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All eigenvalues of generalized real symmetricdefinite eigenproblem 
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All eigenvalues and eigenvectors of generalized real symmetricdefinite eigenproblem 
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All eigenvalues and optionally eigenvectors of real generalized eigenproblem, by QZ algorithm

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Reduction to standard form of real symmetricdefinite generalized eigenproblem Ax = λ Bx, ABx = λ x or BAx = λ x, B factorized by f07fdc 
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Reduction to standard form of complex Hermitiandefinite generalized eigenproblem Ax = λ Bx, ABx = λ x or BAx = λ x, B factorized by f07frc 
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Reduction to standard form of real symmetricdefinite generalized eigenproblem Ax=λ Bx, ABx = λ x or BAx = λ x, packed storage, B factorized by f07gdc 
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Reduction to standard form of complex Hermitiandefinite generalized eigenproblem Ax=λ Bx, ABx = λ x or BAx = λ x, packed storage, B factorized by f07grc 
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Reduction of real symmetricdefinite banded generalized eigenproblem Ax = λ Bx to standard form Cy = λ y, such that C has the same bandwidth as A 
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Reduction of complex Hermitiandefinite banded generalized eigenproblem Ax = λ Bx to standard form Cy = λ y, such that C has the same bandwidth as A 