rocsolver_cheevdj_batched Interface Reference#
hipfort_rocsolver::rocsolver_cheevdj_batched Interface Reference
The HEEVDJ_BATCHED functions computes the eigenvalues and optionally the eigenvectors of a batch of complex Hermitian matrices A_l. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocsolver_cheevdj_batched_ (handle, evect, uplo, n, a, lda, d, strided, myinfo, batch_count) |
Detailed Description
The HEEVDJ_BATCHED functions computes the eigenvalues and optionally the eigenvectors of a batch of complex Hermitian matrices A_l.
The eigenvalues are found using the iterative Jacobi algorithm and are returned in ascending order. The eigenvectors are computed using a divide-and-conquer approach depending on the value of evect. The computed eigenvectors are orthonormal.
- Parameters
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[in] handle - rocblas_handle. [in] evect - rocblas_evect. Specifies whether the eigenvectors are to be computed. If evect is rocblas_evect_original, then the eigenvectors are computed. rocblas_evect_tridiagonal is not supported.[in] uplo - rocblas_fill. Specifies whether the upper or lower part of the Hermitian matrices A_l is stored. If uplo indicates lower (or upper), then the upper (or lower) part of A_l is not used. [in] n - rocblas_int. n >= 0. Number of rows and columns of matrices A_l. [in,out] A - Array of pointers to type. Each pointer points to an array on the GPU of dimension lda*n. On entry, the matrices A_l. On exit, the eigenvectors of A_l if they were computed and the algorithm converged. Otherwise, the contents of A_l are destroyed. [in] lda - rocblas_int. lda >= n. Specifies the leading dimension of matrices A_l. [out] D - pointer to real type. Array on the GPU (the size depends on the value of strideD). The eigenvalues of A_l in increasing order. [in] strideD - rocblas_stride. Stride from the start of one vector D_l to the next one D_(l+1). There is no restriction for the value of strideD. The normal use case is strideD >= n. [out] myInfo - pointer to rocblas_int. Array of batch_count integers on the GPU. If info[l] = 0, successful exit for A_l. If info[l] = 1, the algorithm did not converge for A_l. [in] batch_count - rocblas_int. batch_count >= 0. Number of matrices in the batch.
Member Function/Subroutine Documentation
◆ rocsolver_cheevdj_batched_()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cheevdj_batched::rocsolver_cheevdj_batched_ | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_evect_original)), value | evect, | ||
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| type(c_ptr), value | a, | ||
| integer(c_int), value | lda, | ||
| type(c_ptr), value | d, | ||
| integer(c_int64_t), value | strided, | ||
| type(c_ptr), value | myinfo, | ||
| integer(c_int), value | batch_count | ||
| ) |
The documentation for this interface was generated from the following file: