scid ~John-Colvin-patch-1 (2022-05-06T09:24:25.9708105)

eigenvalues

scid linalg

Calculate the eigenvalues of a general dense square matrix.

If some eigenvalues cannot be calculated, the algorithm throws an EigenvalueException containing an array of the ones that have been calculated.

  1. EigenvalueType!ElementT[] eigenvalues(MatrixView!(ElementT, stor, tri) m)
    EigenvalueType!ElementT[]
    eigenvalues
    (
    ElementT
    Storage stor
    Triangle tri
    )
    (
    MatrixView!(ElementT, stor, tri) m
    )
    if (
    stor == Storage.General
    )
  2. ComplexT[] eigenvalues(MatrixView!(ElementT, stor, tri) m, ComplexT[] buffer)
  3. T[] eigenvalues(MatrixView!(T, stor, tri) m, T[] buffer)
  4. T[] eigenvalues(MatrixView!(T, stor, tri) m, T[] buffer)

Parameters

m MatrixView!(ElementT, stor, tri)

An n-by-n symmetric matrix.

Examples

auto m = matrix!double(3, 3);
...
auto e = eigenvalues(m);

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