Struct Alignment 

pub struct Alignment(/* private fields */);

A type storing a usize which is a power of two, and thus represents a possible alignment in the rust abstract machine.

Note that particularly large alignments, while representable in this type, are likely not to be supported by actual allocators and linkers.

Implementations

impl Alignment

pub const MIN: Self

Minimum alignment value

pub const fn of<T>() -> Self

Returns the alignment for a type.

This provides the same numerical value as mem::align_of, but in an Alignment instead of a usize.

pub const fn new(align: usize) -> Option<Self>

Creates an Alignment from a usize, or returns None if it’s not a power of two.

Note that 0 is not a power of two, nor a valid alignment.

pub const unsafe fn new_unchecked(align: usize) -> Self

Creates an Alignment from a power-of-two usize.

Safety

align must be a power of two.

Equivalently, it must be 1 << exp for some exp in 0..usize::BITS. It must not be zero.

pub const fn as_usize(self) -> usize

Returns the alignment as a usize

pub const fn as_nonzero(self) -> NonZeroUsize

Returns the alignment as a NonZeroUsize

pub fn log2(self) -> u32

log2

Trait Implementations

impl Clone for Alignment

fn clone(&self) -> Alignment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Alignment

impl Debug for Alignment

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

Formats the value using the given formatter.

impl Eq for Alignment

impl From<Alignment> for NonZeroUsize

fn from(align: Alignment) -> NonZeroUsize

Converts to this type from the input type.

impl From<Alignment> for usize

fn from(align: Alignment) -> usize

Converts to this type from the input type.

impl GetStaticEquivalent_ for Alignment

type StaticEquivalent = _static_Alignment

The 'static equivalent of Self

impl Hash for Alignment

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Alignment

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Alignment

fn eq(&self, other: &Alignment) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Alignment

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl StableAbi for Alignment

const LAYOUT: &'static TypeLayout

The layout of the type provided by implementors.

type IsNonZeroType = False

Whether this type has a single invalid bit-pattern.

const ABI_CONSTS: AbiConsts = _

const-equivalents of the associated types.

impl StructuralPartialEq for Alignment

impl TryFrom<NonZero<usize>> for Alignment

type Error = ()

The type returned in the event of a conversion error.

fn try_from(align: NonZeroUsize) -> Result<Alignment, Self::Error>

Performs the conversion.

impl TryFrom<usize> for Alignment

type Error = ()

The type returned in the event of a conversion error.

fn try_from(align: usize) -> Result<Alignment, Self::Error>

Performs the conversion.