LAPACK  3.4.2 LAPACK: Linear Algebra PACKage
cheswapr.f File Reference

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## Functions/Subroutines

subroutine cheswapr (UPLO, N, A, LDA, I1, I2)
CHESWAPR applies an elementary permutation on the rows and columns of a Hermitian matrix.

## 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.

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Purpose:
``` CHESWAPR applies an elementary permutation on the rows and the columns of
a hermitian matrix.```
Parameters:
 [in] 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.``` [in] N ``` N is INTEGER The order of the matrix A. N >= 0.``` [in,out] 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.``` [in] LDA ``` LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).``` [in] I1 ``` I1 is INTEGER Index of the first row to swap``` [in] I2 ``` I2 is INTEGER Index of the second row to swap```
Date:
September 2012

Definition at line 103 of file cheswapr.f.

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