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*DECK FLDTSM
SUBROUTINE FLDTSM(NAMP,IPTRK,IPSYS,LL4,NBMIX,NAN,F2,F3)
*
*-----------------------------------------------------------------------
*
*Purpose:
* LCM driver for the multiplication of a matrix by a vector.
* Special version for the simplified PN method in TRIVAC.
*
*Copyright:
* Copyright (C) 2005 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): A. Hebert
*
*Parameters: input
* NAMP name of the coefficient matrix.
* IPTRK L_TRACK pointer to the tracking information.
* IPSYS L_SYSTEM pointer to system matrices.
* LL4 order of the matrix.
* NBMIX total number of material mixtures in the macrolib.
* NAN number of Legendre orders in the cross sections.
* F2 vector to multiply.
*
*Parameters: output
* F3 result of the multiplication.
*
*-----------------------------------------------------------------------
*
USE GANLIB
*----
* SUBROUTINE ARGUMENTS
*----
TYPE(C_PTR) IPTRK,IPSYS
CHARACTER NAMP*(*)
INTEGER LL4,NBMIX,NAN
REAL F2(LL4),F3(LL4)
*----
* LOCAL VARIABLES
*----
PARAMETER (NSTATE=40)
CHARACTER NAMT*12,TEXT12*12
INTEGER IPAR(NSTATE)
LOGICAL CHEX
INTEGER, DIMENSION(:), ALLOCATABLE :: MAT,KN,IQFR
REAL, DIMENSION(:), ALLOCATABLE :: VOL,QFR,XX,YY,ZZ,GAMMA
REAL, DIMENSION(:,:), ALLOCATABLE :: R,V,SGD
INTEGER, DIMENSION(:), POINTER :: IPERT
REAL, DIMENSION(:), POINTER :: FRZ
DOUBLE PRECISION, DIMENSION(:), POINTER :: CTRAN
TYPE(C_PTR) IPERT_PTR,FRZ_PTR,CTRAN_PTR
*----
* SCRATCH STORAGE ALLOCATION
*----
ALLOCATE(SGD(NBMIX,2*NAN))
*----
* RECOVER PN SPECIFIC PARAMETERS.
*----
NAMT=NAMP
READ(NAMT,'(1X,2I3)') IGR,JGR
CALL LCMGET(IPTRK,'STATE-VECTOR',IPAR)
NREG=IPAR(1)
NUN=IPAR(2)
ITYPE=IPAR(6)
IELEM=IPAR(9)
ICOL=IPAR(10)
L4=IPAR(11)
ISPLH=IPAR(13)
LX=IPAR(14)
LZ=IPAR(16)
LL4F=IPAR(25)
LL4W=IPAR(26)
LL4X=IPAR(27)
LL4Y=IPAR(28)
NLF=IPAR(30)
NVD=IPAR(34)
CHEX=(ITYPE.EQ.8).OR.(ITYPE.EQ.9)
IF(CHEX) THEN
IF(NUN.GT.(LX*LZ+L4)*NLF/2) CALL XABORT('FLDTSM: INVALID NUN '
1 //'OR L4.')
ELSE
IF(NUN.NE.L4*NLF/2) CALL XABORT('FLDTSM: INVALID NUN OR L4.')
ENDIF
IF(L4*NLF/2.NE.LL4) CALL XABORT('FLDTSM: INVALID L4 OR LL4.')
*----
* RECOVER TRACKING INFORMATION.
*----
ALLOCATE(MAT(NREG),VOL(NREG))
CALL LCMGET(IPTRK,'MATCOD',MAT)
CALL LCMGET(IPTRK,'VOLUME',VOL)
CALL LCMLEN(IPTRK,'KN',MAXKN,ITYLCM)
CALL LCMLEN(IPTRK,'QFR',MAXQF,ITYLCM)
ALLOCATE(KN(MAXKN),QFR(MAXQF),IQFR(MAXQF))
CALL LCMGET(IPTRK,'KN',KN)
CALL LCMGET(IPTRK,'QFR',QFR)
CALL LCMGET(IPTRK,'IQFR',IQFR)
IF(CHEX) THEN
CALL LCMGET(IPTRK,'SIDE',SIDE)
ELSE
ALLOCATE(XX(NREG),YY(NREG))
CALL LCMGET(IPTRK,'XX',XX)
CALL LCMGET(IPTRK,'YY',YY)
ENDIF
ALLOCATE(ZZ(NREG))
CALL LCMGET(IPTRK,'ZZ',ZZ)
*----
* RECOVER THE PERTURBATION FLAG.
*----
CALL LCMGET(IPSYS,'STATE-VECTOR',IPAR)
IPR=IPAR(9)
*----
* PROCESS PHYSICAL ALBEDO FUNCTIONS
*----
TEXT12='ALBEDO-FU'//NAMT(2:4)
CALL LCMLEN(IPSYS,TEXT12,NALBP,ITYLCM)
IF(NALBP.GT.0) THEN
ALLOCATE(GAMMA(NALBP))
CALL LCMGET(IPSYS,TEXT12,GAMMA)
DO IQW=1,MAXQF
IALB=IQFR(IQW)
IF(IALB.NE.0) QFR(IQW)=QFR(IQW)*GAMMA(IALB)
ENDDO
DEALLOCATE(GAMMA)
ENDIF
*----
* RECOVER THE CROSS SECTIONS.
*----
DO 20 IL=1,NAN
WRITE(TEXT12,'(4HSCAR,I2.2,A6)') IL-1,NAMT(2:7)
CALL LCMLEN(IPSYS,TEXT12,LENGT,ITYLCM)
IF(LENGT.EQ.0) THEN
SGD(:NBMIX,IL)=0.0
SGD(:NBMIX,NAN+IL)=0.0
ELSE
CALL LCMGET(IPSYS,TEXT12,SGD(1,IL))
WRITE(TEXT12,'(4HSCAI,I2.2,A6)') IL-1,NAMT(2:7)
CALL LCMGET(IPSYS,TEXT12,SGD(1,NAN+IL))
ENDIF
20 CONTINUE
*----
* RECOVER THE FINITE ELEMENT UNIT STIFFNESS MATRIX.
*----
CALL LCMSIX(IPTRK,'BIVCOL',1)
CALL LCMLEN(IPTRK,'T',LC,ITYLCM)
ALLOCATE(R(LC,LC),V(LC,LC-1))
CALL LCMGET(IPTRK,'R',R)
CALL LCMGET(IPTRK,'V',V)
CALL LCMSIX(IPTRK,' ',2)
*----
* COMPUTE THE SOURCE
*----
ITY=0
IF(IGR.NE.JGR) ITY=1
IF(CHEX) THEN
NBLOS=LX*LZ/3
CALL LCMGPD(IPTRK,'CTRAN',CTRAN_PTR)
CALL LCMGPD(IPTRK,'IPERT',IPERT_PTR)
CALL LCMGPD(IPTRK,'FRZ',FRZ_PTR)
CALL C_F_POINTER(CTRAN_PTR,CTRAN,(/ ((IELEM+1)*IELEM)**2 /))
CALL C_F_POINTER(IPERT_PTR,IPERT,(/ NBLOS /))
CALL C_F_POINTER(FRZ_PTR,FRZ,(/ NBLOS /))
CALL PNSH3D(ITY,IPR,NBMIX,NBLOS,IELEM,ICOL,NLF,NVD,NAN,L4,LL4F,
1 LL4W,LL4X,LL4Y,MAT,SGD(1,1),SGD(1,NAN+1),SIDE,ZZ,FRZ,QFR,IPERT,
2 KN,LC,R,V,CTRAN,F2,F3)
ELSE
CALL PNSZ3D(ITY,IPR,NREG,IELEM,ICOL,XX,YY,ZZ,MAT,VOL,NBMIX,NLF,
1 NVD,NAN,SGD(1,1),SGD(1,NAN+1),L4,KN,QFR,LC,R,V,F2,F3)
ENDIF
IF(ITY.EQ.1) THEN
DO 30 I=1,LL4
F3(I)=-F3(I)
30 CONTINUE
ENDIF
DEALLOCATE(V,R,ZZ)
IF(.NOT.CHEX) DEALLOCATE(YY,XX)
DEALLOCATE(IQFR,QFR,KN,VOL,MAT)
*----
* SCRATCH STORAGE DEALLOCATION
*----
DEALLOCATE(SGD)
RETURN
END
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