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- CALL LA_SYGVX / LA_HEGVX
( A, B, W, ITYPE=itype, JOBZ=jobz, UPLO=uplo, VL=vl, VU=vu, &
IL=il, IU=iu, M=m, IFAIL=ifail, ABSTOL=abstol, INFO=info )
Compute selected eigenvalues and, optionally, the eigenvectors
of a real generalized symmetric-definite or complex Hermitian-definite
eigenproblem. Eigenvalues and eigenvectors can be selected by specifying
either a range of values or a range of indices for the desired eigenvalues.
- CALL LA_SPGVX / LA_HPGVX
( AP, BP, W, ITYPE=itype, UPLO=uplo, Z=z, VL= vl, VU= vu, &
IL= il, IU= iu, M= m, IFAIL= ifail, ABSTOL= abstol, INFO=info )
Compute selected eigenvalues and, optionally, the eigenvectors
of a real generalized symmetric-definite or complex Hermitian-definite
eigenproblem. Eigenvalues and eigenvectors can be selected by specifying
either a range of values or a range of indices for the desired eigenvalues.
The matrices are in packed storage.
- CALL LA_SBGVX / LA_HBGVX
( AB, BB, W, UPLO=uplo, Z=z, VL=vl, VU=vu, IL=il, IU=iu,
M=m, IFAIL=ifail, Q=q, ABSTOL=abstol, INFO=info )
Compute selected eigenvalues and, optionally, the corresponding eigenvectors
of a real generalized symmetric-definite or complex Hermitian-definite
eigenproblem. Eigenvalues and eigenvectors can be selected by specifying
either a range of values or a range of indices for the desired eigenvalues.
- CALL LA_GGESX
( A, B, <alpha>, BETA, VSL=vsl, VSR=vsr, SELECT=select, &
SDIM=sdim, RCONDE=rconde, RCONDV=rcondv,INFO=info )
Computes for a pair of n by n real or complex matrices
(A, B) the (generalized) real or complex Schur form, the generalized
eigenvalues in the form of scalar pairs (alpha,beta), and, optionally,
the left and/or right Schur vectors. also computes two reciprocal condition
numbers for the average of the selected eigenvalues and reciprocal
condition numbers for the right and left deflating subspaces corresponding
to the selected eigenvalues.
<alpha> ::= ALPHAR, ALPHAI | ALPHA
- CALL LA_GGEVX
( A, B, <alpha>, BETA, VL=vl, VR=vr, BALANC=balanc, &
ILO=ilo, IHI=ihi, LSCALE=lscale, RSCALE=rscale, ABNRM=abnrm, &
BBNRM=bbnrm, RCONDE=rconde, RCONDV=rcondv, INFO=info )
Computes for a pair of n-by-n real or complex matrices
(A, B) the generalized eigenvalues in the form of scalar pairs
(alpha; beta) and, optionally, the left and/or right generalized
eigenvectors. Also computes a balancing transformation
(to improve the conditioning of the eigenvalues and eigenvectors),
reciprocal condition numbers for the eigenvalues, and reciprocal
condition numbers for the right eigenvectors.
<alpha> ::= ALPHAR, ALPHAI | ALPHA
Next: Home
Up: Index of LAPACK95 Routines
Previous: Divide and Conquer Driver
Minka Marinova
2000-09-07