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## zlapmr()

subroutine zlapmr | ( | logical | forwrd,
|  | integer | m,
|  | integer | n,
|  | complex*16, dimension( ldx, * ) | x,
|  | integer | ldx,
|  | integer, dimension( * ) | k )

ZLAPMR rearranges rows of a matrix as specified by a permutation vector.

Download ZLAPMR + dependencies [TGZ] [ZIP] [TXT]

Purpose:

      !>
      !> ZLAPMR rearranges the rows of the M by N matrix X as specified
      !> by the permutation K(1),K(2),...,K(M) of the integers 1,...,M.
      !> If FORWRD = .TRUE.,  forward permutation:
      !>
      !>      X(K(I),*) is moved X(I,*) for I = 1,2,...,M.
      !>
      !> If FORWRD = .FALSE., backward permutation:
      !>
      !>      X(I,*) is moved to X(K(I),*) for I = 1,2,...,M.
      !>

Parameters

  [in]

  FORWRD

      !>          FORWRD is LOGICAL
      !>          = .TRUE., forward permutation
      !>          = .FALSE., backward permutation
      !>

  [in]

  M

      !>          M is INTEGER
      !>          The number of rows of the matrix X. M >= 0.
      !>

  [in]

  N

      !>          N is INTEGER
      !>          The number of columns of the matrix X. N >= 0.
      !>

  [in,out]

  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.
      !>

  [in]

  LDX

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

  [in,out]

  K

      !>          K is INTEGER array, dimension (M)
      !>          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.