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      REAL FUNCTION slVDV (VA, VB)

     - - - -
      V D V
     - - - -

  Scalar product of two 3-vectors  (single precision)

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

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

  P.T.Wallace   Starlink   November 1984

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

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