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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
*
* License:
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see SLA_CONDITIONS); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
*-
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
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