# rocblas_zherkx_batched Interface Reference#

HIPFORT API Reference: hipfort_rocblas::rocblas_zherkx_batched Interface Reference
hipfort_rocblas::rocblas_zherkx_batched Interface Reference

BLAS Level 3 API. More...

## Public Member Functions

integer(kind(rocblas_status_success)) function rocblas_zherkx_batched_ (handle, uplo, trans, n, k, alpha, A, lda, B, ldb, beta, C, ldc, batch_count)

integer(kind(rocblas_status_success)) function rocblas_zherkx_batched_full_rank (handle, uplo, trans, n, k, alpha, A, lda, B, ldb, beta, C, ldc, batch_count)

integer(kind(rocblas_status_success)) function rocblas_zherkx_batched_rank_0 (handle, uplo, trans, n, k, alpha, A, lda, B, ldb, beta, C, ldc, batch_count)

integer(kind(rocblas_status_success)) function rocblas_zherkx_batched_rank_1 (handle, uplo, trans, n, k, alpha, A, lda, B, ldb, beta, C, ldc, batch_count)

## Detailed Description

BLAS Level 3 API.

herkx_batched performs a batch of the matrix-matrix operations for a Hermitian rank-k update

C_i := alpha*op( A_i )*op( B_i )^H + beta*C_i

where alpha and beta are scalars, op(A_i) and op(B_i) are n by k matrices, and C_i is a n x n Hermitian matrix stored as either upper or lower. This routine should only be used when the caller can guarantee that the result of op( A )*op( B )^T will be Hermitian.

op( A_i ) = A_i, op( B_i ) = B_i, and A_i and B_i are n by k if trans == rocblas_operation_none
op( A_i ) = A_i^H, op( B_i ) = B_i^H,  and A_i and B_i are k by n if trans == rocblas_operation_conjugate_transpose

Parameters
 [in] handle [rocblas_handle] handle to the rocblas library context queue. [in] uplo [rocblas_fill] rocblas_fill_upper: C_i is an upper triangular matrix rocblas_fill_lower: C_i is a lower triangular matrix [in] trans [rocblas_operation] rocblas_operation_conjugate_transpose: op(A) = A^H rocblas_operation_none: op(A) = A [in] n [rocblas_int] n specifies the number of rows and columns of C_i. n >= 0. [in] k [rocblas_int] k specifies the number of columns of op(A). k >= 0. [in] alpha alpha specifies the scalar alpha. When alpha is zero then A is not referenced and A need not be set before entry. [in] A device array of device pointers storing each matrix_i A of dimension (lda, k) when trans is rocblas_operation_none, otherwise of dimension (lda, n) [in] lda [rocblas_int] lda specifies the first dimension of A_i. if trans = rocblas_operation_none, lda >= max( 1, n ), otherwise lda >= max( 1, k ). [in] B device array of device pointers storing each matrix_i B of dimension (ldb, k) when trans is rocblas_operation_none, otherwise of dimension (ldb, n) [in] ldb [rocblas_int] ldb specifies the first dimension of B_i. if trans = rocblas_operation_none, ldb >= max( 1, n ), otherwise ldb >= max( 1, k ). [in] beta beta specifies the scalar beta. When beta is zero then C need not be set before entry. [in] C device array of device pointers storing each matrix C_i on the GPU. The imaginary component of the diagonal elements are not used but are set to zero unless quick return. [in] ldc [rocblas_int] ldc specifies the first dimension of C. ldc >= max( 1, n ). [in] batch_count [rocblas_int] number of instances in the batch.

## ◆ rocblas_zherkx_batched_()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zherkx_batched::rocblas_zherkx_batched_ ( type(c_ptr), value handle, integer(kind(rocblas_fill_upper)), value uplo, integer(kind(rocblas_operation_none)), value trans, integer(c_int), value n, integer(c_int), value k, complex(c_double_complex) alpha, type(c_ptr) A, integer(c_int), value lda, type(c_ptr) B, integer(c_int), value ldb, real(c_double) beta, type(c_ptr) C, integer(c_int), value ldc, integer(c_int), value batch_count )

## ◆ rocblas_zherkx_batched_full_rank()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zherkx_batched::rocblas_zherkx_batched_full_rank ( type(c_ptr) handle, integer(kind(rocblas_fill_upper)) uplo, integer(kind(rocblas_operation_none)) trans, integer(c_int) n, integer(c_int) k, complex(c_double_complex) alpha, complex(c_double_complex), dimension(:,:,:), target A, integer(c_int) lda, complex(c_double_complex), dimension(:,:,:), target B, integer(c_int) ldb, real(c_double) beta, complex(c_double_complex), dimension(:,:,:), target C, integer(c_int) ldc, integer(c_int) batch_count )

## ◆ rocblas_zherkx_batched_rank_0()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zherkx_batched::rocblas_zherkx_batched_rank_0 ( type(c_ptr) handle, integer(kind(rocblas_fill_upper)) uplo, integer(kind(rocblas_operation_none)) trans, integer(c_int) n, integer(c_int) k, complex(c_double_complex) alpha, complex(c_double_complex), target A, integer(c_int) lda, complex(c_double_complex), target B, integer(c_int) ldb, real(c_double) beta, complex(c_double_complex), target C, integer(c_int) ldc, integer(c_int) batch_count )

## ◆ rocblas_zherkx_batched_rank_1()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zherkx_batched::rocblas_zherkx_batched_rank_1 ( type(c_ptr) handle, integer(kind(rocblas_fill_upper)) uplo, integer(kind(rocblas_operation_none)) trans, integer(c_int) n, integer(c_int) k, complex(c_double_complex) alpha, complex(c_double_complex), dimension(:), target A, integer(c_int) lda, complex(c_double_complex), dimension(:), target B, integer(c_int) ldb, real(c_double) beta, complex(c_double_complex), dimension(:), target C, integer(c_int) ldc, integer(c_int) batch_count )

The documentation for this interface was generated from the following file: