rocblas_zhpr2 Interface Reference#
hipfort_rocblas::rocblas_zhpr2 Interface Reference
BLAS Level 2 API. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocblas_zhpr2_ (handle, uplo, n, alpha, x, incx, y, incy, AP) |
| integer(kind(rocblas_status_success)) function | rocblas_zhpr2_rank_0 (handle, uplo, n, alpha, x, incx, y, incy, AP) |
| integer(kind(rocblas_status_success)) function | rocblas_zhpr2_rank_1 (handle, uplo, n, alpha, x, incx, y, incy, AP) |
Detailed Description
BLAS Level 2 API.
hpr2 performs the matrix-vector operations
A := A + alpha*x*y**H + conj(alpha)*y*x**H
where alpha is a complex scalar, x and y are vectors, and A is an n by n Hermitian 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 Hermitian matrix A. Of at least size ((n * (n + 1)) 2). if uplo == rocblas_fill_upper: The upper triangular portion of the Hermitian 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 = 3) (1, 0) (2, 1) (4,9) (2,-1) (3, 0) (5,3) --—> [(1,0), (2,1), (3,0), (4,9), (5,3), (6,0)] (4,-9) (5,-3) (6,0) if uplo == rocblas_fill_lower: The lower triangular portion of the Hermitian 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(2) = A(2,1), etc. Ex: (rocblas_fill_lower; n = 3) (1, 0) (2, 1) (4,9) (2,-1) (3, 0) (5,3) --—> [(1,0), (2,-1), (4,-9), (3,0), (5,-3), (6,0)] (4,-9) (5,-3) (6,0) Note that the imaginary part of the diagonal elements are not accessed and are assumed to be 0.
Member Function/Subroutine Documentation
◆ rocblas_zhpr2_()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zhpr2::rocblas_zhpr2_ | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| complex(c_double_complex) | 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_zhpr2_rank_0()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zhpr2::rocblas_zhpr2_rank_0 | ( | type(c_ptr) | handle, |
| integer(kind(rocblas_fill_upper)) | uplo, | ||
| integer(c_int) | n, | ||
| complex(c_double_complex) | alpha, | ||
| complex(c_double_complex), target | x, | ||
| integer(c_int) | incx, | ||
| complex(c_double_complex), target | y, | ||
| integer(c_int) | incy, | ||
| type(c_ptr) | AP | ||
| ) |
◆ rocblas_zhpr2_rank_1()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zhpr2::rocblas_zhpr2_rank_1 | ( | type(c_ptr) | handle, |
| integer(kind(rocblas_fill_upper)) | uplo, | ||
| integer(c_int) | n, | ||
| complex(c_double_complex) | alpha, | ||
| complex(c_double_complex), dimension(:), target | x, | ||
| integer(c_int) | incx, | ||
| complex(c_double_complex), dimension(:), target | y, | ||
| integer(c_int) | incy, | ||
| type(c_ptr) | AP | ||
| ) |
The documentation for this interface was generated from the following file: