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.help dvdv Jun99 "Slalib Package"
.nf

      DOUBLE PRECISION FUNCTION slDVDV (VA, VB)

     - - - - -
      D V D V
     - - - - -

  Scalar product of two 3-vectors  (double precision)

  Given:
      VA      dp(3)     first vector
      VB      dp(3)     second vector

  The result is the scalar product VA.VB (double precision)

  P.T.Wallace   Starlink   November 1984

  Copyright (C) 1995 Rutherford Appleton Laboratory
  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.

.fi
.endhelp