a question about eig() calculating Hermitian matrix

The doc of eig() says the Lapack routine of ZHEEV is used to calculate the eigenvalues and eigenvectors of a Hermitian matrix. My question is how eig() recognizes the input as a Hermitian matrix? Or should the user specifically tell matlab that it is Hermitian, by certain forms of input of eig()?

Answer 1

[Krishna Kumar]

The function could itself check the property of matrix and assign the suitable routine, not a big task of course. If you want eig to perform a specific factorization, you need to mention it while calling eig.

[Pengke]

Thank you Krishna. Does that mean eig() itself is the most optimized routine for eigenvalue problems of Hermitian matrices?

[Krishna Kumar]

I do hope so.