# rocblas_zgbmv Interface Reference#

HIPFORT API Reference: hipfort_rocblas::rocblas_zgbmv Interface Reference
hipfort_rocblas::rocblas_zgbmv Interface Reference

BLAS Level 2 API. More...

## Public Member Functions

integer(kind(rocblas_status_success)) function rocblas_zgbmv_ (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy)

integer(kind(rocblas_status_success)) function rocblas_zgbmv_full_rank (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy)

integer(kind(rocblas_status_success)) function rocblas_zgbmv_rank_0 (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy)

integer(kind(rocblas_status_success)) function rocblas_zgbmv_rank_1 (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy)

## Detailed Description

BLAS Level 2 API.

gbmv performs one of the matrix-vector operations

y := alpha*A*x    + beta*y,   or
y := alpha*A**T*x + beta*y,   or
y := alpha*A**H*x + beta*y,


where alpha and beta are scalars, x and y are vectors and A is an m by n banded matrix with kl sub-diagonals and ku super-diagonals.

Parameters
 [in] handle [rocblas_handle] handle to the rocblas library context queue. [in] trans [rocblas_operation] indicates whether matrix A is tranposed (conjugated) or not [in] m [rocblas_int] number of rows of matrix A [in] n [rocblas_int] number of columns of matrix A [in] kl [rocblas_int] number of sub-diagonals of A [in] ku [rocblas_int] number of super-diagonals of A [in] alpha device pointer or host pointer to scalar alpha. [in] A device pointer storing banded matrix A. Leading (kl + ku + 1) by n part of the matrix contains the coefficients of the banded matrix. The leading diagonal resides in row (ku + 1) with the first super-diagonal above on the RHS of row ku. The first sub-diagonal resides below on the LHS of row ku + 2. This propogates up and down across sub/super-diagonals. Ex: (m = n = 7; ku = 2, kl = 2) 1 2 3 0 0 0 0 0 0 3 3 3 3 3 4 1 2 3 0 0 0 0 2 2 2 2 2 2 5 4 1 2 3 0 0 -—> 1 1 1 1 1 1 1 0 5 4 1 2 3 0 4 4 4 4 4 4 0 0 0 5 4 1 2 0 5 5 5 5 5 0 0 0 0 0 5 4 1 2 0 0 0 0 0 0 0 0 0 0 0 5 4 1 0 0 0 0 0 0 0 Note that the empty elements which don't correspond to data will not be referenced. [in] lda [rocblas_int] specifies the leading dimension of A. Must be >= (kl + ku + 1) [in] x device pointer storing vector x. [in] incx [rocblas_int] specifies the increment for the elements of x. [in] beta device pointer or host pointer to scalar beta. [in,out] y device pointer storing vector y. [in] incy [rocblas_int] specifies the increment for the elements of y.

## ◆ rocblas_zgbmv_()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv::rocblas_zgbmv_ ( type(c_ptr), value handle, integer(kind(rocblas_operation_none)), value trans, integer(c_int), value m, integer(c_int), value n, integer(c_int), value kl, integer(c_int), value ku, complex(c_double_complex) alpha, type(c_ptr), value A, integer(c_int), value lda, type(c_ptr), value x, integer(c_int), value incx, complex(c_double_complex) beta, type(c_ptr), value y, integer(c_int), value incy )

## ◆ rocblas_zgbmv_full_rank()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv::rocblas_zgbmv_full_rank ( type(c_ptr) handle, integer(kind(rocblas_operation_none)) trans, integer(c_int) m, integer(c_int) n, integer(c_int) kl, integer(c_int) ku, complex(c_double_complex) alpha, complex(c_double_complex), dimension(:,:), target A, integer(c_int) lda, complex(c_double_complex), dimension(:), target x, integer(c_int) incx, complex(c_double_complex) beta, complex(c_double_complex), dimension(:), target y, integer(c_int) incy )

## ◆ rocblas_zgbmv_rank_0()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv::rocblas_zgbmv_rank_0 ( type(c_ptr) handle, integer(kind(rocblas_operation_none)) trans, integer(c_int) m, integer(c_int) n, integer(c_int) kl, integer(c_int) ku, complex(c_double_complex) alpha, complex(c_double_complex), target A, integer(c_int) lda, complex(c_double_complex), target x, integer(c_int) incx, complex(c_double_complex) beta, complex(c_double_complex), target y, integer(c_int) incy )

## ◆ rocblas_zgbmv_rank_1()

 integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv::rocblas_zgbmv_rank_1 ( type(c_ptr) handle, integer(kind(rocblas_operation_none)) trans, integer(c_int) m, integer(c_int) n, integer(c_int) kl, integer(c_int) ku, complex(c_double_complex) alpha, complex(c_double_complex), dimension(:), target A, integer(c_int) lda, complex(c_double_complex), dimension(:), target x, integer(c_int) incx, complex(c_double_complex) beta, complex(c_double_complex), dimension(:), target y, integer(c_int) incy )

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