# rocblas_zsyrkx Interface Reference#

HIPFORT API Reference: hipfort_rocblas::rocblas_zsyrkx Interface Reference
hipfort_rocblas::rocblas_zsyrkx Interface Reference

BLAS Level 3 API. More...

## Public Member Functions

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

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

integer(kind(rocblas_status_success)) function rocblas_zsyrkx_rank_0 (handle, uplo, trans, n, k, alpha, A, lda, B, ldb, beta, C, ldc)

integer(kind(rocblas_status_success)) function rocblas_zsyrkx_rank_1 (handle, uplo, trans, n, k, alpha, A, lda, B, ldb, beta, C, ldc)

## Detailed Description

BLAS Level 3 API.

syrkx performs one of the matrix-matrix operations for a symmetric rank-k update

C := alpha*op( A )*op( B )^T + beta*C

where alpha and beta are scalars, op(A) and op(B) are n by k matrix, and C is a symmetric n x n 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 symmetric.

op( A ) = A, op( B ) = B, and A and B are n by k if trans == rocblas_operation_none
op( A ) = A^T, op( B ) = B^T,  and A and B are k by n if trans == rocblas_operation_transpose

Parameters
 [in] handle [rocblas_handle] handle to the rocblas library context queue. [in] uplo [rocblas_fill] rocblas_fill_upper: C is an upper triangular matrix rocblas_fill_lower: C is a lower triangular matrix [in] trans [rocblas_operation] rocblas_operation_transpose: op( A ) = A^T, op( B ) = B^T rocblas_operation_none: op( A ) = A, op( B ) = B [in] n [rocblas_int] n specifies the number of rows and columns of C. n >= 0. [in] k [rocblas_int] k specifies the number of columns of op(A) and op(B). 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 pointer storing matrix A on the GPU. Martrix dimension is ( lda, k ) when if trans = rocblas_operation_none, otherwise (lda, n) only the upper/lower triangular part is accessed. [in] lda [rocblas_int] lda specifies the first dimension of A. if trans = rocblas_operation_none, lda >= max( 1, n ), otherwise lda >= max( 1, k ). [in] B pointer storing matrix B on the GPU. Martrix dimension is ( ldb, k ) when if trans = rocblas_operation_none, otherwise (ldb, n) only the upper/lower triangular part is accessed. [in] ldb [rocblas_int] ldb specifies the first dimension of B. 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 pointer storing matrix C on the GPU. [in] ldc [rocblas_int] ldc specifies the first dimension of C. ldc >= max( 1, n ).

## ◆ rocblas_zsyrkx_()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zsyrkx::rocblas_zsyrkx_ ( 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), value A, integer(c_int), value lda, type(c_ptr), value B, integer(c_int), value ldb, complex(c_double_complex) beta, type(c_ptr), value C, integer(c_int), value ldc )

## ◆ rocblas_zsyrkx_full_rank()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zsyrkx::rocblas_zsyrkx_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, complex(c_double_complex) beta, complex(c_double_complex), dimension(:,:), target C, integer(c_int) ldc )

## ◆ rocblas_zsyrkx_rank_0()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zsyrkx::rocblas_zsyrkx_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, complex(c_double_complex) beta, complex(c_double_complex), target C, integer(c_int) ldc )

## ◆ rocblas_zsyrkx_rank_1()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zsyrkx::rocblas_zsyrkx_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, complex(c_double_complex) beta, complex(c_double_complex), dimension(:), target C, integer(c_int) ldc )

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