rocsolver_cungtr Interface Reference#
hipfort_rocsolver::rocsolver_cungtr Interface Reference
! More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocsolver_cungtr_full_rank (handle, uplo, n, A, lda, ipiv) |
| integer(kind(rocblas_status_success)) function | rocsolver_cungtr_orig (handle, uplo, n, A, lda, ipiv) |
| integer(kind(rocblas_status_success)) function | rocsolver_cungtr_rank_0 (handle, uplo, n, A, lda, ipiv) |
| integer(kind(rocblas_status_success)) function | rocsolver_cungtr_rank_1 (handle, uplo, n, A, lda, ipiv) |
Detailed Description
!
UNGTR generates a n-by-n unitary Matrix Q.
Q is defined as the product of n-1 Householder reflectors of order n. If uplo indicates upper, then Q has the form
Q = H(n-1) H(n-2) ... H(1)
On the other hand, if uplo indicates lower, then Q has the form
Q = H(1) H(2) ... H(n-1)
The Householder matrices H(i) are never stored, they are computed from its corresponding Householder vectors v(i) and scalars ipiv_i as returned by HETRD in its arguments A and tau.
- Parameters
-
[in] handle rocblas_handle. [in] uplo rocblas_fill.
Specifies whether the HETRD factorization was upper or lower triangular. If uplo indicates lower (or upper), then the upper (or lower) part of A is not used.[in] n rocblas_int. n >= 0.
The number of rows and columns of the matrix Q.[in,out] A pointer to type. Array on the GPU of dimension ldan.
On entry, the (i+1)-th column (if uplo indicates upper) or i-th column (if uplo indicates lower) has the Householder vector v(i) as returned by HETRD. On exit, the computed matrix Q.[in] lda rocblas_int. lda >= m.
Specifies the leading dimension of A.[in] ipiv pointer to type. Array on the GPU of dimension n-1.
The scalar factors of the Householder matrices H(i) as returned by HETRD.
Member Function/Subroutine Documentation
◆ rocsolver_cungtr_full_rank()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungtr::rocsolver_cungtr_full_rank | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| complex(c_float_complex), dimension(:,:), target | A, | ||
| integer(c_int), value | lda, | ||
| complex(c_float_complex), dimension(:), target | ipiv | ||
| ) |
◆ rocsolver_cungtr_orig()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungtr::rocsolver_cungtr_orig | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| type(c_ptr), value | A, | ||
| integer(c_int), value | lda, | ||
| type(c_ptr), value | ipiv | ||
| ) |
◆ rocsolver_cungtr_rank_0()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungtr::rocsolver_cungtr_rank_0 | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| complex(c_float_complex), target | A, | ||
| integer(c_int), value | lda, | ||
| complex(c_float_complex), target | ipiv | ||
| ) |
◆ rocsolver_cungtr_rank_1()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungtr::rocsolver_cungtr_rank_1 | ( | type(c_ptr), value | handle, |
| integer(kind(rocblas_fill_upper)), value | uplo, | ||
| integer(c_int), value | n, | ||
| complex(c_float_complex), dimension(:), target | A, | ||
| integer(c_int), value | lda, | ||
| complex(c_float_complex), dimension(:), target | ipiv | ||
| ) |
The documentation for this interface was generated from the following file: