slapmr.f (3) - Linux Manuals

NAME

slapmr.f -

SYNOPSIS

Functions/Subroutines

subroutine slapmr (FORWRD, M, N, X, LDX, K)
SLAPMR rearranges rows of a matrix as specified by a permutation vector.

Function/Subroutine Documentation

subroutine slapmr (logicalFORWRD, integerM, integerN, real, dimension( ldx, * )X, integerLDX, integer, dimension( * )K)

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

Purpose:

 SLAPMR 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:

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 REAL 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 (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.

Date:

September 2012

Definition at line 105 of file slapmr.f.

Author

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