cheswapr.f (3) - Linux Man Pages

NAME

cheswapr.f -

SYNOPSIS


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 (characterUPLO, integerN, complex, dimension( lda, n )A, integerLDA, integerI1, integerI2)

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.

Date:

September 2012

Definition at line 103 of file cheswapr.f.

Author

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