PLASMA_zhegst_Tile - reduces a complex Hermitian-definite generalized eigenproblem to standard form. If PlasmaItype == 1, the problem is A*x = lambda*B*x, and A is overwritten by inv(U**H)*A*inv(U) or inv(L)*A*inv(L**H) If PlasmaItype == 2 or 3, the problem is A*B*x = lambda*x or B*A*x = lambda*x, and A is overwritten by U*A*U**H or L**H*A*L. B must have been previously factorized as U**H*U or L*L**H by PLASMA_ZPOTRF. ONLY PlasmaItype == 1 and PlasmaLower supported! Tile equivalent of PLASMA_zhegst(). Operates on matrices stored by tiles. All matrices are passed through descriptors. All dimensions are taken from the descriptors.
- Parameters
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[in] | itype | Intended usage: = 1: A*x=(lambda)*B*x = 2: A*Bx=(lambda)*x = 3: B*A*x=(lambda)*x Currently only PlasmaItype == 1 is supported. |
[in] | uplo | Specifies whether the matrix A is upper triangular or lower triangular: = PlasmaUpper: Upper triangle of A is stored; = PlasmaLower: Lower triangle of A is stored. Currently only PlasmaLower is supported. |
[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 return value == 0, the transformed matrix, stored in the same format as A. |
[in,out] | B | On entry, the triangular factor from the Cholesky factorization of B, as returned by PLASMA_ZPOTRF. |
- Returns
- Return values
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PLASMA_SUCCESS | successful exit |
<0 | if -i, the i-th argument had an illegal value |
- See also
- PLASMA_zhegst
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PLASMA_zhegst_Tile_Async
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PLASMA_chegst_Tile
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PLASMA_dsygst_Tile
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PLASMA_ssygst_Tile
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PLASMA_zhegst_Tile