cheswapr.f3
Function/Subroutine Documentation
subroutine cheswapr (character uplo, integer n, complex, dimension( lda, n ) a, integer lda, integer i1, integer i2)
CHESWAPR applies an elementary permutation on the rows and columns of a Hermitian matrix.
Purpose:
!> !> CHESWAPR applies an elementary permutation on the rows and the columns of !> a hermitian matrix. !>
Parameters
UPLO
!> UPLO is CHARACTER*1 !> Specifies whether the details of the factorization are stored !> as an upper or lower triangular matrix. !> = 'U': Upper triangular, form is A = U*D*U**T; !> = 'L': Lower triangular, form is A = L*D*L**T. !>
N
!> N is INTEGER !> The order of the matrix A. N >= 0. !>
A
!> A is COMPLEX array, dimension (LDA,N) !> On entry, the NB diagonal matrix D and the multipliers !> used to obtain the factor U or L as computed by CSYTRF. !> !> On exit, if INFO = 0, the (symmetric) inverse of the original !> matrix. If UPLO = 'U', the upper triangular part of the !> inverse is formed and the part of A below the diagonal is not !> referenced; if UPLO = 'L' the lower triangular part of the !> inverse is formed and the part of A above the diagonal is !> not referenced. !>
LDA
!> LDA is INTEGER !> The leading dimension of the array A. LDA >= max(1,N). !>
I1
!> I1 is INTEGER !> Index of the first row to swap !>
I2
!> I2 is INTEGER !> Index of the second row to swap !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 101 of file cheswapr.f.
History
- Arch Linux 2026-11-01: the text shown here
- Debian 9 (Stretch)
- Debian 8 (Jessie)
- Debian 7 (Wheezy)