ssyswapr.f man page

ssyswapr.f —

Synopsis

Functions/Subroutines

subroutine ssyswapr (UPLO, N, A, LDA, I1, I2)
SSYSWAPR applies an elementary permutation on the rows and columns of a symmetric matrix.

Function/Subroutine Documentation

subroutine ssyswapr (characterUPLO, integerN, real, dimension( lda, n )A, integerLDA, integerI1, integerI2)

SSYSWAPR applies an elementary permutation on the rows and columns of a symmetric matrix.  

Purpose:

 SSYSWAPR applies an elementary permutation on the rows and the columns of
 a symmetric 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 REAL 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 SSYTRF.

          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 ssyswapr.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

ssyswapr(3) is an alias of ssyswapr.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK