dsyswapr.f(3) LAPACK dsyswapr.f(3)
subroutine dsyswapr (UPLO, N, A, LDA, I1, I2)
DSYSWAPR applies an elementary permutation on the rows and columns of a symmetric
subroutine dsyswapr (characterUPLO, integerN, double precision, dimension( lda, n )A,
integerLDA, integerI1, integerI2)
DSYSWAPR applies an elementary permutation on the rows and columns of a symmetric matrix.
DSYSWAPR applies an elementary permutation on the rows and the columns of
a symmetric matrix.
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 is INTEGER
The order of the matrix A. N >= 0.
A is DOUBLE PRECISION 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 DSYTRF.
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
LDA is INTEGER
The leading dimension of the array A. LDA >= max(1,N).
I1 is INTEGER
Index of the first row to swap
I2 is INTEGER
Index of the second row to swap
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
Definition at line 103 of file dsyswapr.f.
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 dsyswapr.f(3)