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*DECK ACRRGR
      SUBROUTINE ACRRGR(IPAPX,IPMAP,LCUBIC,NMIX,IMPX,NMIL,NCAL,MD2,
     1 NCH,NB,NFUEL,NPARM,NPAR,ITER,MAXNIS,MIXC,TERP,NISO,LISO,HISO,
     2 CONC,ITODO,LFROM)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Compute TERP factors for Apex file interpolation. Use global
* parameters from a fuel-map object and optional user-defined values.
*
*Copyright:
* Copyright (C) 2021 Ecole Polytechnique de Montreal
*
*Author(s): 
* A. Hebert
*
*Parameters: input
* IPAPX   address of the Apex file.
* IPMAP   address of the fuel-map object.
* LCUBIC  =.TRUE.: cubic Ceschino interpolation; =.FALSE: linear
*         Lagrange interpolation.
* NMIX    number of material mixtures in the fuel-map macrolib.
* IMPX    print parameter (equal to zero for no print).
* NMIL    number of material mixtures in the Apex file.
* NCAL    number of elementary calculations in the Apex file.
* MD2     number of particularized and macro isotopes in the Apex file.
* NCH     number of reactor channels.
* NB      number of fuel bundles per channel.
* NFUEL   number of fuel types.
* NPARM   number of additional parameters (other than burnup) defined
*         in FMAP object
* NPAR    number of parameters
*
*Parameters: output
* ITER    completion flag (=0: all over; =1: use another Apex file;
*         =2 use another L_MAP + Apex file).
* MAXNIS  maximum value of NISO(I) in user data.
* MIXC    mixture index in the Apex file corresponding to each microlib
*         mixture.
* TERP    interpolation factors.
* NISO    number of user-selected isotopes.
* LISO    type of treatment (=.true.: ALL; =.false.: ONLY).
* HISO    name of the user-selected isotopes.
* CONC    user-defined number density of the user-selected isotopes. A
*         value of -99.99 is set to indicate that the compo value is
*         used.
* ITODO   non-depletion mask (=1 to force a user-selected isotope to be
*         non-depleting)
* LFROM   macroregion flag (=.true. if 'xs       n' groups are set).
*
*-----------------------------------------------------------------------
*
      USE GANLIB
      USE hdf5_wrap
      IMPLICIT NONE
*----
*  SUBROUTINE ARGUMENTS
*----
      TYPE(C_PTR) IPAPX,IPMAP
      INTEGER NMIX,IMPX,NMIL,NCAL,MD2,NFUEL,NCH,NB,ITER,MAXNIS,
     1        MIXC(NMIX),NPARM,NPAR,NISO(NMIX),ITODO(NMIX,MD2)
      REAL TERP(NCAL,NMIX),CONC(NMIX,MD2)
      LOGICAL LCUBIC,LISO(NMIX),LFROM
      CHARACTER(LEN=8) HISO(NMIX,MD2)
*----
*  LOCAL VARIABLES
*----
      INTEGER, PARAMETER::IOUT=6
      INTEGER, PARAMETER::MAXADD=10
      INTEGER, PARAMETER::MAXPAR=50
      INTEGER, PARAMETER::MAXLIN=50
      REAL, PARAMETER::REPS=1.0E-4
      INTEGER IBMOLD, IBM, IBTYP, IB, ICAL, ICH, IFUEL, ILONG, IMIX,
     & IMPY, INDIC, IPAR, ISO, ITYPE, ITYP, IVARTY, I, JBM, JB, JCAL,
     & JPARM, JPAR, J, NISOMI, NITMA, NPARMP, NTOT, N, RANK, TYPE,
     & NBYTE, DIMSR(5)
      REAL BURN0, BURN1, FLOTT, SUM, VALR1, VALR2, VARVAL
      CHARACTER TEXT24*24,HSMG*131,TEXT132*132,VALH(MAXPAR)*12,
     1 RECNAM*12,HPARNA*24,HCUBIC*24,TEXT12*12,HNAVAL*12
      INTEGER VALI(MAXPAR),MUPLET(2*MAXPAR),MUTYPE(2*MAXPAR),
     1 MAPLET(2*MAXPAR,MAXADD),MATYPE(2*MAXPAR,MAXADD),
     2 IDLTA(2*MAXPAR,MAXADD),NDLTA(2*MAXPAR),IDLTA1,
     3 MUPLT2(2*MAXPAR),MUTYP2(2*MAXPAR)
      DOUBLE PRECISION DFLOTT
      REAL VALR(2*MAXPAR,2),VALRA(2*MAXPAR,2,MAXADD),CONCMI(MD2)
      LOGICAL LDELT(2*MAXPAR),LDELT1,LSET(2*MAXPAR),LADD(2*MAXPAR),
     1 LSET1,LADD1,LDMAP(2*MAXPAR,2),LAMAP(2*MAXPAR,2,MAXADD),
     2 LCUB2(MAXPAR),LTST,LISOMI
      TYPE(C_PTR) JPMAP,KPMAP
*----
*  ALLOCATABLE ARRAYS
*----
      INTEGER, ALLOCATABLE, DIMENSION(:) :: NVALUE,FMIX,ZONEC,VINTE
      INTEGER, ALLOCATABLE, DIMENSION(:,:) :: ZONEDP
      REAL, ALLOCATABLE, DIMENSION(:) :: BRN0,BRN1,VARC,TERPA,VREAL
      REAL, ALLOCATABLE, DIMENSION(:,:) :: WPAR
      LOGICAL, ALLOCATABLE, DIMENSION(:) :: LPARM,LDELTA
      CHARACTER(LEN=8), ALLOCATABLE, DIMENSION(:) :: HISOMI, PARFMT
      CHARACTER(LEN=12), ALLOCATABLE, DIMENSION(:) :: VCHAR
      CHARACTER(LEN=24), ALLOCATABLE, DIMENSION(:) :: HPAR, PARKEY
      CHARACTER(LEN=132), ALLOCATABLE, DIMENSION(:) :: TEXT132V1
*----
*  SCRATCH STORAGE ALLOCATION
*   FMIX    fuel mixture indices per fuel bundle.
*   BRN0    contains either low burnup integration limits or
*           instantaneous burnups per fuel bundle.
*   BRN1    upper burnup integration limits per fuel bundle.
*   WPAR    other parameter distributions.
*   HPAR    'PARKEY' name of the other parameters.
*----
      ALLOCATE(LPARM(NPARM+1),FMIX(NCH*NB),ZONEDP(NCH,NB),ZONEC(NCH),
     1 BRN0(NCH*NB),BRN1(NCH*NB),WPAR(NCH*NB,NPARM),LDELTA(NMIX),
     2 HPAR(NPARM+1),HISOMI(MD2))
*----
*  RECOVER INFORMATION FOR THE APEX FILE.
*----
      CALL hdf5_info(IPAPX,"/Calculation_Content",RANK,TYPE,NBYTE,DIMSR)
      IF(RANK.GT.MAXLIN) CALL XABORT('ACRRGR: MAXLIN OVERFLOW.')
      IF(NPAR.GT.MAXPAR) CALL XABORT('ACRRGR: MAXPAR OVERFLOW.')
      CALL hdf5_read_data(IPAPX,"/Calculation_Content",TEXT132)
      IF((RANK.EQ.1).AND.(DIMSR(1).EQ.1)) THEN
        CALL hdf5_read_data(IPAPX,"/Calculation_Content",TEXT132)
        IF(IMPX.GT.0) WRITE(IOUT,'(1X,A)') TEXT132
      ELSE IF(RANK.EQ.1) THEN
        CALL hdf5_read_data(IPAPX,"/Calculation_Content",TEXT132V1)
        IF(IMPX.GT.0) THEN
          DO I=1,DIMSR(1)
            WRITE(IOUT,'(1X,A)') TEXT132V1(I)
          ENDDO
        ENDIF
        DEALLOCATE(TEXT132V1)
      ENDIF
      IF(NPAR.GT.0) THEN
         CALL hdf5_read_data(IPAPX,"/paramdescrip/PARNAM",PARKEY)
         CALL hdf5_read_data(IPAPX,"/paramdescrip/PARFMT",PARFMT)
      ENDIF
      IF(IMPX.GT.1) THEN
        WRITE(IOUT,*) 'NPAR=',NPAR,SIZE(PARKEY,1)
        DO I=1,NPAR
          WRITE(IOUT,*)'PARKEY(',I,')=',PARKEY(I),' PARFMT=',PARFMT(I)
        ENDDO
      ENDIF
      TERP(:NCAL,:NMIX)=0.0
      MIXC(:NMIX)=0
*----
*  READ (INTERP_DATA) AND SET VALI, VALR AND VALH PARAMETERS
*  CORRESPONDING TO THE INTERPOLATION POINT. FILL MUPLET FOR
*  PARAMETERS SET WITHOUT INTERPOLATION.
*----
      IBM=0
      MAXNIS=0
      NISOMI=0
      LISOMI=.TRUE.
      LDELT1=.FALSE.
      LADD1=.FALSE.
      NISO(:NMIX)=0
      LISO(:NMIX)=.TRUE.
      LDELTA(:NMIX)=.FALSE.
      ITODO(:NMIX,:MD2)=0
      IDLTA1=0
      LFROM=.FALSE.
      DO I=1,2*MAXPAR
         LSET(I)=.FALSE.
         LDELT(I)=.FALSE.
         LADD(I)=.FALSE.
         LDMAP(I,:2)=.FALSE.
         LAMAP(I,:2,:MAXADD)=.FALSE.
         NDLTA(I)=0
      ENDDO
*----
*  READ THE PARKEY NAME OF THE BURNUP FOR THIS APEX.
*----
      CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
      IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(1).')
      IF((TEXT24.EQ.'MIX').OR.(TEXT24.EQ.';')) THEN
        NPARMP=NPARM
        GO TO 30
      ELSE
*       add burnup to parameters
        NPARMP=NPARM+1
        HPAR(NPARMP)=TEXT24
        CALL REDGET(INDIC,NITMA,FLOTT,TEXT12,DFLOTT)
        IF(INDIC.NE.3)CALL XABORT('MCRRGR: CHARACTER DATA EXPECTED(2).')
        IF((TEXT12.EQ.'MIX').OR.(TEXT12.EQ.';')) GO TO 30
        HNAVAL=TEXT12
      ENDIF
*----
*  MAIN LOOP OF THE SUBROUTINE (UNTIL THE END)
*----
   20 CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
      IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(2).')
   30 IF(TEXT24.EQ.'MIX')THEN
        NISOMI=0
        LISOMI=.TRUE.
        IVARTY=0
        IBTYP=0
        HNAVAL=' '
        MUPLET(:NPAR)=0
        MUTYPE(:NPAR)=0
        VALI(:NPAR)=0
        VALR(:NPAR,1)=0.0
        VALR(:NPAR,2)=0.0
        DO 35 I=1,MAXADD
          MAPLET(:NPAR,I)=0
          MATYPE(:NPAR,I)=0
          VALRA(:NPAR,1,I)=0.0
          VALRA(:NPAR,2,I)=0.0
   35   CONTINUE
        DO I=1,2*MAXPAR
          LSET(I)=.FALSE.
          LDELT(I)=.FALSE.
          LADD(I)=.FALSE.
          LDMAP(I,:2)=.FALSE.
