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- CALL LA_SYEVX / LA_HEEVX
( A, W, JOBZ=jobz, UPLO=uplo, VL=vl, VU=vu, &
IL=il, IU=iu, M=m, IFAIL=ifail, ABSTOL=abstol, INFO=info )
Computes selected eigenvalues and, optionally,
eigenvectors of a real symmetric/complex Hermitian matrix A.
Eigenvalues and eigenvectors can be selected by specifying either a
range of values or a range of indices for the desired eigenvalues.
- CALL LA_SPEVX / LA_HPEVX
( AP, W, UPLO=uplo, Z=z, VL=vl, VU=vu, &
IL=il, IU=iu, M=m, IFAIL=ifail, ABSTOL=abstol, INFO=info )
Computes all the eigenvalues and, optionally, eigenvectors of a
real symmetric / complex Hermitian matrix A in packed storage.
Eigenvalues and eigenvectors can be selected by specifying either a range
of values or a range of indices for the desired eigenvalues.
- CALL LA_SBEVX / LA_HBEVX
( AB, W, UPLO=uplo, Z=z, VL=vl, VU=vu, &
IL=il, IU=iu, M=m, IFAIL=ifail, Q=q, ABSTOL=abstol, INFO=info )
Computes selected eigenvalues and, optionally, the corresponding
eigenvectors of a real symmetric / complex Hermitian band matrix A.
Eigenvalues and eigenvectors can be selected by specifying either
a range of values or a range of indices for the desired eigenvalues.
- CALL LA_STEVX
( D, E, W, Z=z, VL=vl, VU=vu, IL=il, IU=iu, M=m, &
IFAIL=ifail, ABSTOL=abstol, INFO=info )
Computes selected eigenvalues and, optionally, the corresponding
eigenvectors of a
real symmetric tridiagonal matrix A. Eigenvalues and
eigenvectors can be selected by specifying either a range of values
or a range of indices for the desired eigenvalues.
- CALL LA_GEESX
(A, <w>, VS=vs, SELECT=select, SDIM=sdim, RCONDE=rconde, &
RCONDV=rcondv, INFO=info )
Computes for a non-symmetric matrix A, the eigenvalues,
the Schur form T, and, optionally, the matrix of Schur
vectors Z. Optionally, it also orders the eigenvalues on the diagonal of the
real Schur form so that selected eigenvalues are at the top left;
computes a reciprocal condition number for the average of the
selected eigenvalues, and computes a reciprocal condition
number for the right invariant subspace corresponding to the
selected eigenvalues. <w> is either WR, WI or W.
- CALL LA_GEEVX
( A, <w>, VL=vl, VR=vr, BALANC=balanc, ILO=ilo, IHI=ihi, &
SCALE=scale, ABNRM=abnrm, RCONDE=rconde, &
RCONDV=rcondv, INFO=info )
Computes for a non-symmetric matrix A, the
eigenvalues and, optionally, the left and/or right eigenvectors.
Optionally also, it computes a balancing transformation to improve
the conditioning of the eigenvalues and eigenvectors (ILO, IHI,
SCALE, and ABNRM), reciprocal condition numbers for the eigenvalues
(RCONDE), and reciprocal condition numbers for the right
eigenvectors (RCONDV). <w> is either WR, WI or W.
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Next: Driver Routines for Generalized
Up: Index of LAPACK95 Routines
Previous: Driver Routines for Standard
Minka Marinova
2000-09-07