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!Environment Canada - Atmospheric Science and Technology License/Disclaimer,
!                     version 3; Last Modified: May 7, 2008.
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      SUBROUTINE DOTOBS(KN,Px,Py,PSCP) 2
      IMPLICIT NONE
#if defined (DOC) 
*
***s/r DOTOBS -Compute a scalar product in double precision
*
*Authors    . P. KOCLAS .P. GAUTHIER (CMC-ARMA ) April 1996
*
#endif
*
      INTEGER KN
      REAL*8 Px(KN), Py(KN), PSCP
C
      REAL*8 DLSUM
      INTEGER I
C
      DLSUM = 0.D0
      DO I=1,KN
         DLSUM =DLSUM + DBLE(Px(I)) * DBLE(Py(I))
      END DO
C==================
      PSCP= DLSUM
C==================
      RETURN 
      END