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diff --git a/src/slalib/dvxv.f b/src/slalib/dvxv.f
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+      SUBROUTINE sla_DVXV (VA, VB, VC)
+*+
+*     - - - - -
+*      D V X V
+*     - - - - -
+*
+*  Vector product of two 3-vectors  (double precision)
+*
+*  Given:
+*      VA      dp(3)     first vector
+*      VB      dp(3)     second vector
+*
+*  Returned:
+*      VC      dp(3)     vector result
+*
+*  P.T.Wallace   Starlink   March 1986
+*
+*  Copyright (C) 1995 Rutherford Appleton Laboratory
+*-
+
+      IMPLICIT NONE
+
+      DOUBLE PRECISION VA(3),VB(3),VC(3)
+
+      DOUBLE PRECISION VW(3)
+      INTEGER I
+
+
+*  Form the vector product VA cross VB
+      VW(1)=VA(2)*VB(3)-VA(3)*VB(2)
+      VW(2)=VA(3)*VB(1)-VA(1)*VB(3)
+      VW(3)=VA(1)*VB(2)-VA(2)*VB(1)
+
+*  Return the result
+      DO I=1,3
+         VC(I)=VW(I)
+      END DO
+
+      END