Struct libusb::Version

pub struct Version(pub u8, pub u8, pub u8);

A three-part version consisting of major, minor, and sub minor components.

This can be used to represent versions of the format J.M.N, where J is the major version, M is the minor version, and N is the sub minor version. A version is constructed by providing the fields in the same order to the tuple. For example:

libusb::Version(0, 2, 1);

represents the version 0.2.1.

The intended use case of Version is to extract meaning from the version fields in USB descriptors, such as bcdUSB and bcdDevice in device descriptors.

Methods

impl Version

fn from_bcd(raw: u16) -> Self

Extracts a version from a binary coded decimal (BCD) field. BCD fields exist in USB descriptors as 16-bit integers encoding a version as 0xJJMN, where JJ is the major version, M is the minor version, and N is the sub minor version. For example, 2.0 is endoded as 0x0200 and 1.1 is encoded as 0x0110.

fn major(&self) -> u8

Returns the major version.

fn minor(&self) -> u8

Returns the minor version.

fn sub_minor(&self) -> u8

Returns the sub minor version.

Trait Implementations

impl Hash for Version

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

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

Feeds a slice of this type into the state provided.

impl Copy for Version

impl Clone for Version

fn clone(&self) -> Version

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Eq for Version

impl PartialEq for Version

fn eq(&self, __arg_0: &Version) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Version) -> bool

This method tests for !=.

impl Debug for Version

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.