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zlapmt.f(3) LAPACK zlapmt.f(3)

NAME

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.

Date:

December 2016

Definition at line 106 of file zlapmt.f.

Author

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Tue Nov 14 2017 Version 3.8.0