          LAMAP(I,:2,:MAXADD)=.FALSE.
        ENDDO
        DO 40 I=1,NPAR
        VALH(I)=' '
   40   CONTINUE
        LCUB2(:NPAR)=LCUBIC
        CALL REDGET(INDIC,IBM,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.1)CALL XABORT('ACRRGR: INTEGER DATA EXPECTED.')
*       CHECK FUEL MIXTURE
        JPMAP=LCMGID(IPMAP,'FUEL')
        DO IFUEL=1,NFUEL
          KPMAP=LCMGIL(JPMAP,IFUEL)
          CALL LCMGET(KPMAP,'MIX',IMIX)
          IF(IMIX.EQ.IBM)GOTO 50
        ENDDO
        WRITE(IOUT,*)'ACRRGR: UNABLE TO FIND FUEL MIXTURE ',IBM
        CALL XABORT('ACRRGR: WRONG MIXTURE NUMBER.')
   50   IBMOLD=1
        CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(3).')
        IF(TEXT24.EQ.'FROM')THEN
          CALL REDGET(INDIC,IBMOLD,FLOTT,TEXT24,DFLOTT)
          IF(INDIC.NE.1)CALL XABORT('ACRRGR: INTEGER DATA EXPECTED.')
          CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTE'
     1     //'D.')
          LFROM=.TRUE.
        ELSE IF(TEXT24.EQ.'USE') THEN
          IBMOLD=IBM
          CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTE'
     1     //'D.')
          LFROM=.TRUE.
        ENDIF
        GOTO 30
      ELSEIF(TEXT24.EQ.'MICRO')THEN
        IF(IBM.EQ.0) CALL XABORT('ACRRGR: MIX NOT SET (1).')
        CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(4).')
        IF(TEXT24.EQ.'ALL')THEN
          LISOMI=.TRUE.
        ELSEIF(TEXT24.EQ.'ONLY')THEN
          LISOMI=.FALSE.
        ENDIF
        CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(5).')
   60   IF(TEXT24.EQ.'ENDMIX')THEN
          GOTO 30
        ELSE IF(TEXT24.EQ.'NOEV') THEN
          IF(NISOMI.EQ.0) CALL XABORT('ACRRGR: MISPLACED NOEV.')
          ITODO(IBM,NISOMI)=1
        ELSE
          NISOMI=NISOMI+1
          IF(NISOMI.GT.MD2) CALL XABORT('ACRRGR: MD2 OVERFLOW.')
          MAXNIS=MAX(MAXNIS,NISOMI)
          HISOMI(NISOMI)=TEXT24(:8)
          CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          IF(INDIC.EQ.2)THEN
            CONCMI(NISOMI)=FLOTT
          ELSEIF((INDIC.EQ.3).AND.(TEXT24.EQ.'*'))THEN
            CONCMI(NISOMI)=-99.99
          ELSE
            CALL XABORT('ACRRGR: INVALID HISO DATA.')
          ENDIF
        ENDIF
        CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED.')
        GOTO 60
      ELSEIF((TEXT24.EQ.'SET').OR.(TEXT24.EQ.'DELTA').OR.
     1       (TEXT24.EQ.'ADD'))THEN
        IF(IBM.EQ.0) CALL XABORT('ACRRGR: MIX NOT SET (2).')
        LSET1=.FALSE.
        LDELT1=.FALSE.
        LADD1=.FALSE.
        ITYPE=0
        IF(TEXT24.EQ.'SET')THEN
          ITYPE=1
          LSET1=.TRUE.
        ELSEIF(TEXT24.EQ.'DELTA')THEN
          ITYPE=2
          LDELT1=.TRUE.
        ELSEIF(TEXT24.EQ.'ADD')THEN
          ITYPE=2
          LADD1=.TRUE.
          IDLTA1=IDLTA1+1
          DO 65 JPAR=1,NPAR
            MAPLET(JPAR,IDLTA1)=MUPLET(JPAR)
            MATYPE(JPAR,IDLTA1)=MUTYPE(JPAR)
   65     CONTINUE
        ENDIF
        CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(7).')
        IF((TEXT24.EQ.'LINEAR').OR.(TEXT24.EQ.'CUBIC')) THEN
          HCUBIC=TEXT24
          CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
        ELSE
          HCUBIC=' '
        ENDIF
        IF(INDIC.NE.3)CALL XABORT('ACRRGR: CHARACTER DATA EXPECTED(8).')
        DO I=1,NPAR
          IF(TEXT24.EQ.PARKEY(I))THEN
            IPAR=I
            HPARNA=TEXT24
            GOTO 70
          ENDIF
        ENDDO
        WRITE(HSMG,'(18HACRRGR: PARAMETER ,A,14H NOT FOUND(1).)') TEXT24
        CALL XABORT(HSMG)
*
   70   IF(HCUBIC.EQ.'LINEAR') THEN
          LCUB2(IPAR)=.FALSE.
        ELSE IF(HCUBIC.EQ.'CUBIC') THEN
          LCUB2(IPAR)=.TRUE.
        ENDIF
        CALL hdf5_read_data(IPAPX,"/paramdescrip/NVALUE",NVALUE)
        WRITE(RECNAM,'(''/paramvalues/PVAL'',I8)') IPAR
        CALL hdf5_info(IPAPX,RECNAM,RANK,TYPE,NBYTE,DIMSR)
        IF(TYPE.EQ.99) THEN
          WRITE(HSMG,'(25HACRRGR: GLOBAL PARAMETER ,A,12H NOT SET(1).)')
     1    TRIM(PARKEY(IPAR))
          CALL XABORT(HSMG)
        ENDIF
        IF((IPAR.GT.NPAR).OR.
     1   ((IPAR.LE.NPAR).AND.(PARFMT(IPAR).EQ.'FLOTTANT')))THEN
          CALL hdf5_read_data(IPAPX,RECNAM,VREAL)
          CALL REDGET(INDIC,NITMA,VALR1,TEXT24,DFLOTT)
          IF(INDIC.EQ.2)THEN
            VALR2=VALR1
            IF(LSET1) THEN
              LSET(IPAR)=.TRUE.
              VALR(IPAR,1)=VALR1
              VALR(IPAR,2)=VALR1
            ENDIF
            IF(LDELT1) THEN
              LDELT(IPAR)=.TRUE.
              VALR(IPAR,1)=VALR1
              VALR(IPAR,2)=VALR1
            ELSEIF(LADD1) THEN
              LADD(IPAR)=.TRUE.
              VALRA(IPAR,1,IDLTA1)=VALR1
              VALRA(IPAR,2,IDLTA1)=VALR1
              NDLTA(IPAR)=NDLTA(IPAR)+1
              IF(NDLTA(IPAR).GT.MAXADD) CALL XABORT('ACRRGR: MAXADD OV'
     1        //'ERFLOW.')
              IDLTA(IPAR,NDLTA(IPAR))=IDLTA1
            ENDIF
          ELSEIF(TEXT24.EQ.'MAP')THEN
            IF(LDELT1)THEN
              LDELT(IPAR)=.TRUE.
              LDMAP(IPAR,1)=.TRUE.
            ELSEIF(LADD1)THEN
              LADD(IPAR)=.TRUE.
              NDLTA(IPAR)=NDLTA(IPAR)+1
              IF(NDLTA(IPAR).GT.MAXADD) CALL XABORT('ACRRGR: MAXADD OV'
     1        //'ERFLOW.')
              LAMAP(IPAR,1,NDLTA(IPAR))=.TRUE.
              IDLTA(IPAR,NDLTA(IPAR))=IDLTA1
            ENDIF
            IF(LSET1.AND.(.NOT.LSET(IPAR))) GO TO 20
          ELSE
            CALL XABORT('ACRRGR: real value or "MAP" expected(1).')
          ENDIF
          CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          IF(ITYPE.GE.2)THEN
            IF(INDIC.EQ.2)THEN
              VALR2=FLOTT
              IF(LDELT1)THEN
                VALR(IPAR,2)=VALR2
              ELSEIF(LADD1)THEN
                VALRA(IPAR,2,IDLTA1)=VALR2
              ENDIF
            ELSEIF(TEXT24.EQ.'MAP')THEN
              IF(LDELT1)THEN
                LDMAP(IPAR,2)=.TRUE.
              ELSEIF(LADD1)THEN
                LAMAP(IPAR,2,IDLTA1)=.TRUE.
              ENDIF
            ELSE
              CALL XABORT('ACRRGR: real value or "MAP" expected(2).')
            ENDIF
            CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          ENDIF
          LTST=.FALSE.
          IF(.NOT.LADD1)THEN
            IF(VALR(IPAR,1).EQ.VALR(IPAR,2)) LTST=.TRUE.
            MUPLET(IPAR)=-1
            MUTYPE(IPAR)=ITYPE
          ELSE
            MAPLET(IPAR,IDLTA1)=-1
            MATYPE(IPAR,IDLTA1)=2
          ENDIF
          IF((LTST).AND.(ITYPE.EQ.1))THEN
            DO J=1,NVALUE(IPAR)
              IF(ABS(VALR(IPAR,1)-VREAL(J)).LE.REPS*ABS(VREAL(J)))THEN
                MUPLET(IPAR)=J
                GOTO 30
              ENDIF
            ENDDO
          ENDIF
*----
*  ERRORS HANDLING
*----
          IF(VALR1.LT.VREAL(1))THEN
*           OUTSIDE OF THE DOMAIN (1)
            WRITE(HSMG,'(23HACRRGR: REAL PARAMETER ,A,10H WITH VALU,
     1       1HE,1P,E12.4,26H IS OUTSIDE THE DOMAIN.(1))') TRIM(HPARNA),
     2       VALR1
             WRITE(6,*)'Domain:',VREAL(1),' <-> ',VREAL(NVALUE(IPAR))
            CALL XABORT(HSMG)
          ELSEIF(VALR2.GT.VREAL(NVALUE(IPAR)))THEN
*           OUTSIDE OF THE DOMAIN (2)
            WRITE(HSMG,'(23HACRRGR: REAL PARAMETER ,A,10H WITH VALU,
     1       1HE,1P,E12.4,26H IS OUTSIDE THE DOMAIN.(2))') TRIM(HPARNA),
     2       VALR2
             WRITE(6,*)'Domain:',VREAL(1),' <-> ',VREAL(NVALUE(IPAR))
            CALL XABORT(HSMG)
          ELSEIF((VALR1.GT.VALR2).AND.(ITYPE.EQ.1))THEN
*           ITYPE=1 correspond to an integral between VALR1 and VALR2
*           otherwise it is a simple difference
            WRITE(HSMG,'(23HACRRGR: REAL PARAMETER ,A,9H IS DEFIN,
     1       7HED WITH,1P,E12.4,2H >,E12.4,4H.(1))') TRIM(HPARNA),
     2       VALR1,VALR2
            CALL XABORT(HSMG)
          ENDIF
          IF((LADD1).AND.(TEXT24.EQ.'REF'))THEN
  120       DEALLOCATE(VREAL)
            IPAR=-99
            CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
            IF(TEXT24.EQ.'ENDREF') GOTO 140
            DO I=1,NPAR
              IF(TEXT24.EQ.PARKEY(I))THEN
                IPAR=I
                GOTO 130
              ENDIF
            ENDDO
            CALL XABORT('ACRRGR: PARAMETER '//TEXT24//' NOT FOUND(2).')
  130       CONTINUE
            CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
            IF(INDIC.EQ.2)THEN
              VALRA(IPAR,1,IDLTA1)=FLOTT
              VALRA(IPAR,2,IDLTA1)=FLOTT
              WRITE(RECNAM,'(''/paramvalues/PVAL'',I8)') IPAR
              CALL hdf5_info(IPAPX,RECNAM,RANK,TYPE,NBYTE,DIMSR)
              IF(TYPE.EQ.99) THEN
                 WRITE(HSMG,'(25HACRRGR: GLOBAL PARAMETER ,A,
     1           12H NOT SET(2).)') TRIM(PARKEY(IPAR))
                 CALL XABORT(HSMG)
              ENDIF
              CALL hdf5_read_data(IPAPX,RECNAM,VREAL)
              MAPLET(IPAR,IDLTA1)=-1
              MATYPE(IPAR,IDLTA1)=1
              DO J=1,NVALUE(IPAR)
                IF(ABS(VALRA(IPAR,1,IDLTA1)-VREAL(J)).LE.
     1             REPS*ABS(VREAL(J)))THEN
                  MAPLET(IPAR,IDLTA1)=J
                  GOTO 120
                ENDIF
              ENDDO
            ELSEIF(TEXT24.EQ.'SAMEASREF')THEN
              MAPLET(IPAR,IDLTA1)=-1
              MATYPE(IPAR,IDLTA1)=-1
            ELSE
              CALL XABORT('ACRRGR: REAL or "SAMEASREF" expected')
            ENDIF
            GOTO 120
  140       CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          ELSE IF((LDELT1).AND.(TEXT24.EQ.'REF'))THEN
  150       DEALLOCATE(VREAL)
            IPAR=-99
            CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
            IF(TEXT24.EQ.'ENDREF') GOTO 170
            DO I=1,NPAR
              IF(TEXT24.EQ.PARKEY(I))THEN
                IPAR=I
                GOTO 160
              ENDIF
            ENDDO
            CALL XABORT('ACRRGR: PARAMETER '//TEXT24//' NOT FOUND(3).')
  160       CONTINUE
            CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
            IF(INDIC.EQ.2)THEN
              VALR(IPAR,1)=FLOTT
              VALR(IPAR,2)=FLOTT
              WRITE(RECNAM,'(''/paramvalues/PVAL'',I8)') IPAR
              CALL hdf5_info(IPAPX,RECNAM,RANK,TYPE,NBYTE,DIMSR)
              IF(TYPE.EQ.99) THEN
                 WRITE(HSMG,'(25HACRRGR: GLOBAL PARAMETER ,A,
     1           12H NOT SET(3).)') TRIM(PARKEY(IPAR))
                 CALL XABORT(HSMG)
              ENDIF
              CALL hdf5_read_data(IPAPX,RECNAM,VREAL)
              MUPLET(IPAR)=-1
              MUTYPE(IPAR)=1
              DO J=1,NVALUE(IPAR)
                IF(ABS(VALR(IPAR,1)-VREAL(J)).LE.REPS*ABS(VREAL(J)))THEN
                  MUPLET(IPAR)=J
                  GOTO 150
                ENDIF
              ENDDO
            ELSEIF(TEXT24.EQ.'SAMEASREF')THEN
              MUPLET(IPAR)=-1
              MUTYPE(IPAR)=-1
            ELSE
              CALL XABORT('ACRRGR: REAL or "SAMEASREF" expected')
            ENDIF
            GOTO 150
  170       CALL REDGET(INDIC,NITMA,FLOTT,TEXT24,DFLOTT)
          ENDIF
          DEALLOCATE(VREAL)
          GOTO 30
        ELSEIF(PARFMT(IPAR).EQ.'ENTIER')THEN
          IF(ITYPE.NE.1)CALL XABORT('ACRRGR: SET MANDATORY WITH INT'
     1     //'EGER PARAMETERS.')
          CALL REDGET(INDIC,VALI(IPAR),FLOTT,TEXT24,DFLOTT)
          IF(INDIC.NE.1)CALL XABORT('ACRRGR: INTEGER DATA EXPECTED.')
          CALL hdf5_read_data(IPAPX,RECNAM,VINTE)
          DO 175 J=1,NVALUE(IPAR)
            IF(VALI(IPAR).EQ.VINTE(J))THEN
              MUPLET(IPAR)=J
              MUTYPE(IPAR)=ITYPE
              GOTO 20
            ENDIF
  175      CONTINUE
          WRITE(HSMG,'(26HACRRGR: INTEGER PARAMETER ,A,9H WITH VAL,
     1     2HUE,I5,28H NOT FOUND IN APEX DATABASE.)') PARKEY(IPAR),
     2     VALI(IPAR)
           CALL XABORT(HSMG)
        ELSEIF(PARFMT(IPAR).EQ.'CHAINE')THEN
          IF(ITYPE.NE.1)CALL XABORT('ACRRGR: SET MANDATORY WITH STR'
     1     //'ING PARAMETERS.')
          CALL REDGET(INDIC,NITMA,FLOTT,VALH(IPAR),DFLOTT)
          IF(INDIC.NE.3)CALL XABORT('ACRRGR: STRING DATA EXPECTED.')
          CALL hdf5_read_data(IPAPX,RECNAM,VCHAR)
          DO 180 J=1,NVALUE(IPAR)
            IF(VALH(IPAR).EQ.VCHAR(J))THEN
              MUPLET(IPAR)=J
              MUTYPE(IPAR)=ITYPE
              GOTO 20
            ENDIF
  180     CONTINUE
          WRITE(HSMG,'(25HACRRGR: STRING PARAMETER ,A,10H WITH VALU,
     1     1HE,A12,28H NOT FOUND IN APEX DATABASE.)') PARKEY(IPAR),
     2     VALH(IPAR)
          CALL XABORT(HSMG)
        ELSE
          CALL XABORT('ACRRGR: INVALID FORMAT='//PARFMT(IPAR))
        ENDIF
      ELSEIF(TEXT24.EQ.'TIMAV-BURN')THEN
        IF(IBM.EQ.0) CALL XABORT('ACRRGR: MIX NOT SET (3).')
        IBTYP=1
      ELSEIF(TEXT24.EQ.'INST-BURN')THEN
        IF(IBM.EQ.0) CALL XABORT('ACRRGR: MIX NOT SET (4).')
        IBTYP=2
      ELSEIF(TEXT24.EQ.'AVG-EX-BURN')THEN
        IF(IBM.EQ.0) CALL XABORT('ACRRGR: MIX NOT SET (5).')
        IBTYP=3
        CALL REDGET(INDIC,IVARTY,FLOTT,TEXT24,DFLOTT)
        IF(INDIC.NE.1)CALL XABORT('ACRRGR: INTEGER DATA EXPECTED.')
      ELSEIF(TEXT24.EQ.'ENDMIX')THEN
*----
*  RECOVER FUEL-MAP INFORMATION.
*----
        IF(IMPX.GT.0) THEN
          DO IPAR=1,NPAR
            IF(PARFMT(IPAR).EQ.'FLOTTANT')THEN
              IF(LCUB2(IPAR)) THEN
                WRITE(IOUT,'(26H ACRRGR: GLOBAL PARAMETER:,A12,5H ->CU,
     1          18HBIC INTERPOLATION.)') PARKEY(IPAR)
              ELSE
                WRITE(IOUT,'(26H ACRRGR: GLOBAL PARAMETER:,A12,5H ->LI,
     1          19HNEAR INTERPOLATION.)') PARKEY(IPAR)
              ENDIF
            ENDIF
          ENDDO
        ENDIF
        FMIX(:NCH*NB)=0
        CALL LCMGET(IPMAP,'FLMIX',FMIX)
        CALL NCRMAP(IPMAP,NPARM,HPAR,NCH,NB,IBTYP,HNAVAL,IMPX,BRN0,BRN1,
     1              WPAR,LPARM)
        IF(IBTYP.EQ.3) THEN
          IF(IVARTY.EQ.0) CALL XABORT('ACRRGR: IVARTY NOT SET.')
          CALL LCMGET(IPMAP,'B-ZONE',ZONEC)
          DO ICH=1,NCH
            DO J=1,NB
              IF(ZONEC(ICH).EQ.IVARTY) THEN
                ZONEDP(ICH,J)=1
              ELSE
                ZONEDP(ICH,J)=0
              ENDIF
            ENDDO
          ENDDO
          CALL LCMLEN(IPMAP,'B-VALUE',ILONG,ITYP)
          IF (ILONG.EQ.0) CALL XABORT('ACRRGR: NO SAVED VALUES FOR '
     1    //'THIS TYPE OF VARIABLE IN L_MAP')
          ALLOCATE(VARC(ILONG))
          CALL LCMGET(IPMAP,'B-VALUE',VARC)
          VARVAL=VARC(IVARTY)
          DEALLOCATE(VARC)
        ENDIF
*----
*  PERFORM INTERPOLATION OVER THE FUEL MAP.
*----
        DO 185 JPARM=1,NPARMP
          IPAR=0
          DO I=1,NPAR
            IF(HPAR(JPARM).EQ.PARKEY(I))THEN
              IPAR=I
              IF(LSET(IPAR)) THEN
                IF(IMPX.GT.0) WRITE(6,*) 'L_MAP values overwritten by '
     1          // 'the SET option for parameter '//TRIM(HPAR(JPARM))
                IF(.NOT.LADD(IPAR)) LPARM(JPARM)=.FALSE.
              ENDIF
              GOTO 185
            ENDIF
          ENDDO
          LPARM(JPARM)=.FALSE.
  185   CONTINUE
*----
*  COMPUTE ALL THE MUPLETS FOR EACH BUNDLE
*----
        IMPY=MAX(0,IMPX-1)
        NTOT=0
        DO 285 JB=1,NB
        DO 280 ICH=1,NCH
        IB=(JB-1)*NCH+ICH
        IF(FMIX(IB).EQ.0) GO TO 280
        NTOT=NTOT+1
        IF(FMIX(IB).EQ.IBM)THEN
          IF(NTOT.GT.NMIX) CALL XABORT('ACRRGR: NMIX OVERFLOW.')
          DO 260 JPARM=1,NPARMP
          IF(.NOT.LPARM(JPARM))GOTO 260
        DO I=1,NPAR
          IF(HPAR(JPARM).EQ.PARKEY(I))THEN
            IPAR=I
            HPARNA=HPAR(JPARM)
            GOTO 190
          ENDIF
        ENDDO
        WRITE(HSMG,'(18HACRRGR: PARAMETER ,A,14H NOT FOUND(4).)')
     1  TRIM(HPAR(JPARM))
        CALL XABORT(HSMG)
  190   CONTINUE
        WRITE(RECNAM,'(''/paramvalues/PVAL'',I8)') IPAR
        CALL hdf5_info(IPAPX,RECNAM,RANK,TYPE,NBYTE,DIMSR)
        IF(TYPE.EQ.99) THEN
          WRITE(HSMG,'(25HACRRGR: GLOBAL PARAMETER ,A,12H NOT SET(4).)')
     1    TRIM(PARKEY(IPAR))
          CALL XABORT(HSMG)
        ENDIF
        ITYPE=0
        IF((JPARM.EQ.NPARMP).AND.(NPARMP.EQ.NPARM+1))THEN
*         parameter JPARAM is burnup
          IF(.NOT.LSET(IPAR))THEN
            MUTYPE(IPAR)=1
            MUPLET(IPAR)=-1
            BURN0=0.0
            BURN1=0.0
            IF(IBTYP.EQ.1)THEN
*             TIME-AVERAGE
              BURN0=BRN0(IB)
              BURN1=BRN1(IB)
            ELSEIF(IBTYP.EQ.2)THEN
*             INSTANTANEOUS
              BURN0=BRN0(IB)
              BURN1=BURN0
            ELSEIF(IBTYP.EQ.3)THEN
*             DIFFERENCIATION RELATIVE TO EXIT BURNUP
              ITYPE=3
              BURN0=BRN0(IB)
              BURN1=BRN1(IB)
            ENDIF
            VALR(IPAR,1)=BURN0
            VALR(IPAR,2)=BURN1
            VALR1=VALR(IPAR,1)
            VALR2=VALR(IPAR,2)
            ITYPE=1
          ENDIF
        ELSE
          IF(.NOT.LSET(IPAR))THEN
            VALR(IPAR,1)=WPAR(IB,JPARM)
            VALR(IPAR,2)=WPAR(IB,JPARM)
            MUPLET(IPAR)=-1
            MUTYPE(IPAR)=1
            VALR1=VALR(IPAR,1)
            VALR2=VALR(IPAR,2)
            ITYPE=1
          ENDIF
          IF(LDMAP(IPAR,1).OR.LDMAP(IPAR,2))THEN
            IF(LDMAP(IPAR,1)) VALR(IPAR,1)=WPAR(IB,JPARM)
            IF(LDMAP(IPAR,2)) VALR(IPAR,2)=WPAR(IB,JPARM)
            MUPLET(IPAR)=-1
            MUTYPE(IPAR)=2
            VALR1=VALR(IPAR,1)
            VALR2=VALR(IPAR,2)
            ITYPE=2
          ELSE IF(LADD(IPAR))THEN
            DO N=1,NDLTA(IPAR)
              IDLTA1=IDLTA(IPAR,N)
              IF(LAMAP(IPAR,1,IDLTA1)) THEN
                VALRA(IPAR,1,IDLTA1)=WPAR(IB,JPARM)
                MAPLET(IPAR,IDLTA1)=-1
                MATYPE(IPAR,IDLTA1)=2
              ENDIF
              IF(LAMAP(IPAR,2,IDLTA1)) THEN
                VALRA(IPAR,2,IDLTA1)=WPAR(IB,JPARM)
                MAPLET(IPAR,IDLTA1)=-1
                MATYPE(IPAR,IDLTA1)=2
              ENDIF
            ENDDO
            VALR1=VALRA(IPAR,1,IDLTA(IPAR,1))
            VALR2=VALRA(IPAR,2,IDLTA(IPAR,1))
            ITYPE=2
          ENDIF
        ENDIF
        WRITE(RECNAM,'(''/paramvalues/PVAL'',I8)') IPAR
        CALL hdf5_info(IPAPX,RECNAM,RANK,TYPE,NBYTE,DIMSR)
        IF(TYPE.EQ.99) THEN
          WRITE(HSMG,'(25HACRRGR: GLOBAL PARAMETER ,A,12H NOT SET(5).)')
     1    TRIM(PARKEY(IPAR))
          CALL XABORT(HSMG)
        ENDIF
        CALL hdf5_read_data(IPAPX,RECNAM,VREAL)
        IF(ITYPE.EQ.1)THEN
          IF(VALR1.EQ.VALR2)THEN
            DO J=1,NVALUE(IPAR)
              IF(ABS(VALR1-VREAL(J)).LE.REPS*ABS(VREAL(J)))THEN
                MUPLET(IPAR)=J
                MUTYPE(IPAR)=ITYPE
                GOTO 260
              ENDIF
            ENDDO
          ENDIF
        ENDIF
*----
*  ERRORS HANDLING
*----
        IF(VALR1.LT.VREAL(1))THEN
*         OUTSIDE OF THE DOMAIN (1)
          WRITE(HSMG,'(23HACRRGR: REAL PARAMETER ,A,10H WITH VALU,
     1    1HE,1P,E12.4,26H IS OUTSIDE THE DOMAIN(3).)') TRIM(HPARNA),
     2    VALR1
          WRITE(6,*)'Domain:',VREAL(1),' <-> ',VREAL(NVALUE(IPAR))
          CALL XABORT(HSMG)
        ELSEIF(VALR2.GT.VREAL(NVALUE(IPAR)))THEN
*         OUTSIDE OF THE DOMAIN (2)
          WRITE(HSMG,'(23HACRRGR: REAL PARAMETER ,A,10H WITH VALU,
     1    1HE,1P,E12.4,26H IS OUTSIDE THE DOMAIN(4).)') TRIM(HPARNA),
     2    VALR2
          WRITE(6,*)'Domain:',VREAL(1),' <-> ',VREAL(NVALUE(IPAR))
          CALL XABORT(HSMG)
        ELSEIF((ITYPE.EQ.1).AND.(VALR1.GT.VALR2))THEN
*         VALR1 > VALR2
          WRITE(HSMG,'(23HACRRGR: REAL PARAMETER ,A,9H IS DEFIN,
     1    7HED WITH,1P,E12.4,2H >,E12.4,4H.(2))') TRIM(HPARNA),
     2    VALR1,VALR2
          CALL XABORT(HSMG)
        ENDIF
        DEALLOCATE(VREAL)
*----
*  COMPUTE THE TERP FACTORS USING TABLE-OF-CONTENT INFORMATION.
*----
  260     CONTINUE
          MIXC(NTOT)=IBMOLD
          IF(IBMOLD.GT.NMIL)
     1       CALL XABORT('ACRRGR: MIX OVERFLOW (APEX).')
          IF(IMPY.GT.2) WRITE(6,'(32H ACRRGR: COMPUTE TERP FACTORS IN,
     1    12H NEW MIXTURE,I5,1H.)') NTOT
          NISO(NTOT)=NISOMI
          LISO(NTOT)=LISOMI
          LDELTA(NTOT)=LDELT1
          DO ISO=1,NISOMI
            HISO(NTOT,ISO)=HISOMI(ISO)
            CONC(NTOT,ISO)=CONCMI(ISO)
          ENDDO
          DO JPAR=1,NPAR
            MUPLT2(JPAR)=MUPLET(JPAR)
          ENDDO
          IF(IBTYP.EQ.3)THEN
             IF(ZONEDP(ICH,JB).NE.0) THEN
                CALL ACRTRP(IPAPX,LCUB2,IMPY,NPAR,NCAL,MUPLT2,MUTYPE,
     1                      VALR(1,1),VARVAL,TERP(1,NTOT))
             ELSE
                TERP(:NCAL,NTOT)=0.0
             ENDIF
          ELSE
             CALL ACRTRP(IPAPX,LCUB2,IMPY,NPAR,NCAL,MUPLT2,MUTYPE,
     1                   VALR(1,1),VARVAL,TERP(1,NTOT))
          ENDIF
*         DELTA-ADD
          DO 270 IPAR=1,NPAR
            IF(LADD(IPAR))THEN
              DO N=1,NDLTA(IPAR)
                IDLTA1=IDLTA(IPAR,N)
                DO JPAR=1,NPAR
                  MUPLT2(JPAR)=MAPLET(JPAR,IDLTA1)
                  MUTYP2(JPAR)=MATYPE(JPAR,IDLTA1)
                ENDDO
                DO JPAR=1,NPAR
                  IF(MUTYP2(JPAR).LT.0)THEN
                    MUPLT2(JPAR)=MUPLET(JPAR)
                    MUTYP2(JPAR)=MUTYPE(JPAR)
                    VALRA(JPAR,1,IDLTA1)=VALR(JPAR,1)
                    VALRA(JPAR,2,IDLTA1)=VALR(JPAR,2)
                  ENDIF
                ENDDO
                ALLOCATE(TERPA(NCAL))
                CALL ACRTRP(IPAPX,LCUB2,IMPY,NPAR,NCAL,MUPLT2,MUTYP2,
     1          VALRA(1,1,IDLTA1),VARVAL,TERPA(1))
                DO 275 JCAL=1,NCAL
                TERP(JCAL,NTOT)=TERP(JCAL,NTOT)+TERPA(JCAL)
  275           CONTINUE
                DEALLOCATE(TERPA)
              ENDDO
            ENDIF
  270     CONTINUE
        ENDIF
  280   CONTINUE
  285   CONTINUE
        IF(NTOT.NE.NMIX) CALL XABORT('ACRRGR: ALGORITHM FAILURE.')
        IBM=0
      ELSEIF((TEXT24.EQ.'APEX').OR.(TEXT24.EQ.'TABLE').OR.
     1   (TEXT24.EQ.'CHAIN').OR.(TEXT24.EQ.';')) THEN
*----
*  CHECK TERP FACTORS AND RETURN
*----
        IF(TEXT24.EQ.';') ITER=0
        IF(TEXT24.EQ.'APEX') ITER=1
        IF(TEXT24.EQ.'TABLE') ITER=2
        IF(TEXT24.EQ.'CHAIN') ITER=3
        DO 300 IBM=1,NMIX
        IBMOLD=MIXC(IBM)
        IF(IBMOLD.EQ.0) GO TO 300
        IF(NISO(IBM).GT.MAXNIS) CALL XABORT('ACRRGR: MAXNIS OVERFLOW.')
        IF(LDELTA(IBM)) THEN
          SUM=0.0
        ELSE
          SUM=1.0
        ENDIF
        DO 290 ICAL=1,NCAL
        SUM=SUM-TERP(ICAL,IBM)
  290   CONTINUE
        IF(ABS(SUM).GT.1.0E-4) THEN
           WRITE(HSMG,'(43HACRRGR: INVALID INTERPOLATION FACTORS IN MI,
     1     5HXTURE,I4,1H.)') IBM
           CALL XABORT(HSMG)
        ENDIF
  300   CONTINUE
        DEALLOCATE(NVALUE)
*----
*  EXIT MAIN LOOP OF THE SUBROUTINE
*----
        GO TO 310
      ELSE
        CALL XABORT('ACRRGR: '//TRIM(TEXT24)//' IS AN INVALID KEYWORD.')
      ENDIF
      GOTO 20
*----
*  PRINT INTERPOLATION (TERP) FACTORS
*----
  310 IF(IMPX.GT.2) THEN
        WRITE(IOUT,'(/30H ACRRGR: INTERPOLATION FACTORS)')
        DO ICAL=1,NCAL
          DO IBM=1,NMIX
            IF(TERP(ICAL,IBM).NE.0.0) THEN
              WRITE(IOUT,320) ICAL,(TERP(ICAL,JBM),JBM=1,NMIX)
              EXIT
            ENDIF
          ENDDO
        ENDDO
      ENDIF
*----
*  SCRATCH STORAGE DEALLOCATION
*----
      IF(NPAR.GT.0) DEALLOCATE(PARFMT,PARKEY)
      DEALLOCATE(HISOMI,HPAR,LDELTA,WPAR,BRN1,BRN0,ZONEC,ZONEDP,FMIX,
     1 LPARM)
      RETURN
*
  320 FORMAT(6H CALC=,I8,6H TERP=,1P,8E13.5/(20X,8E13.5))
      END