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 zheswapr.f(3) LAPACK zheswapr.f(3)

zheswapr.f -

# SYNOPSIS

## Functions/Subroutines

subroutine zheswapr (UPLO, N, A, LDA, I1, I2)

ZHESWAPR applies an elementary permutation on the rows and columns of a Hermitian matrix.

# Function/Subroutine Documentation

## subroutine zheswapr (characterUPLO, integerN, complex*16, dimension( lda, n )A, integerLDA, integerI1, integerI2)

ZHESWAPR applies an elementary permutation on the rows and columns of a Hermitian matrix.
Purpose:
``` ZHESWAPR 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*16 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
NAG Ltd.
Date:
September 2012
Definition at line 103 of file zheswapr.f.

# Author

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