Computes selected eigenvalues and, optionally, eigenvectors of a real generalized symmetric definite eigenproblem.
routinecomputes all the eigenvalues, and optionally, the eigenvectors of a real generalized symmetric-definite eigenproblem, of the form
xdenotes eigen vectors, λ (
lambda) denotes eigenvalues,
A(is assumed to symmetric, and sub(
is also positive definite.
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Notice revision #20110804
This notice covers the following instruction sets: SSE2, SSE4.2, AVX2, AVX-512.
- (global)Must be 1 or 2 or 3.INTEGER.Specifies the problem type to be solved:If, the problem type isibtype= 1sub(;A)*x=*sub(lambdaB)*xIf, the problem type isibtype= 2sub(;A)*sub(B)*x=lambda*xIf, the problem type isibtype= 3sub(B)*sub(A)*x<