rocblas_dspr2 Interface Reference#
hipfort_rocblas::rocblas_dspr2 Interface Reference
BLAS Level 2 API. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocblas_dspr2_ (handle, uplo, n, alpha, x, incx, y, incy, AP) |
| integer(kind(rocblas_status_success)) function | rocblas_dspr2_rank_0 (handle, uplo, n, alpha, x, incx, y, incy, AP) |
| integer(kind(rocblas_status_success)) function | rocblas_dspr2_rank_1 (handle, uplo, n, alpha, x, incx, y, incy, AP) |
Detailed Description
BLAS Level 2 API.
spr2 performs the matrix-vector operation
A := A + alpha*x*y**T + alpha*y*x**T
where alpha is a scalar, x and y are vectors, and A is an n by n symmetric matrix, supplied in packed form.
- Parameters
-
[in] handle [rocblas_handle] handle to the rocblas library context queue. [in] uplo [rocblas_fill] specifies whether the upper 'rocblas_fill_upper' or lower 'rocblas_fill_lower' rocblas_fill_upper: The upper triangular part of A is supplied in AP. rocblas_fill_lower: The lower triangular part of A is supplied in AP. [in] n [rocblas_int] the number of rows and columns of matrix A, must be at least 0. [in] alpha device pointer or host pointer to scalar alpha. [in] x device pointer storing vector x. [in] incx [rocblas_int] specifies the increment for the elements of x. [in] y device pointer storing vector y. [in] incy [rocblas_int] specifies the increment for the elements of y. [in,out] AP device pointer storing the packed version of the specified triangular portion of the symmetric matrix A. Of at least size ((n * (n + 1)) 2). if uplo == rocblas_fill_upper: The upper triangular portion of the symmetric matrix A is supplied. The matrix is compacted so that AP contains the triangular portion column-by-column so that: AP(0) = A(0,0) AP(1) = A(0,1) AP(2) = A(1,1), etc. Ex: (rocblas_fill_upper; n = 4) 1 2 4 7 2 3 5 8 --—> [1, 2, 3, 4, 5, 6, 7, 8, 9, 0] 4 5 6 9 7 8 9 0 if uplo == rocblas_fill_lower: The lower triangular portion of the symmetric matrix A is supplied. The matrix is compacted so that AP contains the triangular portion column-by-column so that: AP(0) = A(0,0) AP(1) = A(1,0) AP(n) = A(2,1), etc. Ex: (rocblas_fill_lower; n = 4) 1 2 3 4 2 5 6 7 --—> [1, 2, 3, 4, 5, 6, 7, 8, 9, 0] 3 6 8 9 4 7 9 0
Member Function/Subroutine Documentation
◆ rocblas_dspr2_()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_dspr2::rocblas_dspr2_ | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| real(c_double) | alpha, | ||
| type(c_ptr), value | x, | ||
| integer(c_int), value | incx, | ||
| type(c_ptr), value | y, | ||
| integer(c_int), value | incy, | ||
| type(c_ptr), value | AP | ||
| ) |
◆ rocblas_dspr2_rank_0()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_dspr2::rocblas_dspr2_rank_0 | ( | type(c_ptr) | handle, |
| integer(kind(rocblas_fill_upper)) | uplo, | ||
| integer(c_int) | n, | ||
| real(c_double) | alpha, | ||
| real(c_double), target | x, | ||
| integer(c_int) | incx, | ||
| real(c_double), target | y, | ||
| integer(c_int) | incy, | ||
| type(c_ptr) | AP | ||
| ) |
◆ rocblas_dspr2_rank_1()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_dspr2::rocblas_dspr2_rank_1 | ( | type(c_ptr) | handle, |
| integer(kind(rocblas_fill_upper)) | uplo, | ||
| integer(c_int) | n, | ||
| real(c_double) | alpha, | ||
| real(c_double), dimension(:), target | x, | ||
| integer(c_int) | incx, | ||
| real(c_double), dimension(:), target | y, | ||
| integer(c_int) | incy, | ||
| type(c_ptr) | AP | ||
| ) |
The documentation for this interface was generated from the following file: