/[lmdze]/trunk/IOIPSL/histwrite.f
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revision 31 by guez, Thu Apr 1 14:59:19 2010 UTC revision 62 by guez, Thu Jul 26 14:37:37 2012 UTC
# Line 4  MODULE histwrite_m Line 4  MODULE histwrite_m
4    
5    implicit none    implicit none
6    
   PRIVATE  
   PUBLIC histwrite  
   
7    INTERFACE histwrite    INTERFACE histwrite
8       ! The "histwrite" procedures give the data to the input-output system.       ! The "histwrite" procedures give the data to the input-output system.
9       ! They trigger the operations to be performed and the writing to       ! They trigger the operations to be performed and the writing to
# Line 16  MODULE histwrite_m Line 13  MODULE histwrite_m
13       ! later stage we can call different operations and write subroutines       ! later stage we can call different operations and write subroutines
14       ! for the REAL and INTEGER interfaces.       ! for the REAL and INTEGER interfaces.
15    
16       ! INTEGER, INTENT(IN):: pfileid       ! INTEGER, INTENT(IN):: fileid
17       ! The ID of the file on which this variable is to be written.       ! The ID of the file on which this variable is to be written.
18       ! The variable should have been defined in this file before.       ! The variable should have been defined in this file before.
19    
20       ! CHARACTER(LEN=*), INTENT(IN):: pvarname       ! CHARACTER(LEN=*), INTENT(IN):: varname
21       ! short name of the variable       ! short name of the variable
22    
23       ! INTEGER, INTENT(IN):: pitau       ! INTEGER, INTENT(IN):: itau
24       ! current timestep       ! current timestep
25    
26       ! REAL, INTENT(IN):: pdata(:) or (:, :) or (:, :, :)       ! REAL, INTENT(IN):: pdata(:) or (:, :) or (:, :, :)
27       ! values of the variable       ! values of the variable
28    
      ! INTEGER, INTENT(IN):: nbindex  
      ! number of indices provided  
      ! If it is equal to the size of the full field as provided in histdef  
      ! then nothing is done.  
   
      ! INTEGER, INTENT(IN):: nindex(nbindex)  
      ! The indices used to expand the variable (pdata) onto the full field  
   
29       ! The difference between the procedures is the rank of "pdata".       ! The difference between the procedures is the rank of "pdata".
30    
31       MODULE PROCEDURE histwrite_r1d, histwrite_r2d, histwrite_r3d       MODULE PROCEDURE histwrite_r1d, histwrite_r2d, histwrite_r3d
32    END INTERFACE    END INTERFACE
33    
34      PRIVATE histwrite_r1d, histwrite_r2d, histwrite_r3d
35    
36  CONTAINS  CONTAINS
37    
38    SUBROUTINE histwrite_r1d(pfileid, pvarname, pitau, pdata)    SUBROUTINE histwrite_r1d(fileid, varname, itau, pdata)
39    
40      USE errioipsl, ONLY : histerr      USE errioipsl, ONLY: histerr
41      use calendar, only: isittime      use calendar, only: isittime
42      USE mathelp, ONLY : mathop      USE mathop_m, ONLY: mathop
43      use histcom_var      USE histcom_var, ONLY: datasz_in, datasz_max, date0, deltat, &
44             freq_opp, freq_wrt, fuchnbout, last_opp, last_opp_chk, last_wrt, &
45      INTEGER, INTENT(IN) :: pfileid, pitau           last_wrt_chk, missing_val, nbopp, nb_files, scal, scsize, sopps, &
46      REAL, INTENT(IN) :: pdata(:)           topp
47      CHARACTER(LEN=*), INTENT(IN) :: pvarname      use histvar_seq_m, only: histvar_seq
48        use histwrite_real_m, only: histwrite_real
49    
50        INTEGER, INTENT(IN):: fileid, itau
51        CHARACTER(LEN=*), INTENT(IN):: varname
52        REAL, INTENT(IN):: pdata(:)
53    
54      ! Variables local to the procedure:      ! Variables local to the procedure:
55      integer nbindex, nindex(size(pdata))      integer nbindex, nindex(size(pdata))
56      LOGICAL :: do_oper, do_write, largebuf      LOGICAL:: do_oper, do_write, largebuf
57      INTEGER :: varid, io, nbpt_in, nbpt_out      INTEGER:: varid, io, nbpt_in, nbpt_out
58      REAL, ALLOCATABLE, SAVE :: buff_tmp(:)      REAL, ALLOCATABLE, SAVE:: buff_tmp(:)
59      INTEGER, SAVE :: buff_tmp_sz      INTEGER, SAVE:: buff_tmp_sz
60      CHARACTER(LEN=7) :: tmp_opp      CHARACTER(LEN=7):: tmp_opp
61    
62      !--------------------------------------------------------------------      !--------------------------------------------------------------------
63    
# Line 69  CONTAINS Line 65  CONTAINS
65      nindex = 0      nindex = 0
66    
67      ! 1.0 Try to catch errors like specifying the wrong file ID.      ! 1.0 Try to catch errors like specifying the wrong file ID.
     !     Thanks Marine for showing us what errors users can make !  
68    
69      IF ( (pfileid < 1).OR.(pfileid > nb_files) ) THEN      IF ( (fileid < 1).OR.(fileid > nb_files) ) THEN
70         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
71              &    'Illegal file ID in the histwrite of variable', pvarname, ' ')              &    'Illegal file ID in the histwrite of variable', varname, ' ')
72      ENDIF      ENDIF
73    
74      ! 1.1 Find the id of the variable to be written and the real time      ! 1.1 Find the id of the variable to be written and the real time
75    
76      CALL histvar_seq (pfileid, pvarname, varid)      CALL histvar_seq (fileid, varname, varid)
77    
78      ! 2.0 do nothing for never operation      ! 2.0 do nothing for never operation
79    
80      tmp_opp = topp(pfileid, varid)      tmp_opp = topp(fileid, varid)
81    
82      IF (TRIM(tmp_opp) == "never") THEN      IF (TRIM(tmp_opp) == "never") THEN
83         last_opp_chk(pfileid, varid) = -99         last_opp_chk(fileid, varid) = -99
84         last_wrt_chk(pfileid, varid) = -99         last_wrt_chk(fileid, varid) = -99
85      ENDIF      ENDIF
86    
87      ! 3.0 We check if we need to do an operation      ! 3.0 We check if we need to do an operation
88    
89      IF (last_opp_chk(pfileid, varid) == pitau) THEN      IF (last_opp_chk(fileid, varid) == itau) THEN
90         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
91              &    'This variable as already been analysed at the present', &              &    'This variable as already been analysed at the present', &
92              &    'time step', ' ')              &    'time step', ' ')
93      ENDIF      ENDIF
94    
95      CALL isittime &      CALL isittime(itau, date0(fileid), deltat(fileid), &
96           &  (pitau, date0(pfileid), deltat(pfileid), freq_opp(pfileid, varid), &           freq_opp(fileid, varid), last_opp(fileid, varid), &
97           &   last_opp(pfileid, varid), last_opp_chk(pfileid, varid), do_oper)           last_opp_chk(fileid, varid), do_oper)
98    
99      ! 4.0 We check if we need to write the data      ! 4.0 We check if we need to write the data
100    
101      IF (last_wrt_chk(pfileid, varid) == pitau) THEN      IF (last_wrt_chk(fileid, varid) == itau) THEN
102         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
103              &    'This variable as already been written for the present', &              &    'This variable as already been written for the present', &
104              &    'time step', ' ')              &    'time step', ' ')
105      ENDIF      ENDIF
106    
107      CALL isittime &      CALL isittime &
108           &  (pitau, date0(pfileid), deltat(pfileid), freq_wrt(pfileid, varid), &           &  (itau, date0(fileid), deltat(fileid), freq_wrt(fileid, varid), &
109           &   last_wrt(pfileid, varid), last_wrt_chk(pfileid, varid), do_write)           &   last_wrt(fileid, varid), last_wrt_chk(fileid, varid), do_write)
110    
111      ! 5.0 histwrite called      ! 5.0 histwrite called
112    
# Line 119  CONTAINS Line 114  CONTAINS
114    
115         !- 5.1 Get the sizes of the data we will handle         !- 5.1 Get the sizes of the data we will handle
116    
117         IF (datasz_in(pfileid, varid, 1) <= 0) THEN         IF (datasz_in(fileid, varid, 1) <= 0) THEN
118            !--- There is the risk here that the user has over-sized the array.            !--- There is the risk here that the user has over-sized the array.
119            !--- But how can we catch this ?            !--- But how can we catch this ?
120            !--- In the worst case we will do impossible operations            !--- In the worst case we will do impossible operations
121            !--- on part of the data !            !--- on part of the data !
122            datasz_in(pfileid, varid, 1) = SIZE(pdata)            datasz_in(fileid, varid, 1) = SIZE(pdata)
123            datasz_in(pfileid, varid, 2) = -1            datasz_in(fileid, varid, 2) = -1
124            datasz_in(pfileid, varid, 3) = -1            datasz_in(fileid, varid, 3) = -1
125         ENDIF         ENDIF
126    
127         !- 5.2 The maximum size of the data will give the size of the buffer         !- 5.2 The maximum size of the data will give the size of the buffer
128    
129         IF (datasz_max(pfileid, varid) <= 0) THEN         IF (datasz_max(fileid, varid) <= 0) THEN
130            largebuf = .FALSE.            largebuf = .FALSE.
131            DO io=1, nbopp(pfileid, varid)            DO io=1, nbopp(fileid, varid)
132               IF (INDEX(fuchnbout, sopps(pfileid, varid, io)) > 0) THEN               IF (INDEX(fuchnbout, sopps(fileid, varid, io)) > 0) THEN
133                  largebuf = .TRUE.                  largebuf = .TRUE.
134               ENDIF               ENDIF
135            ENDDO            ENDDO
136            IF (largebuf) THEN            IF (largebuf) THEN
137               datasz_max(pfileid, varid) = &               datasz_max(fileid, varid) = &
138                    &        scsize(pfileid, varid, 1) &                    &        scsize(fileid, varid, 1) &
139                    &       *scsize(pfileid, varid, 2) &                    &       *scsize(fileid, varid, 2) &
140                    &       *scsize(pfileid, varid, 3)                    &       *scsize(fileid, varid, 3)
141            ELSE            ELSE
142               datasz_max(pfileid, varid) = &               datasz_max(fileid, varid) = &
143                    &        datasz_in(pfileid, varid, 1)                    &        datasz_in(fileid, varid, 1)
144            ENDIF            ENDIF
145         ENDIF         ENDIF
146    
147         IF (.NOT.ALLOCATED(buff_tmp)) THEN         IF (.NOT.ALLOCATED(buff_tmp)) THEN
148            ALLOCATE (buff_tmp(datasz_max(pfileid, varid)))            ALLOCATE (buff_tmp(datasz_max(fileid, varid)))
149            buff_tmp_sz = datasz_max(pfileid, varid)            buff_tmp_sz = datasz_max(fileid, varid)
150         ELSE IF (datasz_max(pfileid, varid) > buff_tmp_sz) THEN         ELSE IF (datasz_max(fileid, varid) > buff_tmp_sz) THEN
151            DEALLOCATE (buff_tmp)            DEALLOCATE (buff_tmp)
152            ALLOCATE (buff_tmp(datasz_max(pfileid, varid)))            ALLOCATE (buff_tmp(datasz_max(fileid, varid)))
153            buff_tmp_sz = datasz_max(pfileid, varid)            buff_tmp_sz = datasz_max(fileid, varid)
154         ENDIF         ENDIF
155    
156         !- We have to do the first operation anyway.         !- We have to do the first operation anyway.
157         !- Thus we do it here and change the ranke         !- Thus we do it here and change the ranke
158         !- of the data at the same time. This should speed up things.         !- of the data at the same time. This should speed up things.
159    
160         nbpt_in = datasz_in(pfileid, varid, 1)         nbpt_in = datasz_in(fileid, varid, 1)
161         nbpt_out = datasz_max(pfileid, varid)         nbpt_out = datasz_max(fileid, varid)
162         CALL mathop (sopps(pfileid, varid, 1), nbpt_in, pdata, &         CALL mathop (sopps(fileid, varid, 1), nbpt_in, pdata, &
163              &               missing_val, nbindex, nindex, &              &               missing_val, nbindex, nindex, &
164              &               scal(pfileid, varid, 1), nbpt_out, buff_tmp)              &               scal(fileid, varid, 1), nbpt_out, buff_tmp)
165         CALL histwrite_real (pfileid, varid, pitau, nbpt_out, &         CALL histwrite_real (fileid, varid, itau, nbpt_out, &
166              &            buff_tmp, nbindex, nindex, do_oper, do_write)              &            buff_tmp, nbindex, nindex, do_oper, do_write)
167      ENDIF      ENDIF
168    
169      ! 6.0 Manage time steps      ! 6.0 Manage time steps
170    
171      IF ((TRIM(tmp_opp) /= "once").AND.(TRIM(tmp_opp) /= "never")) THEN      IF ((TRIM(tmp_opp) /= "once").AND.(TRIM(tmp_opp) /= "never")) THEN
172         last_opp_chk(pfileid, varid) = pitau         last_opp_chk(fileid, varid) = itau
173         last_wrt_chk(pfileid, varid) = pitau         last_wrt_chk(fileid, varid) = itau
174      ELSE      ELSE
175         last_opp_chk(pfileid, varid) = -99         last_opp_chk(fileid, varid) = -99
176         last_wrt_chk(pfileid, varid) = -99         last_wrt_chk(fileid, varid) = -99
177      ENDIF      ENDIF
178      !--------------------------  
179    END SUBROUTINE histwrite_r1d    END SUBROUTINE histwrite_r1d
180    
181    !===    !************************************************************************
182    
183    SUBROUTINE histwrite_r2d (pfileid, pvarname, pitau, pdata)    SUBROUTINE histwrite_r2d (fileid, varname, itau, pdata)
     !--------------------------------------------------------------------  
184    
185      use calendar, only: isittime      use calendar, only: isittime
186      USE errioipsl, ONLY : histerr      USE errioipsl, ONLY: histerr
187      USE mathelp, ONLY : mathop      USE mathop_m, ONLY: mathop
188      use histcom_var      USE histcom_var, ONLY: datasz_in, datasz_max, date0, deltat, &
189             freq_opp, freq_wrt, fuchnbout, last_opp, last_opp_chk, last_wrt, &
190      INTEGER, INTENT(IN) :: pfileid, pitau           last_wrt_chk, missing_val, nbopp, nb_files, scal, scsize, sopps, &
191      REAL, DIMENSION(:, :), INTENT(IN) :: pdata           topp
192      CHARACTER(LEN=*), INTENT(IN) :: pvarname      use histvar_seq_m, only: histvar_seq
193        use histwrite_real_m, only: histwrite_real
194    
195        INTEGER, INTENT(IN):: fileid, itau
196        REAL, INTENT(IN):: pdata(:, :)
197        CHARACTER(LEN=*), INTENT(IN):: varname
198    
199      integer nbindex, nindex(size(pdata))      integer nbindex, nindex(size(pdata))
200      LOGICAL :: do_oper, do_write, largebuf      LOGICAL:: do_oper, do_write, largebuf
201      INTEGER :: varid, io, nbpt_in(1:2), nbpt_out      INTEGER:: varid, io, nbpt_in(1:2), nbpt_out
202      REAL, ALLOCATABLE, SAVE :: buff_tmp(:)      REAL, ALLOCATABLE, SAVE:: buff_tmp(:)
203      INTEGER, SAVE :: buff_tmp_sz      INTEGER, SAVE:: buff_tmp_sz
204      CHARACTER(LEN=7) :: tmp_opp      CHARACTER(LEN=7):: tmp_opp
205    
206      !--------------------------------------------------------------------      !--------------------------------------------------------------------
207    
# Line 210  CONTAINS Line 209  CONTAINS
209      nindex = 0      nindex = 0
210    
211      ! 1.0 Try to catch errors like specifying the wrong file ID.      ! 1.0 Try to catch errors like specifying the wrong file ID.
     !     Thanks Marine for showing us what errors users can make !  
212    
213      IF ( (pfileid < 1).OR.(pfileid > nb_files) ) THEN      IF ( (fileid < 1).OR.(fileid > nb_files) ) THEN
214         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
215              &    'Illegal file ID in the histwrite of variable', pvarname, ' ')              &    'Illegal file ID in the histwrite of variable', varname, ' ')
216      ENDIF      ENDIF
217    
218      ! 1.1 Find the id of the variable to be written and the real time      ! 1.1 Find the id of the variable to be written and the real time
219    
220      CALL histvar_seq (pfileid, pvarname, varid)      CALL histvar_seq (fileid, varname, varid)
221    
222      ! 2.0 do nothing for never operation      ! 2.0 do nothing for never operation
223    
224      tmp_opp = topp(pfileid, varid)      tmp_opp = topp(fileid, varid)
225    
226      IF (TRIM(tmp_opp) == "never") THEN      IF (TRIM(tmp_opp) == "never") THEN
227         last_opp_chk(pfileid, varid) = -99         last_opp_chk(fileid, varid) = -99
228         last_wrt_chk(pfileid, varid) = -99         last_wrt_chk(fileid, varid) = -99
229      ENDIF      ENDIF
230    
231      ! 3.0 We check if we need to do an operation      ! 3.0 We check if we need to do an operation
232    
233      IF (last_opp_chk(pfileid, varid) == pitau) THEN      IF (last_opp_chk(fileid, varid) == itau) THEN
234         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
235              &    'This variable as already been analysed at the present', &              &    'This variable as already been analysed at the present', &
236              &    'time step', ' ')              &    'time step', ' ')
237      ENDIF      ENDIF
238    
239      CALL isittime &      CALL isittime &
240           &  (pitau, date0(pfileid), deltat(pfileid), freq_opp(pfileid, varid), &           &  (itau, date0(fileid), deltat(fileid), freq_opp(fileid, varid), &
241           &   last_opp(pfileid, varid), last_opp_chk(pfileid, varid), do_oper)           &   last_opp(fileid, varid), last_opp_chk(fileid, varid), do_oper)
242    
243      ! 4.0 We check if we need to write the data      ! 4.0 We check if we need to write the data
244    
245      IF (last_wrt_chk(pfileid, varid) == pitau) THEN      IF (last_wrt_chk(fileid, varid) == itau) THEN
246         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
247              &    'This variable as already been written for the present', &              &    'This variable as already been written for the present', &
248              &    'time step', ' ')              &    'time step', ' ')
249      ENDIF      ENDIF
250    
251      CALL isittime &      CALL isittime &
252           &  (pitau, date0(pfileid), deltat(pfileid), freq_wrt(pfileid, varid), &           &  (itau, date0(fileid), deltat(fileid), freq_wrt(fileid, varid), &
253           &   last_wrt(pfileid, varid), last_wrt_chk(pfileid, varid), do_write)           &   last_wrt(fileid, varid), last_wrt_chk(fileid, varid), do_write)
254    
255      ! 5.0 histwrite called      ! 5.0 histwrite called
256    
# Line 260  CONTAINS Line 258  CONTAINS
258    
259         !- 5.1 Get the sizes of the data we will handle         !- 5.1 Get the sizes of the data we will handle
260    
261         IF (datasz_in(pfileid, varid, 1) <= 0) THEN         IF (datasz_in(fileid, varid, 1) <= 0) THEN
262            !--- There is the risk here that the user has over-sized the array.            !--- There is the risk here that the user has over-sized the array.
263            !--- But how can we catch this ?            !--- But how can we catch this ?
264            !--- In the worst case we will do impossible operations            !--- In the worst case we will do impossible operations
265            !--- on part of the data !            !--- on part of the data !
266            datasz_in(pfileid, varid, 1) = SIZE(pdata, DIM=1)            datasz_in(fileid, varid, 1) = SIZE(pdata, DIM=1)
267            datasz_in(pfileid, varid, 2) = SIZE(pdata, DIM=2)            datasz_in(fileid, varid, 2) = SIZE(pdata, DIM=2)
268            datasz_in(pfileid, varid, 3) = -1            datasz_in(fileid, varid, 3) = -1
269         ENDIF         ENDIF
270    
271         !- 5.2 The maximum size of the data will give the size of the buffer         !- 5.2 The maximum size of the data will give the size of the buffer
272    
273         IF (datasz_max(pfileid, varid) <= 0) THEN         IF (datasz_max(fileid, varid) <= 0) THEN
274            largebuf = .FALSE.            largebuf = .FALSE.
275            DO io=1, nbopp(pfileid, varid)            DO io=1, nbopp(fileid, varid)
276               IF (INDEX(fuchnbout, sopps(pfileid, varid, io)) > 0) THEN               IF (INDEX(fuchnbout, sopps(fileid, varid, io)) > 0) THEN
277                  largebuf = .TRUE.                  largebuf = .TRUE.
278               ENDIF               ENDIF
279            ENDDO            ENDDO
280            IF (largebuf) THEN            IF (largebuf) THEN
281               datasz_max(pfileid, varid) = &               datasz_max(fileid, varid) = &
282                    &        scsize(pfileid, varid, 1) &                    &        scsize(fileid, varid, 1) &
283                    &       *scsize(pfileid, varid, 2) &                    &       *scsize(fileid, varid, 2) &
284                    &       *scsize(pfileid, varid, 3)                    &       *scsize(fileid, varid, 3)
285            ELSE            ELSE
286               datasz_max(pfileid, varid) = &               datasz_max(fileid, varid) = &
287                    &        datasz_in(pfileid, varid, 1) &                    &        datasz_in(fileid, varid, 1) &
288                    &       *datasz_in(pfileid, varid, 2)                    &       *datasz_in(fileid, varid, 2)
289            ENDIF            ENDIF
290         ENDIF         ENDIF
291    
292         IF (.NOT.ALLOCATED(buff_tmp)) THEN         IF (.NOT.ALLOCATED(buff_tmp)) THEN
293            ALLOCATE (buff_tmp(datasz_max(pfileid, varid)))            ALLOCATE (buff_tmp(datasz_max(fileid, varid)))
294            buff_tmp_sz = datasz_max(pfileid, varid)            buff_tmp_sz = datasz_max(fileid, varid)
295         ELSE IF (datasz_max(pfileid, varid) > buff_tmp_sz) THEN         ELSE IF (datasz_max(fileid, varid) > buff_tmp_sz) THEN
296            DEALLOCATE (buff_tmp)            DEALLOCATE (buff_tmp)
297            ALLOCATE (buff_tmp(datasz_max(pfileid, varid)))            ALLOCATE (buff_tmp(datasz_max(fileid, varid)))
298            buff_tmp_sz = datasz_max(pfileid, varid)            buff_tmp_sz = datasz_max(fileid, varid)
299         ENDIF         ENDIF
300    
301         !- We have to do the first operation anyway.         !- We have to do the first operation anyway.
302         !- Thus we do it here and change the ranke         !- Thus we do it here and change the ranke
303         !- of the data at the same time. This should speed up things.         !- of the data at the same time. This should speed up things.
304    
305         nbpt_in(1:2) = datasz_in(pfileid, varid, 1:2)         nbpt_in(1:2) = datasz_in(fileid, varid, 1:2)
306         nbpt_out = datasz_max(pfileid, varid)         nbpt_out = datasz_max(fileid, varid)
307         CALL mathop (sopps(pfileid, varid, 1), nbpt_in, pdata, &         CALL mathop (sopps(fileid, varid, 1), nbpt_in, pdata, &
308              &               missing_val, nbindex, nindex, &              &               missing_val, nbindex, nindex, &
309              &               scal(pfileid, varid, 1), nbpt_out, buff_tmp)              &               scal(fileid, varid, 1), nbpt_out, buff_tmp)
310         CALL histwrite_real (pfileid, varid, pitau, nbpt_out, &         CALL histwrite_real (fileid, varid, itau, nbpt_out, &
311              &            buff_tmp, nbindex, nindex, do_oper, do_write)              &            buff_tmp, nbindex, nindex, do_oper, do_write)
312      ENDIF      ENDIF
313    
314      ! 6.0 Manage time steps      ! 6.0 Manage time steps
315    
316      IF ((TRIM(tmp_opp) /= "once").AND.(TRIM(tmp_opp) /= "never")) THEN      IF ((TRIM(tmp_opp) /= "once").AND.(TRIM(tmp_opp) /= "never")) THEN
317         last_opp_chk(pfileid, varid) = pitau         last_opp_chk(fileid, varid) = itau
318         last_wrt_chk(pfileid, varid) = pitau         last_wrt_chk(fileid, varid) = itau
319      ELSE      ELSE
320         last_opp_chk(pfileid, varid) = -99         last_opp_chk(fileid, varid) = -99
321         last_wrt_chk(pfileid, varid) = -99         last_wrt_chk(fileid, varid) = -99
322      ENDIF      ENDIF
323      !--------------------------  
324    END SUBROUTINE histwrite_r2d    END SUBROUTINE histwrite_r2d
325    
326    !===    !************************************************************************
327    
328    SUBROUTINE histwrite_r3d (pfileid, pvarname, pitau, pdata)    SUBROUTINE histwrite_r3d (fileid, varname, itau, pdata)
     !--------------------------------------------------------------------  
329    
330      use calendar, only: isittime      use calendar, only: isittime
331      USE errioipsl, ONLY : histerr      USE errioipsl, ONLY: histerr
332      USE mathelp, ONLY : mathop      USE mathop_m, ONLY: mathop
333      use histcom_var      USE histcom_var, ONLY: datasz_in, datasz_max, date0, deltat, &
334             freq_opp, freq_wrt, fuchnbout, last_opp, last_opp_chk, last_wrt, &
335      INTEGER, INTENT(IN) :: pfileid, pitau           last_wrt_chk, missing_val, nbopp, nb_files, scal, scsize, sopps, &
336      REAL, DIMENSION(:, :, :), INTENT(IN) :: pdata           topp
337      CHARACTER(LEN=*), INTENT(IN) :: pvarname      use histvar_seq_m, only: histvar_seq
338        use histwrite_real_m, only: histwrite_real
339    
340        INTEGER, INTENT(IN):: fileid, itau
341        REAL, DIMENSION(:, :, :), INTENT(IN):: pdata
342        CHARACTER(LEN=*), INTENT(IN):: varname
343    
344      integer nbindex, nindex(size(pdata))      integer nbindex, nindex(size(pdata))
345      LOGICAL :: do_oper, do_write, largebuf      LOGICAL:: do_oper, do_write, largebuf
346      INTEGER :: varid, io, nbpt_in(1:3), nbpt_out      INTEGER:: varid, io, nbpt_in(1:3), nbpt_out
347      REAL, ALLOCATABLE, SAVE :: buff_tmp(:)      REAL, ALLOCATABLE, SAVE:: buff_tmp(:)
348      INTEGER, SAVE :: buff_tmp_sz      INTEGER, SAVE:: buff_tmp_sz
349      CHARACTER(LEN=7) :: tmp_opp      CHARACTER(LEN=7):: tmp_opp
350    
351      !--------------------------------------------------------------------      !--------------------------------------------------------------------
352    
# Line 354  CONTAINS Line 356  CONTAINS
356      ! 1.0 Try to catch errors like specifying the wrong file ID.      ! 1.0 Try to catch errors like specifying the wrong file ID.
357      !     Thanks Marine for showing us what errors users can make !      !     Thanks Marine for showing us what errors users can make !
358    
359      IF ( (pfileid < 1).OR.(pfileid > nb_files) ) THEN      IF ( (fileid < 1).OR.(fileid > nb_files) ) THEN
360         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
361              &    'Illegal file ID in the histwrite of variable', pvarname, ' ')              &    'Illegal file ID in the histwrite of variable', varname, ' ')
362      ENDIF      ENDIF
363    
364      ! 1.1 Find the id of the variable to be written and the real time      ! 1.1 Find the id of the variable to be written and the real time
365    
366      CALL histvar_seq (pfileid, pvarname, varid)      CALL histvar_seq (fileid, varname, varid)
367    
368      ! 2.0 do nothing for never operation      ! 2.0 do nothing for never operation
369    
370      tmp_opp = topp(pfileid, varid)      tmp_opp = topp(fileid, varid)
371    
372      IF (TRIM(tmp_opp) == "never") THEN      IF (TRIM(tmp_opp) == "never") THEN
373         last_opp_chk(pfileid, varid) = -99         last_opp_chk(fileid, varid) = -99
374         last_wrt_chk(pfileid, varid) = -99         last_wrt_chk(fileid, varid) = -99
375      ENDIF      ENDIF
376    
377      ! 3.0 We check if we need to do an operation      ! 3.0 We check if we need to do an operation
378    
379      IF (last_opp_chk(pfileid, varid) == pitau) THEN      IF (last_opp_chk(fileid, varid) == itau) THEN
380         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
381              &    'This variable as already been analysed at the present', &              &    'This variable as already been analysed at the present', &
382              &    'time step', ' ')              &    'time step', ' ')
383      ENDIF      ENDIF
384    
385      CALL isittime &      CALL isittime &
386           &  (pitau, date0(pfileid), deltat(pfileid), freq_opp(pfileid, varid), &           &  (itau, date0(fileid), deltat(fileid), freq_opp(fileid, varid), &
387           &   last_opp(pfileid, varid), last_opp_chk(pfileid, varid), do_oper)           &   last_opp(fileid, varid), last_opp_chk(fileid, varid), do_oper)
388    
389      ! 4.0 We check if we need to write the data      ! 4.0 We check if we need to write the data
390    
391      IF (last_wrt_chk(pfileid, varid) == pitau) THEN      IF (last_wrt_chk(fileid, varid) == itau) THEN
392         CALL histerr (3, "histwrite", &         CALL histerr (3, "histwrite", &
393              &    'This variable as already been written for the present', &              &    'This variable as already been written for the present', &
394              &    'time step', ' ')              &    'time step', ' ')
395      ENDIF      ENDIF
396    
397      CALL isittime &      CALL isittime &
398           &  (pitau, date0(pfileid), deltat(pfileid), freq_wrt(pfileid, varid), &           &  (itau, date0(fileid), deltat(fileid), freq_wrt(fileid, varid), &
399           &   last_wrt(pfileid, varid), last_wrt_chk(pfileid, varid), do_write)           &   last_wrt(fileid, varid), last_wrt_chk(fileid, varid), do_write)
400    
401      ! 5.0 histwrite called      ! 5.0 histwrite called
402    
# Line 402  CONTAINS Line 404  CONTAINS
404    
405         !- 5.1 Get the sizes of the data we will handle         !- 5.1 Get the sizes of the data we will handle
406    
407         IF (datasz_in(pfileid, varid, 1) <= 0) THEN         IF (datasz_in(fileid, varid, 1) <= 0) THEN
408            !--- There is the risk here that the user has over-sized the array.            !--- There is the risk here that the user has over-sized the array.
409            !--- But how can we catch this ?            !--- But how can we catch this ?
410            !--- In the worst case we will do impossible operations            !--- In the worst case we will do impossible operations
411            !--- on part of the data !            !--- on part of the data !
412            datasz_in(pfileid, varid, 1) = SIZE(pdata, DIM=1)            datasz_in(fileid, varid, 1) = SIZE(pdata, DIM=1)
413            datasz_in(pfileid, varid, 2) = SIZE(pdata, DIM=2)            datasz_in(fileid, varid, 2) = SIZE(pdata, DIM=2)
414            datasz_in(pfileid, varid, 3) = SIZE(pdata, DIM=3)            datasz_in(fileid, varid, 3) = SIZE(pdata, DIM=3)
415         ENDIF         ENDIF
416    
417         !- 5.2 The maximum size of the data will give the size of the buffer         !- 5.2 The maximum size of the data will give the size of the buffer
418    
419         IF (datasz_max(pfileid, varid) <= 0) THEN         IF (datasz_max(fileid, varid) <= 0) THEN
420            largebuf = .FALSE.            largebuf = .FALSE.
421            DO io =1, nbopp(pfileid, varid)            DO io =1, nbopp(fileid, varid)
422               IF (INDEX(fuchnbout, sopps(pfileid, varid, io)) > 0) THEN               IF (INDEX(fuchnbout, sopps(fileid, varid, io)) > 0) THEN
423                  largebuf = .TRUE.                  largebuf = .TRUE.
424               ENDIF               ENDIF
425            ENDDO            ENDDO
426            IF (largebuf) THEN            IF (largebuf) THEN
427               datasz_max(pfileid, varid) = &               datasz_max(fileid, varid) = &
428                    &        scsize(pfileid, varid, 1) &                    &        scsize(fileid, varid, 1) &
429                    &       *scsize(pfileid, varid, 2) &                    &       *scsize(fileid, varid, 2) &
430                    &       *scsize(pfileid, varid, 3)                    &       *scsize(fileid, varid, 3)
431            ELSE            ELSE
432               datasz_max(pfileid, varid) = &               datasz_max(fileid, varid) = &
433                    &        datasz_in(pfileid, varid, 1) &                    &        datasz_in(fileid, varid, 1) &
434                    &       *datasz_in(pfileid, varid, 2) &                    &       *datasz_in(fileid, varid, 2) &
435                    &       *datasz_in(pfileid, varid, 3)                    &       *datasz_in(fileid, varid, 3)
436            ENDIF            ENDIF
437         ENDIF         ENDIF
438    
439         IF (.NOT.ALLOCATED(buff_tmp)) THEN         IF (.NOT.ALLOCATED(buff_tmp)) THEN
440            ALLOCATE (buff_tmp(datasz_max(pfileid, varid)))            ALLOCATE (buff_tmp(datasz_max(fileid, varid)))
441            buff_tmp_sz = datasz_max(pfileid, varid)            buff_tmp_sz = datasz_max(fileid, varid)
442         ELSE IF (datasz_max(pfileid, varid) > buff_tmp_sz) THEN         ELSE IF (datasz_max(fileid, varid) > buff_tmp_sz) THEN
443            DEALLOCATE (buff_tmp)            DEALLOCATE (buff_tmp)
444            ALLOCATE (buff_tmp(datasz_max(pfileid, varid)))            ALLOCATE (buff_tmp(datasz_max(fileid, varid)))
445            buff_tmp_sz = datasz_max(pfileid, varid)            buff_tmp_sz = datasz_max(fileid, varid)
446         ENDIF         ENDIF
447    
448         !- We have to do the first operation anyway.         !- We have to do the first operation anyway.
449         !- Thus we do it here and change the ranke         !- Thus we do it here and change the ranke
450         !- of the data at the same time. This should speed up things.         !- of the data at the same time. This should speed up things.
451    
452         nbpt_in(1:3) = datasz_in(pfileid, varid, 1:3)         nbpt_in(1:3) = datasz_in(fileid, varid, 1:3)
453         nbpt_out = datasz_max(pfileid, varid)         nbpt_out = datasz_max(fileid, varid)
454         CALL mathop (sopps(pfileid, varid, 1), nbpt_in, pdata, &         CALL mathop (sopps(fileid, varid, 1), nbpt_in, pdata, &
455              &               missing_val, nbindex, nindex, &              &               missing_val, nbindex, nindex, &
456              &               scal(pfileid, varid, 1), nbpt_out, buff_tmp)              &               scal(fileid, varid, 1), nbpt_out, buff_tmp)
457         CALL histwrite_real (pfileid, varid, pitau, nbpt_out, &         CALL histwrite_real (fileid, varid, itau, nbpt_out, &
458              &            buff_tmp, nbindex, nindex, do_oper, do_write)              &            buff_tmp, nbindex, nindex, do_oper, do_write)
459      ENDIF      ENDIF
460    
461      ! 6.0 Manage time steps      ! 6.0 Manage time steps
462    
463      IF ((TRIM(tmp_opp) /= "once").AND.(TRIM(tmp_opp) /= "never")) THEN      IF ((TRIM(tmp_opp) /= "once").AND.(TRIM(tmp_opp) /= "never")) THEN
464         last_opp_chk(pfileid, varid) = pitau         last_opp_chk(fileid, varid) = itau
465         last_wrt_chk(pfileid, varid) = pitau         last_wrt_chk(fileid, varid) = itau
466      ELSE      ELSE
467         last_opp_chk(pfileid, varid) = -99         last_opp_chk(fileid, varid) = -99
468         last_wrt_chk(pfileid, varid) = -99         last_wrt_chk(fileid, varid) = -99
     ENDIF  
     !--------------------------  
   END SUBROUTINE histwrite_r3d  
   
   !===  
   
   SUBROUTINE histwrite_real(pfileid, varid, pitau, nbdpt, buff_tmp, nbindex, &  
        nindex, do_oper, do_write)  
   
     ! This subroutine is internal and does the calculations and writing  
     ! if needed. At a later stage it should be split into an operation  
     ! and writing subroutines.  
     !--------------------------------------------------------------------  
   
     USE mathelp, ONLY : mathop, trans_buff, moycum  
     use netcdf, only: NF90_PUT_VAR  
     use histcom_var  
   
     INTEGER, INTENT(IN) :: pfileid, pitau, varid, &  
          &                      nbindex, nindex(nbindex), nbdpt  
     REAL, DIMENSION(:)  :: buff_tmp  
     LOGICAL, INTENT(IN) :: do_oper, do_write  
   
     INTEGER :: tsz, ncid, ncvarid  
     INTEGER :: i, iret, ipt, itax  
     INTEGER :: io, nbin, nbout  
     INTEGER, DIMENSION(4) :: corner, edges  
     INTEGER :: itime  
   
     REAL :: rtime  
     CHARACTER(LEN=7) :: tmp_opp  
   
     REAL, ALLOCATABLE, SAVE :: buff_tmp2(:)  
     INTEGER, SAVE          :: buff_tmp2_sz  
     REAL, ALLOCATABLE, SAVE :: buffer_used(:)  
     INTEGER, SAVE          :: buffer_sz  
   
     !--------------------------------------------------------------------  
   
     ! The sizes which can be encoutered  
   
     tsz = zsize(pfileid, varid, 1)*zsize(pfileid, varid, 2)*zsize(pfileid, varid, 3)  
   
     ! 1.0 We allocate the memory needed to store the data between write  
     !     and the temporary space needed for operations.  
     !     We have to keep precedent buffer if needed  
   
     IF (.NOT. ALLOCATED(buffer)) THEN  
        ALLOCATE(buffer(buff_pos))  
        buffer_sz = buff_pos  
        buffer(:)=0.0  
     ELSE IF (buffer_sz < buff_pos) THEN  
        IF (SUM(buffer)/=0.0) THEN  
           ALLOCATE (buffer_used(buffer_sz))  
           buffer_used(:)=buffer(:)  
           DEALLOCATE (buffer)  
           ALLOCATE (buffer(buff_pos))  
           buffer_sz = buff_pos  
           buffer(:SIZE(buffer_used))=buffer_used  
           DEALLOCATE (buffer_used)  
        ELSE  
           DEALLOCATE (buffer)  
           ALLOCATE (buffer(buff_pos))  
           buffer_sz = buff_pos  
           buffer(:)=0.0  
        ENDIF  
469      ENDIF      ENDIF
470    
471      ! The buffers are only deallocated when more space is needed. This    END SUBROUTINE histwrite_r3d
     ! reduces the umber of allocates but increases memory needs.  
   
     IF (.NOT.ALLOCATED(buff_tmp2)) THEN  
        ALLOCATE (buff_tmp2(datasz_max(pfileid, varid)))  
        buff_tmp2_sz = datasz_max(pfileid, varid)  
     ELSE IF ( datasz_max(pfileid, varid) > buff_tmp2_sz) THEN  
        DEALLOCATE (buff_tmp2)  
        ALLOCATE (buff_tmp2(datasz_max(pfileid, varid)))  
        buff_tmp2_sz = datasz_max(pfileid, varid)  
     ENDIF  
   
     rtime = pitau * deltat(pfileid)  
     tmp_opp = topp(pfileid, varid)  
   
     ! 3.0 Do the operations or transfer the slab of data into buff_tmp  
   
     ! 3.1 DO the Operations only if needed  
   
     IF ( do_oper ) THEN  
        i = pfileid  
        nbout = nbdpt  
   
        !- 3.4 We continue the sequence of operations  
        !-     we started in the interface routine  
   
        DO io = 2, nbopp(i, varid), 2  
           nbin = nbout  
           nbout = datasz_max(i, varid)  
           CALL mathop(sopps(i, varid, io), nbin, buff_tmp, missing_val, &  
                &      nbindex, nindex, scal(i, varid, io), nbout, buff_tmp2)  
   
           nbin = nbout  
           nbout = datasz_max(i, varid)  
           CALL mathop(sopps(i, varid, io+1), nbin, buff_tmp2, missing_val, &  
                &      nbindex, nindex, scal(i, varid, io+1), nbout, buff_tmp)  
        ENDDO  
   
        !   3.5 Zoom into the data  
   
        CALL trans_buff &  
             &      (zorig(i, varid, 1), zsize(i, varid, 1), &  
             &       zorig(i, varid, 2), zsize(i, varid, 2), &  
             &       zorig(i, varid, 3), zsize(i, varid, 3), &  
             &       scsize(i, varid, 1), scsize(i, varid, 2), scsize(i, varid, 3), &  
             &       buff_tmp, buff_tmp2_sz, buff_tmp2)  
   
        !- 5.0 Do the operations if needed. In the case of instantaneous  
        !-     output we do not transfer to the buffer.  
   
        ipt = point(pfileid, varid)  
   
        IF (     (TRIM(tmp_opp) /= "inst") &  
             &    .AND.(TRIM(tmp_opp) /= "once") ) THEN  
           CALL moycum(tmp_opp, tsz, buffer(ipt:), &  
                &       buff_tmp2, nb_opp(pfileid, varid))  
        ENDIF  
   
        last_opp(pfileid, varid) = pitau  
        nb_opp(pfileid, varid) = nb_opp(pfileid, varid)+1  
   
     ENDIF  
   
     ! 6.0 Write to file if needed  
   
     IF ( do_write ) THEN  
   
        ncvarid = ncvar_ids(pfileid, varid)  
        ncid = ncdf_ids(pfileid)  
   
        !- 6.1 Do the operations that are needed before writting  
   
        IF (     (TRIM(tmp_opp) /= "inst") &  
             &    .AND.(TRIM(tmp_opp) /= "once") ) THEN  
           rtime = (rtime+last_wrt(pfileid, varid)*deltat(pfileid))/2.0  
        ENDIF  
   
        !- 6.2 Add a value to the time axis of this variable if needed  
   
        IF (     (TRIM(tmp_opp) /= "l_max") &  
             &    .AND.(TRIM(tmp_opp) /= "l_min") &  
             &    .AND.(TRIM(tmp_opp) /= "once") ) THEN  
   
           itax = var_axid(pfileid, varid)  
           itime = nb_wrt(pfileid, varid)+1  
   
           IF (tax_last(pfileid, itax) < itime) THEN  
              iret = NF90_PUT_VAR (ncid, tdimid(pfileid, itax), (/ rtime /), &  
                   &                            start=(/ itime /), count=(/ 1 /))  
              tax_last(pfileid, itax) = itime  
           ENDIF  
        ELSE  
           itime=1  
        ENDIF  
   
        !- 6.3 Write the data. Only in the case of instantaneous output  
        !       we do not write the buffer.  
   
        IF (scsize(pfileid, varid, 3) == 1) THEN  
           IF (regular(pfileid)) THEN  
              corner(1:4) = (/ 1, 1, itime, 0 /)  
              edges(1:4) = (/ zsize(pfileid, varid, 1), &  
                   &                      zsize(pfileid, varid, 2), &  
                   &                       1, 0 /)  
           ELSE  
              corner(1:4) = (/ 1, itime, 0, 0 /)  
              edges(1:4) = (/ zsize(pfileid, varid, 1), 1, 0, 0 /)  
           ENDIF  
        ELSE  
           IF ( regular(pfileid) ) THEN  
              corner(1:4) = (/ 1, 1, 1, itime /)  
              edges(1:4) = (/ zsize(pfileid, varid, 1), &  
                   &                      zsize(pfileid, varid, 2), &  
                   &                      zsize(pfileid, varid, 3), 1 /)  
           ELSE  
              corner(1:4) = (/ 1, 1, itime, 0 /)  
              edges(1:4) = (/ zsize(pfileid, varid, 1), &  
                   &                      zsize(pfileid, varid, 3), 1, 0 /)  
           ENDIF  
        ENDIF  
   
        ipt = point(pfileid, varid)  
   
        IF (     (TRIM(tmp_opp) /= "inst") &  
             &      .AND.(TRIM(tmp_opp) /= "once") ) THEN  
           iret = NF90_PUT_VAR (ncid, ncvarid, buffer(ipt:), &  
                &                       start=corner(1:4), count=edges(1:4))  
        ELSE  
           iret = NF90_PUT_VAR (ncid, ncvarid, buff_tmp2, &  
                &                       start=corner(1:4), count=edges(1:4))  
        ENDIF  
   
        last_wrt(pfileid, varid) = pitau  
        nb_wrt(pfileid, varid) = nb_wrt(pfileid, varid)+1  
        nb_opp(pfileid, varid) = 0  
        !--  
        !   After the write the file can be synchronized so that no data is  
        !   lost in case of a crash. This feature gives up on the benefits of  
        !   buffering and should only be used in debuging mode. A flag is  
        !   needed here to switch to this mode.  
        !--  
        !   iret = NF90_SYNC (ncid)  
   
     ENDIF  
     !---------------------------  
   END SUBROUTINE histwrite_real  
   
   !*************************************************************  
   
   SUBROUTINE histvar_seq (pfid, pvarname, pvid)  
   
     ! This subroutine optimized the search for the variable in the table.  
     ! In a first phase it will learn the succession of the variables  
     ! called and then it will use the table to guess what comes next.  
     ! It is the best solution to avoid lengthy searches through array  
     ! vectors.  
   
     ! ARGUMENTS :  
   
     ! pfid  : id of the file on which we work  
     ! pvarname : The name of the variable we are looking for  
     ! pvid     : The var id we found  
   
     USE stringop, ONLY: find_str  
     USE errioipsl, ONLY : histerr  
     use histcom_var  
   
     INTEGER, INTENT(in)  :: pfid  
     CHARACTER(LEN=*), INTENT(IN) :: pvarname  
     INTEGER, INTENT(out) :: pvid  
   
     LOGICAL, SAVE :: learning(nb_files_max)=.TRUE.  
     INTEGER, SAVE :: overlap(nb_files_max) = -1  
     INTEGER, SAVE :: varseq(nb_files_max, nb_var_max*3)  
     INTEGER, SAVE :: varseq_len(nb_files_max) = 0  
     INTEGER, SAVE :: varseq_pos(nb_files_max)  
     INTEGER, SAVE :: varseq_err(nb_files_max) = 0  
     INTEGER      :: nb, sp, nx, pos, ib  
     CHARACTER(LEN=20), DIMENSION(nb_var_max) :: tab_str20  
     CHARACTER(LEN=20) :: str20  
     CHARACTER(LEN=70) :: str70  
     INTEGER      :: tab_str20_length(nb_var_max)  
   
     !--------------------------------------------------------------------  
     nb = nb_var(pfid)  
   
     IF (learning(pfid)) THEN  
   
        !- 1.0 We compute the length over which we are going  
        !-     to check the overlap  
   
        IF (overlap(pfid) <= 0) THEN  
           IF (nb_var(pfid) > 6) THEN  
              overlap(pfid) = nb_var(pfid)/3*2  
           ELSE  
              overlap(pfid) = nb_var(pfid)  
           ENDIF  
        ENDIF  
   
        !- 1.1 Find the position of this string  
   
        str20 = pvarname  
        tab_str20(1:nb) = name(pfid, 1:nb)  
        tab_str20_length(1:nb) = name_length(pfid, 1:nb)  
   
        CALL find_str (nb, tab_str20, tab_str20_length, str20, pos)  
   
        IF (pos > 0) THEN  
           pvid = pos  
        ELSE  
           CALL histerr (3, "histvar_seq", &  
                &      'The name of the variable you gave has not been declared', &  
                &      'You should use subroutine histdef for declaring variable', &  
                &      TRIM(str20))  
        ENDIF  
   
        !- 1.2 If we have not given up we store the position  
        !-     in the sequence of calls  
   
        IF ( varseq_err(pfid) .GE. 0 ) THEN  
           sp = varseq_len(pfid)+1  
           IF (sp <= nb_var_max*3) THEN  
              varseq(pfid, sp) = pvid  
              varseq_len(pfid) = sp  
           ELSE  
              CALL histerr (2, "histvar_seq", &  
                   &       'The learning process has failed and we give up. '// &  
                   &       'Either you sequence is', &  
                   &       'too complex or I am too dumb. '// &  
                   &       'This will only affect the efficiency', &  
                   &       'of your code. Thus if you wish to save time'// &  
                   &       ' contact the IOIPSL team. ')  
              WRITE(*, *) 'The sequence we have found up to now :'  
              WRITE(*, *) varseq(pfid, 1:sp-1)  
              varseq_err(pfid) = -1  
           ENDIF  
   
           !--- 1.3 Check if we have found the right overlap  
   
           IF (varseq_len(pfid) .GE. overlap(pfid)*2) THEN  
   
              !----- We skip a few variables if needed as they could come  
              !----- from the initialisation of the model.  
   
              DO ib = 0, sp-overlap(pfid)*2  
                 IF ( learning(pfid) .AND.&  
                      & SUM(ABS(varseq(pfid, ib+1:ib+overlap(pfid)) -&  
                      & varseq(pfid, sp-overlap(pfid)+1:sp))) == 0 ) THEN  
                    learning(pfid) = .FALSE.  
                    varseq_len(pfid) = sp-overlap(pfid)-ib  
                    varseq_pos(pfid) = overlap(pfid)+ib  
                    varseq(pfid, 1:varseq_len(pfid)) = &  
                         &            varseq(pfid, ib+1:ib+varseq_len(pfid))  
                 ENDIF  
              ENDDO  
           ENDIF  
        ENDIF  
     ELSE  
   
        !- 2.0 Now we know how the calls to histwrite are sequenced  
        !-     and we can get a guess at the var ID  
   
        nx = varseq_pos(pfid)+1  
        IF (nx > varseq_len(pfid)) nx = 1  
   
        pvid = varseq(pfid, nx)  
   
        IF (    (INDEX(name(pfid, pvid), pvarname) <= 0)         &  
             &    .OR.(name_length(pfid, pvid) /= len_trim(pvarname)) ) THEN  
           str20 = pvarname  
           tab_str20(1:nb) = name(pfid, 1:nb)  
           tab_str20_length(1:nb) = name_length(pfid, 1:nb)  
           CALL find_str (nb, tab_str20, tab_str20_length, str20, pos)  
           IF (pos > 0) THEN  
              pvid = pos  
           ELSE  
              CALL histerr(3, "histvar_seq", &  
                   &  'The name of the variable you gave has not been declared', &  
                   &  'You should use subroutine histdef for declaring variable', str20)  
           ENDIF  
           varseq_err(pfid) = varseq_err(pfid)+1  
        ELSE  
   
           !--- We only keep the new position if we have found the variable  
           !--- this way. This way an out of sequence call to histwrite does  
           !--- not defeat the process.  
   
           varseq_pos(pfid) = nx  
        ENDIF  
   
        IF (varseq_err(pfid) .GE. 10) THEN  
           WRITE(str70, '("for file ", I3)') pfid  
           CALL histerr(2, "histvar_seq", &  
                &  'There were 10 errors in the learned sequence of variables', &  
                &  str70, 'This looks like a bug, please report it.')  
           varseq_err(pfid) = 0  
        ENDIF  
     ENDIF  
   
   END SUBROUTINE histvar_seq  
472    
473  END MODULE histwrite_m  END MODULE histwrite_m
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