ZLAPMT (3lapack)

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 ZLAPMT( FORWRD, M, N, X, LDX, K )

      LOGICAL        FORWRD

      INTEGER        LDX, M, N

      INTEGER        K( * )

      COMPLEX*16     X( LDX, * )

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.

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*16 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.