Struct core::num::NonZeroI8 1.34.0[−][src]
#[repr(transparent)]pub struct NonZeroI8(_);
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroI8>
is the same size as i8
:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroI8>>(), size_of::<i8>());Run
Implementations
impl NonZeroI8
[src]
impl NonZeroI8
[src]impl NonZeroI8
[src]
impl NonZeroI8
[src]pub const fn leading_zeros(self) -> u32
1.53.0 (const: 1.53.0)[src]
Returns the number of leading zeros in the binary representation of self
.
On many architectures, this function can perform better than leading_zeros()
on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroI8::new(-1i8).unwrap(); assert_eq!(n.leading_zeros(), 0);Run
pub const fn trailing_zeros(self) -> u32
1.53.0 (const: 1.53.0)[src]
Returns the number of trailing zeros in the binary representation
of self
.
On many architectures, this function can perform better than trailing_zeros()
on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroI8::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
Trait Implementations
impl BitOrAssign<NonZeroI8> for NonZeroI8
1.45.0[src]
impl BitOrAssign<NonZeroI8> for NonZeroI8
1.45.0[src]fn bitor_assign(&mut self, rhs: Self)
[src]
impl BitOrAssign<i8> for NonZeroI8
1.45.0[src]
impl BitOrAssign<i8> for NonZeroI8
1.45.0[src]fn bitor_assign(&mut self, rhs: i8)
[src]
impl Clone for NonZeroI8
[src]
impl Clone for NonZeroI8
[src]fn clone(&self) -> NonZeroI8
[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl From<NonZeroI8> for NonZeroI16
1.41.0[src]
impl From<NonZeroI8> for NonZeroI16
1.41.0[src]impl From<NonZeroI8> for NonZeroI32
1.41.0[src]
impl From<NonZeroI8> for NonZeroI32
1.41.0[src]impl From<NonZeroI8> for NonZeroI64
1.41.0[src]
impl From<NonZeroI8> for NonZeroI64
1.41.0[src]impl From<NonZeroI8> for NonZeroI128
1.41.0[src]
impl From<NonZeroI8> for NonZeroI128
1.41.0[src]impl From<NonZeroI8> for NonZeroIsize
1.41.0[src]
impl From<NonZeroI8> for NonZeroIsize
1.41.0[src]impl PartialOrd<NonZeroI8> for NonZeroI8
[src]
impl PartialOrd<NonZeroI8> for NonZeroI8
[src]impl TryFrom<NonZeroI128> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroI128> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroI128
to NonZeroI8
.
impl TryFrom<NonZeroI16> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroI16> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI16) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroI16
to NonZeroI8
.
impl TryFrom<NonZeroI32> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI32) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroI32
to NonZeroI8
.
impl TryFrom<NonZeroI64> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroI64> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI64) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroI64
to NonZeroI8
.
impl TryFrom<NonZeroI8> for NonZeroU16
1.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU16
1.49.0[src]impl TryFrom<NonZeroI8> for NonZeroU32
1.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU32
1.49.0[src]impl TryFrom<NonZeroI8> for NonZeroU64
1.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU64
1.49.0[src]impl TryFrom<NonZeroI8> for NonZeroU128
1.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU128
1.49.0[src]impl TryFrom<NonZeroI8> for NonZeroUsize
1.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroUsize
1.49.0[src]impl TryFrom<NonZeroIsize> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroIsize
to NonZeroI8
.
impl TryFrom<NonZeroU128> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroU128> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU128) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroU128
to NonZeroI8
.
impl TryFrom<NonZeroU16> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroU16> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU16) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroU16
to NonZeroI8
.
impl TryFrom<NonZeroU32> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU32) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroU32
to NonZeroI8
.
impl TryFrom<NonZeroU64> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroU64> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU64) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroU64
to NonZeroI8
.
impl TryFrom<NonZeroUsize> for NonZeroI8
1.49.0[src]
impl TryFrom<NonZeroUsize> for NonZeroI8
1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroUsize) -> Result<Self, Self::Error>
[src]
Attempts to convert NonZeroUsize
to NonZeroI8
.