SRC/zlapmt.f(3) | Library Functions Manual | SRC/zlapmt.f(3) |
NAME
SRC/zlapmt.f
SYNOPSIS
Functions/Subroutines
subroutine zlapmt (forwrd, m, n, x, ldx, k)
ZLAPMT performs a forward or backward permutation of the columns of a
matrix.
Function/Subroutine Documentation
subroutine zlapmt (logical forwrd, integer m, integer n, complex*16, dimension( ldx, * ) x, integer ldx, integer, dimension( * ) k)
ZLAPMT performs a forward or backward permutation of the columns of a matrix.
Purpose:
ZLAPMT rearranges the columns of the M by N matrix X as specified by the permutation K(1),K(2),...,K(N) of the integers 1,...,N. If FORWRD = .TRUE., forward permutation: X(*,K(J)) is moved X(*,J) for J = 1,2,...,N. If FORWRD = .FALSE., backward permutation: X(*,J) is moved to X(*,K(J)) for J = 1,2,...,N.
Parameters
FORWRD
FORWRD is LOGICAL = .TRUE., forward permutation = .FALSE., backward permutation
M
M is INTEGER The number of rows of the matrix X. M >= 0.
N
N is INTEGER The number of columns of the matrix X. N >= 0.
X
X is COMPLEX*16 array, dimension (LDX,N) On entry, the M by N matrix X. On exit, X contains the permuted matrix X.
LDX
LDX is INTEGER The leading dimension of the array X, LDX >= MAX(1,M).
K
K is INTEGER array, dimension (N) On entry, K contains the permutation vector. K is used as internal workspace, but reset to its original value on output.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 103 of file zlapmt.f.
Author
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