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*DECK MCGSIG
SUBROUTINE MCGSIG(IPTRK,NMAT,NGEFF,NALBP,KPSYS,SIGAL,LVOID)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Construct total cross sections and albedos array and check for void.
*
*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
* IPTRK pointer to the tracking (L_TRACK signature).
* NMAT number of mixtures.
* NGEFF effective number of energy groups.
* NALBP number of physical albedos.
* KPSYS pointer array for each group properties.
*
*Parameters: output
* SIGAL total cross sections and albedos array.
* LVOID void flag.
*
*-----------------------------------------------------------------------
*
USE GANLIB
IMPLICIT NONE
*---
* SUBROUTINES ARGUMENTS
*---
TYPE(C_PTR) IPTRK,KPSYS(NGEFF)
INTEGER NMAT,NGEFF,NALBP
REAL SIGAL(-6:NMAT,NGEFF)
LOGICAL LVOID
*---
* LOCAL VARIABLES
*---
TYPE(C_PTR) JPSYS
INTEGER I,II,ISA,ICODE(6)
REAL ALBG(6),ALBEDO(6)
REAL, ALLOCATABLE, DIMENSION(:) :: ALBP
*---
* RECOVER ALBEDO INFORMATION FROM TRACKING
*---
CALL LCMGET(IPTRK,'ICODE',ICODE)
CALL LCMGET(IPTRK,'ALBEDO',ALBG)
*
LVOID=.FALSE.
ALLOCATE(ALBP(NALBP))
DO II=1,NGEFF
JPSYS=KPSYS(II)
DO ISA=1,6
ALBEDO(ISA)=ALBG(ISA)
ENDDO
IF(NALBP .GT. 0) THEN
CALL LCMGET(JPSYS,'ALBEDO',ALBP)
DO ISA=1,6
IF(ICODE(ISA).GT.0) ALBEDO(ISA)=ALBP(ICODE(ISA))
ENDDO
ENDIF
CALL LCMGET(JPSYS,'DRAGON-TXSC',SIGAL(0,II))
DO I=1,NMAT
IF (SIGAL(I,II).EQ.0.0) LVOID=.TRUE.
ENDDO
DO ISA=-6,-1
SIGAL(ISA,II)=ALBEDO(-ISA)
ENDDO
ENDDO
DEALLOCATE(ALBP)
*
RETURN
END
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