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*DECK MCGFMC
SUBROUTINE MCGFMC(KPN,K,NREG,M,NANI,NFUNL,NZON,KEYFLX,KEYCUR,
1 PHIOUT,V,S,ST,KEYANI)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Addition of the regional source to the flux when the 'MOCC/MCI'
* integration strategy is turned on for the method of characteristics
* integration.
*
*Copyright:
* Copyright (C) 2002 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. Le Tellier
*
*Parameters: input
* KPN total number of unknowns per group in flux vector.
* K total number of volumes for which specific values
* of the neutron flux and reactions rates are required.
* NREG number of volumes.
* M number of material mixtures.
* NANI scattering anisotropy (=1 for isotropic scattering).
* NFUNL number of moments of the flux (in 2D : NFUNL=NANI*(NANI+1)/2).
* NZON index-number of the mixture type assigned to each volume.
* KEYFLX position of flux elements in flux vector.
* KEYCUR position of current elements in flux vector.
* V volumes.
* S source vector.
* ST total cross sections array.
* KEYANI 'mode to l' index: l=KEYANI(nu).
*
*Parameters: input/output
* PHIOUT flux vector.
*
*-----------------------------------------------------------------------
*
IMPLICIT NONE
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER KPN,K,NREG,M,NANI,NFUNL,NZON(K),KEYFLX(NREG,NFUNL),
1 KEYCUR(K-NREG),KEYANI(NFUNL)
REAL V(K),ST(0:M)
DOUBLE PRECISION PHIOUT(KPN),S(KPN)
*----
* LOCAL VARIABLES
*----
INTEGER I,IBM,IL,IND
*
IF(NANI.LE.0) CALL XABORT('MCGFMC: INVALID VALUE OF NANI.')
DO I=1,K
IF(V(I).GT.0.) THEN
IBM=NZON(I)
IF (IBM.LT.0) THEN
IND=KEYCUR(I-NREG)
PHIOUT(IND)=PHIOUT(IND)/DBLE(V(I))
ELSE
DO IL=1,NFUNL
IND=KEYFLX(I,IL)
PHIOUT(IND)=PHIOUT(IND)/DBLE(V(I)*ST(IBM))
1 +S(IND)/DBLE(2*KEYANI(IL)+1)
ENDDO
ENDIF
ENDIF
ENDDO
*
RETURN
END
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