, T: BitStore,
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T: ToByteSlice,
U: AsRef<[T]> + ?Sized,
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fn as_byte_slice(&self) -> &[u8] ⓘ
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
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T: Decode,
impl<T> DecodeLimit for Twhere T: Decode,
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impl<T> FmtForward for T
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T: ?Sized,
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