clapmt(3F)

NAME
     CLAPMT - rearrange 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

SYNOPSIS
     SUBROUTINE CLAPMT( FORWRD, M, N, X, LDX, K )

         LOGICAL        FORWRD

         INTEGER        LDX, M, N

         INTEGER        K( * )

         COMPLEX        X( LDX, * )

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.


ARGUMENTS
     FORWRD  (input) LOGICAL
             = .TRUE., forward permutation = .FALSE., backward permutation

     M       (input) INTEGER
             The number of rows of the matrix X. M >= 0.

     N       (input) INTEGER
             The number of columns of the matrix X. N >= 0.

     X       (input/output) COMPLEX array, dimension (LDX,N)
             On entry, the M by N matrix X.  On exit, X contains the permuted
             matrix X.

     LDX     (input) INTEGER
             The leading dimension of the array X, LDX >= MAX(1,M).

     K       (input) INTEGER array, dimension (N)
             On entry, K contains the permutation vector.