SSYEVX Example
For a detailed description
and reference information on this function, please visit:
The routine computes all the eigenvalues and, optionally, the eigenvectors of a square
real symmetric matrix
A
.The eigenvector of
v
(j)A
satisfies the
following formula:A*v(j) = lambda(j)*v(j)
where
lambda
(j)The computed eigenvectors are orthonormal. The eigenvalues and eigenvectors can be
selected by specifying either a range of values or a range of indices of the desired
eigenvalues.
Fortran-77 Interface
C Interface
Please refer to the Matrix Layout section
of the C Interface Conventions for the description of Row Major (C default) and Column
Major (Fortran default).