Struct sp_std::num::NonZeroI81.34.0[][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>());

Implementations

impl NonZeroI8[src]

pub const unsafe fn new_unchecked(n: i8) -> NonZeroI81.34.0 (const: 1.34.0)[src]

Creates a non-zero without checking the value.

Safety

The value must not be zero.

pub const fn new(n: i8) -> Option<NonZeroI8>1.34.0 (const: 1.47.0)[src]

Creates a non-zero if the given value is not zero.

pub const fn get(self) -> i81.34.0 (const: 1.34.0)[src]

Returns the value as a primitive type.

impl NonZeroI8[src]

pub const fn leading_zeros(self) -> u32[src]

🔬 This is a nightly-only experimental API. (nonzero_leading_trailing_zeros)

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:

#![feature(nonzero_leading_trailing_zeros)]
let n = std::num::NonZeroI8::new(-1i8).unwrap();

assert_eq!(n.leading_zeros(), 0);

pub const fn trailing_zeros(self) -> u32[src]

🔬 This is a nightly-only experimental API. (nonzero_leading_trailing_zeros)

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:

#![feature(nonzero_leading_trailing_zeros)]
let n = std::num::NonZeroI8::new(0b0101000).unwrap();

assert_eq!(n.trailing_zeros(), 3);

Trait Implementations

impl Binary for NonZeroI8[src]

impl BitOr<NonZeroI8> for i81.45.0[src]

type Output = NonZeroI8

The resulting type after applying the | operator.

impl BitOr<NonZeroI8> for NonZeroI81.45.0[src]

type Output = NonZeroI8

The resulting type after applying the | operator.

impl BitOr<i8> for NonZeroI81.45.0[src]

type Output = NonZeroI8

The resulting type after applying the | operator.

impl BitOrAssign<NonZeroI8> for NonZeroI81.45.0[src]

impl BitOrAssign<i8> for NonZeroI81.45.0[src]

impl Clone for NonZeroI8[src]

impl Copy for NonZeroI8[src]

impl Debug for NonZeroI8[src]

impl Display for NonZeroI8[src]

impl Eq for NonZeroI8[src]

impl From<NonZeroI8> for NonZeroI321.41.0[src]

Converts NonZeroI8 to NonZeroI32 losslessly.

impl From<NonZeroI8> for NonZeroI161.41.0[src]

Converts NonZeroI8 to NonZeroI16 losslessly.

impl From<NonZeroI8> for i81.31.0[src]

pub fn from(nonzero: NonZeroI8) -> i8[src]

Converts a NonZeroI8 into an i8

impl From<NonZeroI8> for NonZeroIsize1.41.0[src]

Converts NonZeroI8 to NonZeroIsize losslessly.

impl From<NonZeroI8> for NonZeroI1281.41.0[src]

Converts NonZeroI8 to NonZeroI128 losslessly.

impl From<NonZeroI8> for NonZeroI641.41.0[src]

Converts NonZeroI8 to NonZeroI64 losslessly.

impl FromStr for NonZeroI81.35.0[src]

type Err = ParseIntError

The associated error which can be returned from parsing.

impl Hash for NonZeroI8[src]

impl LowerHex for NonZeroI8[src]

impl Octal for NonZeroI8[src]

impl Ord for NonZeroI8[src]

impl PartialEq<NonZeroI8> for NonZeroI8[src]

impl PartialOrd<NonZeroI8> for NonZeroI8[src]

impl StructuralEq for NonZeroI8[src]

impl StructuralPartialEq for NonZeroI8[src]

impl TryFrom<NonZeroI128> for NonZeroI81.49.0[src]

Attempts to convert NonZeroI128 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI16> for NonZeroI81.49.0[src]

Attempts to convert NonZeroI16 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI32> for NonZeroI81.49.0[src]

Attempts to convert NonZeroI32 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI64> for NonZeroI81.49.0[src]

Attempts to convert NonZeroI64 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI8> for NonZeroUsize1.49.0[src]

Attempts to convert NonZeroI8 to NonZeroUsize.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI8> for NonZeroU641.49.0[src]

Attempts to convert NonZeroI8 to NonZeroU64.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI8> for NonZeroU81.49.0[src]

Attempts to convert NonZeroI8 to NonZeroU8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI8> for NonZeroU161.49.0[src]

Attempts to convert NonZeroI8 to NonZeroU16.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI8> for NonZeroU1281.49.0[src]

Attempts to convert NonZeroI8 to NonZeroU128.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroI8> for NonZeroU321.49.0[src]

Attempts to convert NonZeroI8 to NonZeroU32.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroIsize> for NonZeroI81.49.0[src]

Attempts to convert NonZeroIsize to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroU128> for NonZeroI81.49.0[src]

Attempts to convert NonZeroU128 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroU16> for NonZeroI81.49.0[src]

Attempts to convert NonZeroU16 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroU32> for NonZeroI81.49.0[src]

Attempts to convert NonZeroU32 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroU64> for NonZeroI81.49.0[src]

Attempts to convert NonZeroU64 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroU8> for NonZeroI81.49.0[src]

Attempts to convert NonZeroU8 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<NonZeroUsize> for NonZeroI81.49.0[src]

Attempts to convert NonZeroUsize to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<i8> for NonZeroI81.46.0[src]

Attempts to convert i8 to NonZeroI8.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl UpperHex for NonZeroI8[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.