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*DECK KELSYM
FUNCTION KELSYM( IPRT, NDIM, MAXDO, NSURO, NVOLO,
> IDLGEO, INDEXO, MATGEO, KEYSYM )
*
*-----------------------------------------------------------------------
*
*Purpose:
* Generate the vector KEYSYM for a block.
*
*Copyright:
* Copyright (C) 1990 Ecole Polytechnique de Montreal
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version
*
*Author(s): R. Roy
*
*Parameters: input
* IPRT intermediate printing level.
* NDIM number of dimensions (2 or 3).
* MAXDO max index values for all axes (rect/cyl).
* NSURO number of surfaces for a specific geometry.
* NVOLO number of zones for a specific geometry.
* IDLGEO specific position for a geometry.
* INDEXO coordinates for zones & surfaces of a cell.
* MATGEO material numbers corresponding to geometries.
*
*Parameters: output
* KEYSYM symmetry numbers corresponding to geometries.
* KELSYM number of surfaces and zones renumbered.
*
*-----------------------------------------------------------------------
*
IMPLICIT NONE
*
INTEGER KELSYM, IPRT, NDIM, NSURO, NVOLO, IDLGEO
INTEGER MAXDO(*),INDEXO(4,*),KEYSYM(*),MATGEO(*)
*
INTEGER ICUR(4), I, J, IVS, MAXPRC, MAXSUI, ISYM, IND
LOGICAL SWITCH
INTEGER IOUT
PARAMETER ( IOUT=6 )
*
IND(I)= IDLGEO + I
*
DO 5 IVS= 0, NVOLO
KEYSYM(IND(IVS))= 0
5 CONTINUE
KELSYM= 0
*
* LOCATES THE SYMMETRIC SURFACE TO EACH SURFACE
DO 50 IVS = NSURO, -1
IF( MATGEO(IND(IVS)).EQ.0 )GO TO 51
MAXPRC= 0
DO 10 J = 1, 4
ICUR(J)= INDEXO(J,IND(IVS))
*
* FIND THE SYMMETRIC SURFACE BY CHANGING END-FACE
IF( J.LE.NDIM )THEN
MAXSUI= MAXDO(J)
IF( ICUR(J).EQ.MAXPRC)THEN
ICUR(J)= MAXSUI
ELSEIF( ICUR(J).EQ.MAXSUI)THEN
ICUR(J)= MAXPRC
ENDIF
MAXPRC= MAXSUI
ENDIF
*
* THE SENTINEL VALUE IS IVS=0
INDEXO(J,IND(0))= ICUR(J)
10 CONTINUE
ISYM= NSURO
20 SWITCH= .TRUE.
DO 30 J = 1, 4
SWITCH= SWITCH .AND. ICUR(J).EQ.INDEXO(J,IND(ISYM))
30 CONTINUE
IF( SWITCH )GO TO 40
ISYM= ISYM + 1
GO TO 20
40 KEYSYM(IND(IVS))= ISYM
IF( IPRT.GE.10 )THEN
WRITE(IOUT,'(22H SURFACE SYMMETRIC TO ,I6,4H IS ,I6)')
> -IVS, -ISYM
ENDIF
IF( ISYM.NE.0 ) KELSYM=KELSYM-1
51 CONTINUE
50 CONTINUE
*
* RESET SENTINEL INDEXO(J,IND(0)) FOR SUBSEQUENT USES
DO 60 J= 1, 4
INDEXO(J,IND(0))= 0
60 CONTINUE
*
RETURN
END
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