summaryrefslogtreecommitdiff
path: root/Dragon/src/NXTSGT.f
blob: 7fc0b45dbdca0b9f9c094676eb040d55640fa9b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
*DECK NXTSGT
      SUBROUTINE NXTSGT(IPTRK ,IPRINT,MAXMSH,ITYPG ,IGEO  ,ILEV  ,
     >                  MAXMSS,NMIX  ,NM    ,MIX   ,DAMESH,ISPLT ,
     >                  NMIXS ,NMS   ,DAMESS,
     >                  ITSYM ,NREGS ,NSURS ,NREGN ,NSURN ,NEREN ,
     >                  IDREG ,IDSUR )
*
*-----------------------------------------------------------------------
*
*Purpose:
* Discretize geometry according to splitting options for
* HEXT, HEXCELT, HEXTZ and HEXTCELZ geometry.
*
*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):
* G. Marleau
*
*Parameters: input
* IPTRK   pointer to the TRACKING data structure.
* IPRINT  intermediate printing level for output.
* MAXMSH  maximum number of elements in MESH array.
* ITYPG   type of geometry.
* IGEO    geometry number.
* ILEV    geometry level.
* MAXMSS  maximum number of elements in MESH array after split.
* NMIX    number of elements in MIX array.
* NM      mesh size in all directions ($X$, $Y$, $Z$ and $R$).
* MIX     final mixture description for geometry (including MMIX).
* DAMESH  final mesh description for geometry.
* ISPLT   final split desctiption for geometry.
* NMIXS   number of regional mixtures.
* NMS     mesh size after splitting.
* ITSYM   flag for symmetries to test.
* NREGS   maximum number of regions in splitted geometry.
* NSURS   maximum number of surfaces in splitted geometry.
* NREGN   number of regions in splitted geometry after symmetry.
* NSURN   number of surfaces in splitted geometry after symmetry.
* NEREN   maximum number of elements in IREN.
*
*Parameters: input/output
* DAMESS  mesh description for rotated geometry.
* IDREG   region identifier after symmetry.
* IDSUR   surface identifier after symmetry.
*
*Reference:
*  G. Marleau,
*  New Geometries Processing in DRAGON: The NXT: Module,
*  Report IGE-260, Polytechnique Montreal,
*  Montreal, 2005.
*
*-----------------------------------------------------------------------
*
      USE              GANLIB
      IMPLICIT         NONE
*----
*  Subroutine arguments
*----
      TYPE(C_PTR)      IPTRK
      INTEGER          IPRINT,MAXMSH,ITYPG,IGEO,ILEV,MAXMSS,NMIX,NM(4)
      INTEGER          MIX(NMIX,2)
      DOUBLE PRECISION DAMESH(-1:MAXMSH,4)
      INTEGER          ISPLT(MAXMSH,4)
      INTEGER          NMIXS,NMS(4)
      DOUBLE PRECISION DAMESS(-1:MAXMSS,4,2)
      INTEGER          ITSYM(4),NREGS,NSURS,NREGN,NSURN,NEREN
      INTEGER          IDREG(NREGS),IDSUR(NSURS)
*----
*  Local parameters
*----
      INTEGER          IOUT
      CHARACTER        NAMSBR*6
      PARAMETER       (IOUT=6,NAMSBR='NXTSGT')
      DOUBLE PRECISION DZERO,DONE,DDC,DCAOF
      PARAMETER       (DZERO=0.0D0,DONE=1.0D0,DDC=1.0D-3,
     >                 DCAOF=DONE+DDC)
*----
*  Local variables
*----
      INTEGER          NX ,NZ ,NRTP ,NRP ,NSTP ,NSP ,
     >                 NXS,NZS,NRTPS,NRPS,NSTPS,NSPS,
     >                 NZMX1,NZSMX1,NBSX,NBSZ,NZSR,NSPLAN
      INTEGER          IPLOC,IX,IXS,IZ,IZS,III,JJJ,
     >                 ISECT,IDMIX
      INTEGER          IOFZ,IOFZS,IOFS,IOFSS
      INTEGER          IODZ,IODHZ,IORHZ,IORZ,IRN,IRO,IRR,IRT,
     >                 ISTOP,ISBOT,IDS,IDV
      DOUBLE PRECISION DELTH,DELTH0,DDD
      CHARACTER        NAMREC*12
      INTEGER          IDIRR,IR,NR,NRS
      INTEGER          IDTRI,IGEN,IGENS,IOFT,IOFTS,IS,ISPZ,ITID,ITIDS,
     >                 NBS,NRR,NTL
      DOUBLE PRECISION DDI,DDO
*----
*  Allocatable arrays
*----
      INTEGER, ALLOCATABLE, DIMENSION(:,:) :: IREN,MIXS
*----
*  Data
*----
      CHARACTER        CLEV(2)*1
      SAVE             CLEV
      DATA             CLEV /'C','P'/
*----
*  Static variables used
*  before split
*  NX    =  mesh in x (from 0 to SIDE)
*  NZ    =  mesh in z (from zmin to zmax)
*  NR    =  radial mesh
*  NRTP  =  number of region in a triangle for each z plane
*  NRP   =  number of region in a z plane
*  NSTP  =  number of surfaces in a triangle for each z plane
*  NSP   =  number of surfaces in a z plane
*  after split
*  NXS   =  mesh in x (from 0 to SIDE)
*  NZS   =  mesh in z (from zmin to zmax)
*  NRS   =  radial mesh
*  NRTPS =  number of region in a triangle for each z plane
*  NRPS  =  number of region in a z plane
*  NSTPS =  number of surfaces in a triangle for each z plane
*  NSPS  =  number of surfaces in a z plane
*----
      ALLOCATE(IREN(2,NEREN),MIXS(NMIXS,2))
      MIXS(:NMIXS,:2)=0
      NR=NM(4)+1
      NRS=NMS(4)+1
      IDIRR=-99
      IF(ITYPG .EQ.  12 .OR. ITYPG .EQ. 13) THEN
        IDIRR=0
      ELSE IF(ITYPG .EQ.  26 .OR. ITYPG .EQ. 27) THEN  
        IDIRR=4
      ENDIF
      NX=NM(1)
      NZ=NM(3)
      NRTP=NX**2
      NRP=6*NRTP*NR
      NSTP=2*NX-1
      NSP=6*NSTP
      NXS=NMS(1)
      NZS=NMS(3)
      NRTPS=NXS**2
      NRPS=6*NRTPS*NRS
      NSTPS=2*NXS-1
      NSPS=6*NSTPS
*      write(6,*) 'NX,NZ,NRTP,NRP,NSTP,NSP,NXS,NZS,NRTPS,NRPS,NSTPS,NSPS'
*     >,NX,NZ,NRTP,NRP,NSTP,NSP,NXS,NZS,NRTPS,NRPS,NSTPS,NSPS
*----
*  Processing starts:
*  print routine openning output header if required
*  and initialize various parameters.
*----
      IPLOC=IPRINT
      IF(IPLOC .GE. 100) THEN
        WRITE(IOUT,6000) NAMSBR
        WRITE(IOUT,6002) ITYPG
        WRITE(IOUT,6010) NX,NZ
        WRITE(IOUT,6011) 'MESHH ='
        WRITE(IOUT,6012) (DAMESH(IX,1),IX=-1,2*NX)
        WRITE(IOUT,6011) 'SPLTH ='
        WRITE(IOUT,6013) ISPLT(1,1)
        IF(NZ .GT. 0) THEN
          WRITE(IOUT,6011) 'MESHZ ='
          WRITE(IOUT,6012) (DAMESH(IZ,3),IZ=-1,NZ)
          WRITE(IOUT,6011) 'SPLTZ ='
          WRITE(IOUT,6013) (ISPLT(IZ,3),IZ=1,NZ)
        ENDIF
        IF(IDIRR .EQ. 4) THEN
          WRITE(IOUT,6011) 'MESHR ='
          WRITE(IOUT,6012) (DAMESH(IR,4),IR=-1,NR)
          WRITE(IOUT,6011) 'SPLTR ='
          WRITE(IOUT,6013) (ISPLT(IR,4),IR=1,NR)
        ENDIF
        WRITE(IOUT,6033)
        WRITE(IOUT,6034)  (MIX(III,1),III=1,NMIX)
        WRITE(IOUT,6036)
        WRITE(IOUT,6034)  (MIX(III,2),III=1,NMIX)
      ENDIF
*      write(6,*) 'NX,NZ,NXS,NZS',NX,NZ,NXS,NZS
*      write(6,*) 'NREGS,NSURS',NREGS,NSURS
*----
*  Triangular mesh
*----
      NBSX=ABS(ISPLT(1,1))
*----
*  Note : last crown may have a width different
*  from the other crowns
*  Splitting is with respect to width of internal crowns
*  unless only one crown considered
*----
      IF(NX .EQ. 1) THEN
        DELTH0=(DAMESH(1,1)-DAMESH(0,1))/DBLE(NBSX)
        DELTH=DELTH0
      ELSE
        DELTH0=DAMESH(1,1)-DAMESH(0,1)
        DELTH=DAMESH(2,1)-DAMESH(1,1)
        DDD=DELTH-DELTH0
        DELTH=DELTH/DBLE(NBSX)
        IF(DDD .GT. DELTH) THEN
          WRITE(IOUT,9000) DELTH0,DELTH,DDD
          CALL XABORT(NAMSBR//
     >      ': Invalid SPLIT for HEXT and HEXTZ geometries')
        ENDIF
        DELTH0=DELTH-DDD
      ENDIF
      DAMESS(-1,1,1)=DAMESH(-1,1)
      DAMESS(0,1,1)=DAMESH(0,1)
      DAMESS(1,1,1)=DAMESS(0,1,1)+DELTH0
      III=1
      DO IXS=1,NBSX-1
        III=III+1
        DAMESS(III,1,1)=DAMESS(III-1,1,1)+DELTH
      ENDDO
      DO JJJ=2,2*NX-1
        DO IXS=1,NBSX
          III=III+1
          DAMESS(III,1,1)=DAMESS(III-1,1,1)+DELTH
        ENDDO
      ENDDO
      DO IXS=1,NBSX-1
        III=III+1
        DAMESS(III,1,1)=DAMESS(III-1,1,1)+DELTH
      ENDDO
      III=III+1
      DAMESS(III,1,1)=DAMESS(III-1,1,1)+DELTH0
*----
*  Y mesh identical to X mesh except for off center
*----
      DO IXS=-1,2*NXS
        DAMESS(IXS,2,1)=DAMESS(IXS,1,1)
      ENDDO
*----
*  Z mesh
*----
      IF(NZ .EQ. 0) THEN
        DAMESS(-1,3,1)=DZERO
        DAMESS(0,3,1)=DZERO
      ELSE
        DAMESS(-1,3,1)=DAMESH(-1,3)
        DAMESS(0,3,1)=DAMESH(0,3)
        III=0
        DO IZ=1,NZ
          NBSZ=ABS(ISPLT(IZ,3))
          DDD=(DAMESH(IZ,3)-DAMESH(IZ-1,3))/DBLE(NBSZ)
          DO IZS=1,NBSZ
            III=III+1
            DAMESS(III,3,1)=DAMESS(III-1,3,1)+DDD
          ENDDO
        ENDDO
      ENDIF
*----
* Radial mesh
*----
      IF(IDIRR .EQ. 4) THEN
        DAMESS(-1,IDIRR,1)=DAMESH(-1,IDIRR)
        DAMESS(0,IDIRR,1)=DAMESH(0,IDIRR)
        IGENS=0
        DO IGEN=1,NM(IDIRR)
          NBS=ISPLT(IGEN,IDIRR)
          IF(NBS .LT. 0) THEN
            NBS=-NBS
            DDI=DAMESH(IGEN-1,IDIRR)*DAMESH(IGEN-1,IDIRR)
            DDO=DAMESH(IGEN,IDIRR)*DAMESH(IGEN,IDIRR)
            DDD=(DDO-DDI)/DBLE(NBS)
            DO IS=1,NBS
              IGENS=IGENS+1
              DDO=DDI+DDD
              DAMESS(IGENS,IDIRR,1)=SQRT(DDO)
              DDI=DDO
            ENDDO
          ELSE
            DDD=(DAMESH(IGEN,IDIRR)-DAMESH(IGEN-1,IDIRR))/DBLE(NBS)
            DO IS=1,NBS
              IGENS=IGENS+1
              DAMESS(IGENS,IDIRR,1)=DAMESS(IGENS-1,IDIRR,1)+DDD
            ENDDO
          ENDIF
        ENDDO
      ENDIF
      IF(IPLOC .GE. 100) THEN
        WRITE(IOUT,6020) NXS,NZS
        WRITE(IOUT,6011) 'MESHH ='
        WRITE(IOUT,6012) (DAMESS(IX,1,1),IX=-1,2*NXS)
        IF(NZS .GT. 0) THEN
          WRITE(IOUT,6011) 'MESHZ ='
          WRITE(IOUT,6012) (DAMESS(IZ,3,1),IZ=-1,NZS)
        ENDIF
        IF(IDIRR .EQ. 4) THEN
          WRITE(IOUT,6011) 'MESHR ='
          WRITE(IOUT,6012) (DAMESS(IR,4,1),IR=-1,NR)
        ENDIF
      ENDIF
      IDREG(:NREGS)=0
      IDSUR(:NSURS)=0
*----
*  Loop over planes (3D)
*----
      NZMX1=MAX(1,NZ)
      NZSMX1=MAX(1,NZS)
*----
*  Regions
*  Mixture and global numbering
*----
      IZS=0
      DO IZ=1,NZMX1
        IF(NZ .EQ. 0) THEN
          NBSZ=1
        ELSE
          NBSZ=MAX(1,ISPLT(IZ,3))
        ENDIF
        DO ISPZ=1,NBSZ
          IOFZ=(IZ-1)*NRP
          IOFZS=IZS*NRPS
          IZS=IZS+1
*----
*  Loop over sectors
*----
          DO ISECT=1,6
            IOFS=(ISECT-1)*NRTP*NR
            IOFSS=(ISECT-1)*NRTPS*NRS
*----
*  Loop over lines
*----
            IOFT=IOFZ+IOFS
            IOFTS=IOFZS+IOFSS
            ITID=0
            ITIDS=0
            DO IX=1,NX
              NTL=2*IX-1
*----
*  For remaining lines
*  IREN(1,*) is original cell position on line
*  IREN(2,*) is number of times this cell is used on
*  each initial splitted mesh
*  (NBSX for right triangle and 0 for left triangle)
*----
*  Loop over all right triangles in line
*----
              DO III=2,2*IX-2,2
                IREN(1,III)=IOFT
                IREN(2,III)=NBSX
                IOFT=IOFT+NR
              ENDDO
*----
*  Loop over all left triangles in line
*----
              DO III=1,2*IX-1,2
                IREN(1,III)=IOFT
                IREN(2,III)=0
                IOFT=IOFT+NR
              ENDDO
*      write(6,'(A6,2X,3I10)')
*     >     ('IREN =',III,IREN(1,III),IREN(2,III),III=1,2*IX-1)
              DO IXS=1,NBSX
*----
*  Process all triangles on coarse line
*  Extract only new (discretized) right triangles on sub-line
*  In first step (IXS=1), only coarse right triangles considered
*----
                DO III=1,2*IX-1
                  IDTRI=IREN(1,III)
                  DO JJJ=1,IREN(2,III)
                    DO IR=1,NM(4)
                      NRR=MAX(1,ABS(ISPLT(IR,4)))
                      IDMIX=IDTRI+IR
                      DO IRR=1,NRR
                        IOFTS=IOFTS+1
*      write(6,*) 'SPLITTING R',IZ,ISPZ,ISECT,IX,IXS,IR,IRR,IOFTS
                        MIXS(IOFTS,1)=MIX(IDMIX,1)
                        MIXS(IOFTS,2)=MIX(IDMIX,2)
                        IDREG(IOFTS)=IOFTS
                      ENDDO
                    ENDDO
                    IDMIX=IDTRI+NM(4)+1
                    IOFTS=IOFTS+1
*      write(6,*) 'SPLITTING R',IZ,ISPZ,ISECT,IX,IXS,NM(4),NRR+1,IOFTS
                    MIXS(IOFTS,1)=MIX(IDMIX,1)
                    MIXS(IOFTS,2)=MIX(IDMIX,2)
                    IDREG(IOFTS)=IOFTS
                  ENDDO
                ENDDO
*----
*  Prepare for right triangles on sub-line
*  1) Coarse right triangles
*  2) Coarse left triangles
*----
                DO III=2,2*IX-2,2
                  IREN(2,III)=NBSX-1
                ENDDO
                DO III=1,2*IX-1,2
                  IREN(2,III)=IREN(2,III)+1
                ENDDO
*      write(6,'(A6,2X,3I10)')
*     >     ('IREN =',III,IREN(1,III),IREN(2,III),III=1,2*IX-1)
*----
*  Process again all triangles on coarse line
*  Extract only new (discretized) left triangles on sub-line
*  In last step (IXS=NBXS), only coarse left triangles considered
*----
                DO III=1,2*IX-1
                  IDTRI=IREN(1,III)
                  DO JJJ=1,IREN(2,III)
                    DO IR=1,NM(4)
                      NRR=MAX(1,ABS(ISPLT(IR,4)))
                      IDMIX=IDTRI+IR
                      DO IRR=1,NRR
                        IOFTS=IOFTS+1
*      write(6,*) 'SPLITTING L',IZ,ISPZ,ISECT,IX,IXS,IR,IRR,IOFTS
                        MIXS(IOFTS,1)=MIX(IDMIX,1)
                        MIXS(IOFTS,2)=MIX(IDMIX,2)
                        IDREG(IOFTS)=IOFTS
                      ENDDO
                    ENDDO
                    IDMIX=IDTRI+NM(4)+1
                    IOFTS=IOFTS+1
*      write(6,*) 'SPLITTING L',IZ,ISPZ,ISECT,IX,IXS,NM(4),NRR+1,IOFTS
                    MIXS(IOFTS,1)=MIX(IDMIX,1)
                    MIXS(IOFTS,2)=MIX(IDMIX,2)
                    IDREG(IOFTS)=IOFTS
                  ENDDO
                ENDDO
              ENDDO
            ENDDO
          ENDDO
        ENDDO
      ENDDO
*----
*  Save MESH and mixture information on IPTRK
*----
      IF(NXS .GT. 0) THEN
        WRITE(NAMREC,'(A1,I8.8,A3)') CLEV(ILEV),IGEO,'SMX'
        CALL LCMPUT(IPTRK,NAMREC,(2*NXS+2),4,DAMESS(-1,1,1))
        WRITE(NAMREC,'(A1,I8.8,A3)') CLEV(ILEV),IGEO,'SMY'
        CALL LCMPUT(IPTRK,NAMREC,(2*NXS+2),4,DAMESS(-1,2,1))
      ENDIF
      IF(NZS .GT. 0) THEN
        WRITE(NAMREC,'(A1,I8.8,A3)') CLEV(ILEV),IGEO,'SMZ'
        CALL LCMPUT(IPTRK,NAMREC,(NZS+2),4,DAMESS(-1,3,1))
      ENDIF
      IF(IDIRR .EQ. 4) THEN
        WRITE(NAMREC,'(A1,I8.8,A3)') CLEV(ILEV),IGEO,'SMR'
        CALL LCMPUT(IPTRK,NAMREC,(NMS(4)+2),4,DAMESS(-1,4,1))
      ENDIF
      WRITE(NAMREC,'(A1,I8.8,A3)') CLEV(ILEV),IGEO,'MIX'
      CALL LCMPUT(IPTRK,NAMREC,NMIXS,1,MIXS(1,1))
      WRITE(NAMREC,'(A1,I8.8,A3)') CLEV(ILEV),IGEO,'HOM'
      CALL LCMPUT(IPTRK,NAMREC,NMIXS,1,MIXS(1,2))
      IF(IPLOC .GE. 100) THEN
        WRITE(IOUT,6033)
        WRITE(IOUT,6034)  (MIXS(III,1),III=1,NREGS)
        WRITE(IOUT,6036)
        WRITE(IOUT,6034)  (MIXS(III,2),III=1,NREGS)
        WRITE(IOUT,6030) 'before symmetries   '
        WRITE(IOUT,6034)  (IDREG(III),III=1,NREGS)
      ENDIF
*----
*  Hexagnal surfaces
*----
      ISBOT=0
      DO IZS=1,NZSMX1
        DO ISECT=1,6
          DO III=1,NXS-1
            ISBOT=ISBOT+1
            IDSUR(ISBOT)=ISBOT
          ENDDO
          DO III=1,NXS
            ISBOT=ISBOT+1
            IDSUR(ISBOT)=ISBOT
          ENDDO
        ENDDO
      ENDDO
      IF(NZ .GT. 0) THEN
*----
*  Z- and Z+ surfaces
*----
        ISTOP=ISBOT+NRPS
        DO III=1,NRPS
          ISBOT=ISBOT+1
          IDSUR(ISBOT)=ISBOT
          ISTOP=ISTOP+1
          IDSUR(ISTOP)=ISTOP
        ENDDO
      ENDIF
      IF(IPLOC .GE. 100) THEN
        WRITE(IOUT,6032) 'before symmetries   '
        WRITE(IOUT,6034)  (IDSUR(III),III=1,NSURS)
        WRITE(IOUT,6035)   ITSYM
      ENDIF
*----
*  Z symmetry
*----
      IF(ABS(ITSYM(3)) .EQ. 1) THEN
*----
*  1- Eliminate reflected regions
*----
        NZSR=NZS/2
        DO IZS=1,NZSR
          IODZ=(IZS-1)*NRPS
          IORZ=(NZS-IZS)*NRPS
          DO III=1,NRPS
            IODHZ=IODZ+III
            IORHZ=IORZ+III
            IDREG(IORHZ)=-ABS(IDREG(IODHZ))
          ENDDO
        ENDDO
*----
*  2- Eliminate reflected hexagonal surfaces
*----
        NSPLAN=12*NXS-6
        DO IZS=1,NZSR
          IODZ=(IZS-1)*NSPLAN
          IORZ=(NZS-IZS)*NSPLAN
          DO III=1,NSPLAN
            IODHZ=IODZ+III
            IORHZ=IORZ+III
            IDSUR(IORHZ)=-ABS(IDSUR(IODHZ))
          ENDDO
        ENDDO
*----
*  4- Eliminate reflected Z- surfaces
*----
        ISBOT=NSPLAN*NZSR
        ISTOP=ISBOT+NRPS
        DO III=1,NRPS
          ISBOT=ISBOT+1
          ISTOP=ISTOP+1
          IDSUR(ISTOP)=-ABS(IDSUR(ISBOT))
        ENDDO
      ENDIF
*----
*  Renumber regions
*----
      IRN=0
      DO IRO=1,NREGS
        IDV=IDREG(IRO)
        IF(IDV .GT. 0) THEN
          IRN=IRN+1
          IREN(1,IRN)=IDV
          DO IRT=1,IRN-1
            IF(IDV .LT. IREN(1,IRT)) THEN
              DO IRR=IRN-1,IRT,-1
                IREN(1,IRR+1)=IREN(1,IRR)
              ENDDO
              IREN(1,IRT)=IDV
            ENDIF
          ENDDO
        ENDIF
      ENDDO
      NREGN=IRN
      DO IRN=1,NREGN
        IDV=IREN(1,IRN)
        DO IRT=1,NREGS
          IF(IDREG(IRT) .EQ. IDV ) THEN
            IDREG(IRT)=IRN
          ELSE IF(IDREG(IRT) .EQ. -IDV ) THEN
            IDREG(IRT)=-IRN
          ENDIF
        ENDDO
      ENDDO
*----
*  Renumber surfaces
*----
      IRN=0
      DO IRO=1,NSURS
        IDS=IDSUR(IRO)
        IF(IDS .GT. 0) THEN
          IRN=IRN+1
          IREN(1,IRN)=IDS
          DO IRT=1,IRN-1
            IF(IDS .LT. IREN(1,IRT)) THEN
              DO IRR=IRN-1,IRT,-1
                IREN(1,IRR+1)=IREN(1,IRR)
              ENDDO
              IREN(1,IRT)=IDS
            ENDIF
          ENDDO
        ENDIF
      ENDDO
      NSURN=IRN
      DO IRN=1,NSURN
        IDS=IREN(1,IRN)
        DO IRT=1,NSURS
          IF(IDSUR(IRT) .EQ. IDS ) THEN
            IDSUR(IRT)=IRN
          ELSE IF(IDSUR(IRT) .EQ. -IDS ) THEN
            IDSUR(IRT)=-IRN
          ENDIF
        ENDDO
      ENDDO
*----
*  Processing finished:
*  print routine closing output header if required
*  and return
*----
      IF(IPLOC .GE. 100) THEN
        WRITE(IOUT,6010) NXS,NZS
        IF(NXS .GT. 0) THEN
          WRITE(IOUT,6011) 'MESHH ='
          WRITE(IOUT,6012) (DAMESS(IX,1,1),IX=-1,2*NXS)
        ENDIF
        IF(NZS .GT. 0) THEN
          WRITE(IOUT,6011) 'MESHZ ='
          WRITE(IOUT,6012) (DAMESS(IX,3,1),IX=-1,NZS)
        ENDIF
        WRITE(IOUT,6030) 'after symmetries    '
        WRITE(IOUT,6034) (IDREG(IDV),IDV=1,NREGS)
        WRITE(IOUT,6032) 'after symmetries    '
        WRITE(IOUT,6034) (IDSUR(IDS),IDS=1,NSURS)
        WRITE(IOUT,6001) NAMSBR
      ENDIF
      DEALLOCATE(MIXS,IREN)
      RETURN
*----
*  Output formats
*----
 6000 FORMAT('(* Output from --',A6,'-- follows ')
 6001 FORMAT('   Output from --',A6,'-- completed *)')
 6002 FORMAT(' Type of geometry = ',I5)
 6010 FORMAT(1X,'DIMENSIONS =',2I10/1X,'ORIGINAL MESH ')
 6011 FORMAT(1X,A7)
 6012 FORMAT(5F20.10)
 6013 FORMAT(5I20)
 6020 FORMAT(1X,'DIMENSIONS =',2I10/1X,'SPLITTED MESH ')
 6030 FORMAT(' Regions ID ',A20)
 6032 FORMAT(' Surfaces ID ',A20)
 6033 FORMAT(' Mixtures ')
 6034 FORMAT(5I15)
 6035 FORMAT('Symmetries =',4I15)
 6036 FORMAT(' Virtual mixtures ')
 9000 FORMAT(' Problem with split in HEXT or HEXTZ geometry'//
     >3F20.10)
      END