PLASMA: PLASMA_ssygv

PLASMA 2.4.6

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PLASMA_sgebrd
PLASMA_sgelqf
PLASMA_sgelqs
PLASMA_sgels
PLASMA_sgemm
PLASMA_sgeqrf
PLASMA_sgeqrs
PLASMA_sgesv
PLASMA_sgesv_incpiv
PLASMA_sgesvd
PLASMA_sgetrf
PLASMA_sgetrf_incpiv
PLASMA_sgetri
PLASMA_sgetrs
PLASMA_sgetrs_incpiv
PLASMA_slacpy
PLASMA_slange
PLASMA_slansy
PLASMA_sLapack_to_Tile
PLASMA_slaset
PLASMA_slaswp
PLASMA_slaswpc
PLASMA_slauum
PLASMA_sorglq
PLASMA_sorgqr
PLASMA_sormlq
PLASMA_sormqr
PLASMA_splgsy
PLASMA_splrnt
PLASMA_sposv
PLASMA_spotrf
PLASMA_spotri
PLASMA_spotrs
PLASMA_ssyev
PLASMA_ssyevd
PLASMA_ssygst
PLASMA_ssygv
PLASMA_ssygvd
PLASMA_ssymm
PLASMA_ssyr2k
PLASMA_ssyrk
PLASMA_ssytrd
PLASMA_sTile_to_Lapack
PLASMA_strmm
PLASMA_strsm
PLASMA_strsmpl
PLASMA_strsmrv
PLASMA_strtri
int PLASMA_ssygv | ( | PLASMA_enum | itype,
|  | PLASMA_enum | jobz,
|  | PLASMA_enum | uplo,
|  | int | N,
|  | float * | A,
|  | int | LDA,
|  | float * | B,
|  | int | LDB,
|  | float * | W,
|  | PLASMA_desc * | descT,
|  | float * | Q,
|  | int | LDQ
| ) |  |
  PLASMA_ssygv - Computes all eigenvalues and, optionally, eigenvectors of a complex generalized Hermitian-definite eigenproblem of the form: A*x=(lambda)*B*x, A*Bx=(lambda)*x, or B*A*x=(lambda)*x. Here A and B are assumed to be Hermitian and B is also positive definite. Parameters
  [in] | itype | Intended usage: = 1: A*x=(lambda)*B*x = 2: A*Bx=(lambda)*x = 3: B*A*x=(lambda)*x
  [in] | jobz | Intended usage: = PlasmaNoVec: computes eigenvalues only; = PlasmaVec: computes eigenvalues and eigenvectors.
  [in] | uplo | Specifies whether the matrix A is upper triangular or lower triangular: = PlasmaUpper: Upper triangle of A and B are stored; = PlasmaLower: Lower triangle of A and B are stored.
  [in] | N | The order of the matrix A. N >= 0.
  [in,out] | A | On entry, the symmetric (or Hermitian) matrix A. If uplo = PlasmaUpper, the leading N-by-N upper triangular part of A contains the upper triangular part of the matrix A, and the strictly lower triangular part of A is not referenced. If uplo = PlasmaLower, the leading N-by-N lower triangular part of A contains the lower triangular part of the matrix A, and the strictly upper triangular part of A is not referenced. On exit, if jobz = PlasmaVec, then if return value = 0, A contains the matrix Z of eigenvectors. The eigenvectors are normalized as follows: if ITYPE = 1 or 2, Z**T*B*Z = I; if ITYPE = 3, Z**T*inv(B)*Z = I. If jobz = PlasmaNoVec, then on exit the lower triangle (if uplo = PlasmaLower) or the upper triangle (if uplo = PlasmaUpper) of A, including the diagonal, is destroyed.
  [in] | LDA | The leading dimension of the array A. LDA >= max(1,N).
  [in,out] | B | On entry, the symmetric (or Hermitian) positive definite matrix B. If uplo = PlasmaUpper, the leading N-by-N upper triangular part of B contains the upper triangular part of the matrix B, and the strictly lower triangular part of B is not referenced. If uplo = PlasmaLower, the leading N-by-N lower triangular part of B contains the lower triangular part of the matrix B, and the strictly upper triangular part of B is not referenced. On exit, if return value <= N, the part of B containing the matrix is overwritten by the triangular factor U or L from the Cholesky factorization B = U**T*U or B = L*L**T.
  [in] | LDB | The leading dimension of the array B. LDA >= max(1,N).
  [out] | W | On exit, if info = 0, the eigenvalues.
  [in,out] | descT | On entry, descriptor as return by PLASMA_Alloc_Workspace_ssygv On exit, contains auxiliary factorization data.
  [out] | Q | On exit, if jobz = PlasmaVec and info = 0, the eigenvectors.
  [in] | LDQ | The leading dimension of Q.
  Returns Return values
  PLASMA_SUCCESS | successful exit
  <0 | if -i, the i-th argument had an illegal value
  <=N | if INFO = i, plasma_ssygv failed to converge; i off-diagonal elements of an intermediate tridiagonal form did not converge to zero.
  >N | if INFO = N + i, for 1 <= i <= N, then the leading minor of order i of B is not positive definite. The factorization of B could not be completed and no eigenvalues or eigenvectors were computed.
See Also PLASMA_ssygv_Tile PLASMA_ssygv_Tile_Async PLASMA_chegv PLASMA_dsygv PLASMA_ssygv