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*DECK ERRABS
SUBROUTINE ERRABS(IPMAC,NREG2,NREG,NGRP,XABS)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Recover absorption cross sections from the macrolib.
*
*Copyright:
* Copyright (C) 2016 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
* IPMAC pointer to the macrolib.
* NREG2 number of regions in the absorption array.
* NREG number of regions in the macrolib.
* NGRP number of energy groups in the macrolib.
* XABS absorption cross sections.
*
*-----------------------------------------------------------------------
*
USE GANLIB
*----
* SUBROUTINE ARGUMENTS
*----
TYPE(C_PTR) IPMAC
INTEGER NREG2,NREG,NGRP
REAL XABS(NREG,NGRP)
*----
* LOCAL VARIABLES
*----
TYPE(C_PTR) JPMAC,KPMAC
INTEGER, DIMENSION(:), ALLOCATABLE :: NJJ,IJJ,IPOS
REAL, DIMENSION(:), ALLOCATABLE :: TOTAL,XSIGS,XSCAT
*----
* SCRATCH STORAGE ALLOCATION
*----
ALLOCATE(NJJ(NREG),IJJ(NREG),IPOS(NREG))
ALLOCATE(TOTAL(NREG),XSIGS(NREG),XSCAT(NREG*NGRP))
*
XABS(:NREG,:NGRP)=0.0
JPMAC=LCMGID(IPMAC,'GROUP')
DO IGR=1,NGRP
KPMAC=LCMGIL(JPMAC,IGR)
CALL LCMGET(KPMAC,'NTOT0',TOTAL)
CALL LCMLEN(KPMAC,'SIGS00',ILONG,ITYLCM)
IF(ILONG.NE.0) THEN
CALL LCMGET(KPMAC,'SIGS00',XSIGS)
DO I=1,NREG2
XABS(I,IGR)=XABS(I,IGR)+TOTAL(I)-XSIGS(I)
ENDDO
ELSE
CALL LCMGET(KPMAC,'NJJS00',NJJ)
CALL LCMGET(KPMAC,'IJJS00',IJJ)
CALL LCMGET(KPMAC,'IPOS00',IPOS)
CALL LCMGET(KPMAC,'SCAT00',XSCAT)
DO I=1,NREG2
XABS(I,IGR)=XABS(I,IGR)+TOTAL(I)
IPO=IPOS(I)
J2=IJJ(I)
J1=IJJ(I)-NJJ(I)+1
DO JGR=J2,J1,-1
XABS(I,JGR)=XABS(I,JGR)-XSCAT(IPO)
IPO=IPO+1
ENDDO
ENDDO
ENDIF
ENDDO
*----
* SCRATCH STORAGE DEALLOCATION
*----
DEALLOCATE(XSCAT,XSIGS,TOTAL)
DEALLOCATE(IPOS,IJJ,NJJ)
RETURN
END
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