Struct Caps 

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

CPU capabilities: a 256-bit feature bitset.

Use has() to check if required features are available. Caps is Copy, Send, and Sync.

Examples

use rscrypto::platform::Caps;

let caps = rscrypto::platform::caps();
assert!(caps.has(Caps::NONE));

Implementations

impl Caps

pub const NONE: Self

Empty capability set (no features).

pub const fn from_words(words: [u64; 4]) -> Self

Create a capability set from raw words.

This is primarily useful for serialization and testing.

pub const fn words(self) -> [u64; 4]

Return the raw underlying 64-bit words.

pub const fn has(self, required: Self) -> bool

Check if all features in required are present.

Examples

use rscrypto::platform::Caps;
let caps = rscrypto::platform::caps();
assert!(caps.has(Caps::NONE));

pub const fn union(self, other: Self) -> Self

Union of two capability sets.

pub const fn intersection(self, other: Self) -> Self

Intersection of two capability sets.

pub const fn difference(self, other: Self) -> Self

Set difference: returns bits in self that are not in other.

Equivalent to self & !other in bitwise terms.

pub const fn is_empty(self) -> bool

Check if the capability set is empty.

pub const fn count(self) -> u32

Count the number of features present.

pub const fn bit(bit: u8) -> Self

Create a capability set with a single bit set.

Bit must be 0-255 (enforced by type system via u8).

pub const fn has_bit(self, bit: u8) -> bool

Check if a specific bit is set.

impl Caps

pub fn feature_names(self) -> impl Iterator<Item = &'static str>

Returns an iterator over the names of all set feature bits.

Trait Implementations

impl BitAnd for Caps

type Output = Caps

The resulting type after applying the & operator.

fn bitand(self, rhs: Self) -> Self::Output

Performs the & operation.

impl BitOr for Caps

type Output = Caps

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self::Output

Performs the | operation.

impl BitOrAssign for Caps

fn bitor_assign(&mut self, rhs: Self)

Performs the |= operation.

impl Clone for Caps

fn clone(&self) -> Caps

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Caps

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

Formats the value using the given formatter.

impl Default for Caps

fn default() -> Caps

Returns the “default value” for a type.

impl Display for Caps

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

Formats the value using the given formatter.

impl Hash for Caps

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 PartialEq for Caps

fn eq(&self, other: &Caps) -> 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 Copy for Caps

impl Eq for Caps

impl StructuralPartialEq for Caps