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.

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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

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

September 2012

Definition at line 103 of file cheswapr.f.

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