clapmt.f man page

clapmt.f

Synopsis

Functions/Subroutines

subroutine clapmt (FORWRD, M, N, X, LDX, K)
CLAPMT performs a forward or backward permutation of the columns of a matrix.

Function/Subroutine Documentation

subroutine clapmt (logical FORWRD, integer M, integer N, complex, dimension( ldx, * ) X, integer LDX, integer, dimension( * ) K)

CLAPMT performs a forward or backward permutation of the columns of a matrix.  

Purpose:

 CLAPMT 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 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 clapmt.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

The man page clapmt(3) is an alias of clapmt.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK