      SUBROUTINE DSCAL( N, SA, SX, INCX )
****************************************************************************
*                                                                          *
*   DATA PARALLEL BLAS based on MPL                                        *
*                                                                          *
*   Version 1.0   1/9-92 ,                                                 *
*   For MasPar MP-1 computers                                              *
*                                                                          *
*   para//ab, University of Bergen, NORWAY                                 *
*                                                                          *
*   These programs must be called using F90 style array syntax.            *
*   Note that the F77 style calling sequence has been retained             *
*   in this version for compatibility reasons, be aware that               *
*   parameters related to the array dimensions and shape therefore may     *
*   be redundant and without any influence.                                *
*   The calling sequence may be changed in a future version.               *
*   Please report any BUGs, ideas for improvement or other                 *
*   comments to                                                            *
*                    adm@parallab.uib.no                                   *
*                                                                          *
*   Future versions may then reflect your suggestions.                     *
*   The most current version of this software is available                 *
*   from netlib@nac.no , send the message `send index from maspar'         *
*                                                                          *
*   REVISIONS:                                                             *
*                                                                          *
****************************************************************************
      implicit none
*
*     scales a vector by a constant.
*     uses unrolled loops for increment equal to 1.
*     jack dongarra, linpack, 3/11/78.
*
*     .. Scalar Arguments ..
      INTEGER           INCX, N
      DOUBLE PRECISION  SA
*     ..
*     .. Array Arguments ..
      double precision, array(:) :: SX
*     ..
*     .. Local Scalars ..
      INTEGER           IX, jx
*     ..
*     .. Intrinsic Functions ..
      INTRINSIC         ABS
*     ..
*     .. Executable Statements ..
*
      IF( N.LE.0 ) return
*
      ix = abs(incx)
      IF( iX.EQ.1 ) then
*
*        code for increment equal to 1
*
        sx(1:n) = sa * sx(1:n)
      else
*
*        code for increment not equal to 1
*
        jx = ix * ( n-1 ) + 1
        sx(1:jx:ix) = sa * sx(1:jx:ix)
      endif
*
      RETURN
*
*     End of DSCAL .
*
      END