Struct DSymmetricEigen2 

pub struct DSymmetricEigen2 {
    pub eigenvalues: DVec2,
    pub eigenvectors: DMat2,
}

The eigen decomposition of a symmetric 2x2 matrix (f64 precision).

Fields

eigenvalues: DVec2

The eigenvalues of the symmetric 2x2 matrix.

eigenvectors: DMat2

The two eigenvectors of the symmetric 2x2 matrix (as columns).

Implementations

impl DSymmetricEigen2

pub fn new(mat: DMat2) -> Self

Computes the eigen decomposition of the given symmetric 2x2 matrix.

The eigenvalues are returned in descending order eigen1 > eigen2. This can be reversed with the reverse method.

pub fn reverse(&self) -> Self

Reverses the order of the eigenvalues and their corresponding eigenvectors.

pub fn eigenvalues(mat: DMat2) -> DVec2

Computes the eigenvalues of a symmetric 2x2 matrix.

Reference: https://croninprojects.org/Vince/Geodesy/FindingEigenvectors.pdf

pub fn eigenvector(mat: DMat2, eigenvalue: f64) -> DVec2

Computes the unit-length eigenvector corresponding to the given eigenvalue of the symmetric 2x2 mat.

Reference: https://croninprojects.org/Vince/Geodesy/FindingEigenvectors.pdf

Trait Implementations

impl Clone for DSymmetricEigen2

fn clone(&self) -> DSymmetricEigen2

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DSymmetricEigen2

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

Formats the value using the given formatter.

impl From<DSymmetricEigen2> for SymmetricEigen2

fn from(e: DSymmetricEigen2) -> Self

Converts to this type from the input type.

impl From<SymmetricEigen2> for DSymmetricEigen2

fn from(e: SymmetricEigen2) -> Self

Converts to this type from the input type.

impl PartialEq for DSymmetricEigen2

fn eq(&self, other: &DSymmetricEigen2) -> 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 DSymmetricEigen2

impl StructuralPartialEq for DSymmetricEigen2