rocblas_chemv_batched Interface Reference

rocblas_chemv_batched Interface Reference#

HIPFORT API Reference: hipfort_rocblas::rocblas_chemv_batched Interface Reference
Public Member Functions | List of all members
hipfort_rocblas::rocblas_chemv_batched Interface Reference

BLAS Level 2 API. More...

Public Member Functions

integer(kind(rocblas_status_success)) function rocblas_chemv_batched_ (handle, uplo, n, alpha, a, lda, x, incx, beta, y, incy, batch_count)
 

Detailed Description

BLAS Level 2 API.

The hemv_batched functions perform one of the matrix-vector operations: 

y_i := alpha*A_i*x_i + beta*y_i

where alpha and beta are scalars, x_i and y_i are n -element vectors, and A_i is an n by n Hermitian matrix, for each batch in i = [1, batch_count].

Parameters
[in]handle- [rocblas_handle] handle to the rocBLAS library context queue.
[in]uplo- [rocblas_fill]
  • rocblas_fill_upper: the upper triangular part of the Hermitian matrix A is supplied.
  • rocblas_fill_lower: the lower triangular part of the Hermitian matrix A is supplied.
[in]n- [rocblas_int] the order of each matrix A_i.
[in]alpha- device pointer or host pointer to scalar alpha.
[in]A- device array of device pointers storing each matrix A_i of dimension (lda, n). 
if uplo == rocblas_fill_upper:
    The upper triangular part of each A_i must contain
    the upper triangular part of a Hermitian matrix. The lower
    triangular part of each A_i will not be referenced.

if uplo == rocblas_fill_lower:
    The lower triangular part of each A_i must contain
    the lower triangular part of a Hermitian matrix. The upper
    triangular part of each A_i will not be referenced.
    As a Hermitian matrix, the imaginary part of the main diagonal
    of each A_i will not be referenced and is assumed to be == 0.
[in]lda- [rocblas_int] specifies the leading dimension of each A_i. Must be >= max(1, n).
[in]x- device array of device pointers storing each vector x_i.
[in]incx- [rocblas_int] specifies the increment for the elements of each x_i.
[in]beta- device pointer or host pointer to scalar beta.
[in,out]y- device array of device pointers storing each vector y_i.
[in]incy- [rocblas_int] specifies the increment for the elements of y.
[in]batch_count- [rocblas_int] number of instances in the batch.

Member Function/Subroutine Documentation

◆ rocblas_chemv_batched_()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_chemv_batched::rocblas_chemv_batched_ ( type(c_ptr), value  handle,
integer(kind(rocblas_fill_upper)), value  uplo,
integer(c_int), value  n,
complex(c_float_complex)  alpha,
type(c_ptr), value  a,
integer(c_int), value  lda,
type(c_ptr), value  x,
integer(c_int), value  incx,
complex(c_float_complex)  beta,
type(c_ptr), value  y,
integer(c_int), value  incy,
integer(c_int), value  batch_count 
)
The documentation for this interface was generated from the following file: