summaryrefslogtreecommitdiffstats
path: root/fortran/src/H5Df.c
blob: 83b69e799d87665023c7c4083355c71548e9fa02 (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
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* This files contains C stubs for H5D Fortran APIs */

#include "H5f90.h"

/*----------------------------------------------------------------------------
 * Name:        h5dcreate_c
 * Purpose:     Call H5Dcreate to create a dataset 
 * Inputs:      loc_id - file or group identifier 
 *              name - name of the dataset     
 *              namelen - name length
 *              type_id - datatype identifier
 *              space_id - dataspace identifier
 *              crt_pr  - identifier of creation property list
 * Outputs:     dset_id - dataset identifier
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, August 4, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/
int_f
nh5dcreate_c (hid_t_f *loc_id, _fcd name, int_f *namelen, hid_t_f *type_id, hid_t_f *space_id, hid_t_f *crt_prp,  hid_t_f *dset_id)
{
     int ret_value = -1;
     char *c_name;
     int c_namelen;
     hid_t c_loc_id;
     hid_t c_type_id;
     hid_t c_space_id;
     hid_t c_dset_id;
     hid_t c_crt_prp;
     
     /*
      * Define creation property
      */
     c_crt_prp = (hid_t)*crt_prp;

     /*
      * Convert FORTRAN name to C name
      */
     c_namelen = *namelen;
     c_name = (char *)HD5f2cstring(name, c_namelen); 
     if (c_name == NULL) return ret_value;

     /*
      * Call H5Dcreate function.
      */
     c_loc_id = (hid_t)*loc_id;
     c_type_id = (hid_t)*type_id;
     c_space_id = (hid_t)*space_id;
     c_dset_id = H5Dcreate(c_loc_id, c_name, c_type_id, c_space_id, c_crt_prp);
     if (c_dset_id < 0) goto DONE;
     *dset_id = (hid_t_f)c_dset_id;
     ret_value = 0;

DONE:
     HDfree(c_name);
     return ret_value;
}      

/*----------------------------------------------------------------------------
 * Name:        h5dopen_c
 * Purpose:     Call H5Dopen to open a dataset 
 * Inputs:      loc_id - file or group identifier 
 *              name - name of the dataset     
 *              namelen - name length
 * Outputs:     dset_id - dataset identifier
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, August 4, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/
int_f
nh5dopen_c (hid_t_f *loc_id, _fcd name, int_f *namelen, hid_t_f *dset_id)
{
     int ret_value = -1;
     char *c_name;
     int c_namelen;
     hid_t c_loc_id;
     hid_t c_dset_id;

     /*
      * Convert FORTRAN name to C name
      */
     c_namelen = *namelen;
     c_name = (char *)HD5f2cstring(name, c_namelen); 
     if (c_name == NULL) return ret_value;

     /*
      * Call H5Dopen function.
      */
     c_loc_id = (hid_t)*loc_id;
     c_dset_id = H5Dopen(c_loc_id, c_name);

     if (c_dset_id < 0) goto DONE;
     *dset_id = (hid_t_f)c_dset_id;
     ret_value = 0;

DONE:
     HDfree(c_name);
     return ret_value;
}      

/*----------------------------------------------------------------------------
 * Name:        h5dwritec_c
 * Purpose:     Call h5dwrite_c to write a dataset of characters 
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 *              buf      - character data buffer
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Tuesday, May 14, 2002
 * Modifications: This function is added to accomodate oveloaded h5dwrite_f
 *                with the dims argument being of INTEGER(HSIZE_T) type
 *---------------------------------------------------------------------------*/
int_f
nh5dwritec_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, _fcd buf, hsize_t_f *dims)
{
     int ret_value = -1;
     
     /*
      * Call h5dwrite_c  function.
      */
     ret_value = nh5dwrite_c(dset_id, mem_type_id, mem_space_id, file_space_id, xfer_prp, _fcdtocp(buf), dims);

     return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dwrite_c
 * Purpose:     Call H5Dwrite to write a dataset 
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 *              buf      - data buffer
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Tuesday, May 14, 2002
 * Modifications: This function is added to accomodate oveloaded h5dwrite_f
 *                with the dims argument being of INTEGER(HSIZE_T) type
 *---------------------------------------------------------------------------*/
int_f
nh5dwrite_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, void *buf, hsize_t_f *dims)
{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     hid_t c_mem_type_id;
     hid_t c_mem_space_id;
     hid_t c_file_space_id;
     hid_t c_xfer_prp;

     /*
      * Define transfer property
      */
     c_xfer_prp = (hid_t)*xfer_prp;
     
     /*
      * Call H5Dwrite function.
      */
     c_dset_id = (hid_t)*dset_id;
     c_mem_type_id = (hid_t)*mem_type_id;
     c_mem_space_id = (hid_t)*mem_space_id;
     c_file_space_id = (hid_t)*file_space_id;
     ret = H5Dwrite(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, buf);

     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;
}      


/*----------------------------------------------------------------------------
 * Name:        h5dwrite_ref_obj_c
 * Purpose:     Call H5Dwrite to write a dataset  of object references
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 *              buf      - data buffer with references to the objects.
 *              n - number of references to be stored.   
 * Returns:     0 on success,e-1 on failure
 * Programmer:  Elena Pourmal
 *              Tuesday, May 14, 2002
 * Modifications: This function was added to accomodate h5dwrite_f with the
 *                dims argumnet being of INTEGER(HSIZE_T) type.
 *---------------------------------------------------------------------------*/
int_f
nh5dwrite_ref_obj_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, int_f *buf, hsize_t_f *dims)
{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     hid_t c_mem_type_id;
     hid_t c_mem_space_id;
     hid_t c_file_space_id;
     hid_t c_xfer_prp;
     hobj_ref_t *buf_c;
     int i, n;
     n = (int)*dims;

     /*
      * Define transfer property
      */
     c_xfer_prp = (hid_t)*xfer_prp;

     /*
      * Allocate temporary buffer and copy references from Fortran.
      */
      buf_c = (hobj_ref_t*)HDmalloc(sizeof(hobj_ref_t)*(n));
      if ( buf_c != NULL ) {
      for (i = 0; i < n; i++) {
           HDmemcpy(&buf_c[i], buf, H5R_OBJ_REF_BUF_SIZE);
           buf = buf + REF_OBJ_BUF_LEN_F;
      }
      }  
      else return ret_value;
     
     /*
      * Call H5Dwrite function.
      */
     c_dset_id = (hid_t)*dset_id;
     c_mem_type_id = (hid_t)*mem_type_id;
     c_mem_space_id = (hid_t)*mem_space_id;
     c_file_space_id = (hid_t)*file_space_id;
     ret = H5Dwrite(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, buf_c);
     HDfree(buf_c);
     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;

}
/*----------------------------------------------------------------------------
 * Name:        h5dwrite_ref_reg_c
 * Purpose:     Call H5Dwrite to write a dataset of dataset region references
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 *              buf      - data buffer with references to the objects.
 *              n - number of references to be stored.   
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Tuesday, May 14, 2002
 * Modifications: This function was added to accomodate h5dwrite_f with the
 *                dims argument being of INTEGER(HSIZE_T) type
 *---------------------------------------------------------------------------*/
int_f
nh5dwrite_ref_reg_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, int_f *buf, hsize_t_f *dims)
{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     hid_t c_mem_type_id;
     hid_t c_mem_space_id;
     hid_t c_file_space_id;
     hid_t c_xfer_prp;
     hdset_reg_ref_t *buf_c = NULL;
     int i, n;

      n = (int)*dims;
     /*
      * Define transfer property
      */
     c_xfer_prp = (hid_t)*xfer_prp;
     
     /*
      * Allocate temporary buffer and copy references from Fortran.
      */
      buf_c = (hdset_reg_ref_t *)HDmalloc(sizeof(hdset_reg_ref_t)*(n));
      if ( buf_c != NULL ) {
      for (i = 0; i < n; i++) {
           HDmemcpy(buf_c[i].heapid, buf, H5R_DSET_REG_REF_BUF_SIZE);
           buf = buf + REF_REG_BUF_LEN_F;
      }
      }  
      else return ret_value;
        
     
     /*
      * Call H5Dwrite function.
      */
     c_dset_id = (hid_t)*dset_id;
     c_mem_type_id = (hid_t)*mem_type_id;
     c_mem_space_id = (hid_t)*mem_space_id;
     c_file_space_id = (hid_t)*file_space_id;
     ret = H5Dwrite(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, buf_c);
     HDfree(buf_c);
     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;
}      



/*----------------------------------------------------------------------------
 * Name:        h5dreadc_c
 * Purpose:     Call h5dread_c to read a dataset of characters 
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 * Outputs:     buf      - character data buffer
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, May 15, 2002
 * Modifications: This function was added to accomodate h5dread_f subroutine
 *                with the dims parameter being of INTEGER(HSIZE_T_F) size.
 *---------------------------------------------------------------------------*/
int_f
nh5dreadc_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, _fcd buf, hsize_t_f *dims)
{
     int ret_value = -1;
     
     /*
      * Call h5dread_c  function.
      */
     ret_value = nh5dread_c(dset_id, mem_type_id, mem_space_id, file_space_id, xfer_prp, _fcdtocp(buf), dims);

     return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dread_c
 * Purpose:     Call H5Draed to read a dataset 
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 * Outputs:     buf      - data buffer
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, May 15, 2002
 * Modifications: This function was added to accomodate h5dread_f subroutine
 *                with the dims parameter being of INTEGER(HSIZE_T_F) size.
 *---------------------------------------------------------------------------*/
int_f
nh5dread_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, void *buf, hsize_t_f *dims)
{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     hid_t c_mem_type_id;
     hid_t c_mem_space_id;
     hid_t c_file_space_id;
     hid_t c_xfer_prp;

     /*
      * Define transfer property
      */
     c_xfer_prp = (hid_t)*xfer_prp;
     
     /*
      * Call H5Dread function.
      */
     c_dset_id = (hid_t)*dset_id;
     c_mem_type_id = (hid_t)*mem_type_id;
     c_mem_space_id = (hid_t)*mem_space_id;
     c_file_space_id = (hid_t)*file_space_id;
     ret = H5Dread(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, buf);

     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;
}


/*----------------------------------------------------------------------------
 * Name:        h5dread_ref_obj_c
 * Purpose:     Call H5Dread to read a dataset  of object references
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 *              buf      - data buffer to store references to the objects.
 *              n - number of references to be stored.   
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, May 15, 2002
 * Modifications: This function was added to accomodate h5dread_f subroutine
 *                with the dims parameter being of INTEGER(HSIZE_T_F) size.
 *---------------------------------------------------------------------------*/
int_f
nh5dread_ref_obj_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, int_f * buf, hsize_t_f *dims)
{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     hid_t c_mem_type_id;
     hid_t c_mem_space_id;
     hid_t c_file_space_id;
     hid_t c_xfer_prp;
     hobj_ref_t *buf_c = NULL;
     hsize_t i,n;
     n = (hsize_t)*dims;
     /*
      * Define transfer property
      */
     c_xfer_prp = (hid_t)*xfer_prp;
     
     /*
      * Allocate temporary buffer.
      */
     buf_c = (hobj_ref_t*)HDmalloc(sizeof(hobj_ref_t)*(size_t)n);
     if ( buf_c != NULL ) {
         /*
          * Call H5Dread function.
          */
         c_dset_id = (hid_t)*dset_id;
         c_mem_type_id = (hid_t)*mem_type_id;
         c_mem_space_id = (hid_t)*mem_space_id;
         c_file_space_id = (hid_t)*file_space_id;
         ret = H5Dread(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, buf_c);
         if (ret >=0) {
            for (i = 0; i < n; i++) {
               HDmemcpy(buf, &buf_c[i], H5R_OBJ_REF_BUF_SIZE);
               buf = buf + REF_OBJ_BUF_LEN_F;
            }  
         }
         if ( buf_c != NULL ) HDfree(buf_c);
     } 
     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dread_ref_reg_c
 * Purpose:     Call H5Dread to read a dataset of dataset region references
 * Inputs:      dset_id - dataset identifier 
 *              mem_type_id - memory datatype identifier
 *              mem_space_id - memory dataspace identifier
 *              file_space_id - memory dataspace identifier
 *              xfer_pr  - identifier of transfer property list
 *              buf      - data buffer to store references to the objects.
 *              n - number of references to be stored.   
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, May 15, 2002
 * Modifications: This function was added to accomodate h5dread_f subroutine
 *                with the dims parameter being of INTEGER(HSIZE_T_F) size.
 *---------------------------------------------------------------------------*/
int_f
nh5dread_ref_reg_c (hid_t_f *dset_id, hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, int_f * buf, hsize_t_f *dims)
{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     hid_t c_mem_type_id;
     hid_t c_mem_space_id;
     hid_t c_file_space_id;
     hid_t c_xfer_prp;
     hdset_reg_ref_t *buf_c = NULL;
     hsize_t i, n;
     n = (hsize_t)*dims;
     /*
      * Define transfer property
      */
     c_xfer_prp = (hid_t)*xfer_prp;
     
     /*
      * Allocate temporary buffer.
      */
     buf_c = (hdset_reg_ref_t *)HDmalloc(sizeof(hdset_reg_ref_t)*(size_t)n);
     if ( buf_c != NULL ) {
         /*
          * Call H5Dread function.
          */
         c_dset_id = (hid_t)*dset_id;
         c_mem_type_id = (hid_t)*mem_type_id;
         c_mem_space_id = (hid_t)*mem_space_id;
         c_file_space_id = (hid_t)*file_space_id;
         ret = H5Dread(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, buf_c);
         if (ret >=0) {
            for (i = 0; i < n; i++) {
               HDmemcpy(buf, buf_c[i].heapid, H5R_DSET_REG_REF_BUF_SIZE);
               buf = buf + REF_REG_BUF_LEN_F;
            }  
         }
         if ( buf_c != NULL ) HDfree(buf_c);
     } 
     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;
}      



/*----------------------------------------------------------------------------
 * Name:        h5dclose_c
 * Purpose:     Call H5Dclose to close a dataset 
 * Inputs:      dset_id - identifier of the dataset to be closed
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, August 4, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f
nh5dclose_c ( hid_t_f *dset_id )
{
  int ret_value = 0;
  hid_t c_dset_id;
  c_dset_id = (hid_t)*dset_id;
  if ( H5Dclose(c_dset_id) < 0  ) ret_value = -1;
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dget_space_c
 * Purpose:     Call H5Dget_space to obtain dataspace of a dataset 
 * Inputs:      dset_id - identifier of the dataset
 * Outputs:     space_id - identifier of the dataset's dataspace
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Thursday, August 19, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dget_space_c ( hid_t_f *dset_id , hid_t_f *space_id)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_space_id;
  
  c_dset_id = (hid_t)*dset_id; 
  c_space_id = H5Dget_space(c_dset_id);
  if(c_space_id < 0 ) return ret_value;
  ret_value = 0;
  *space_id = (hid_t_f)c_space_id;
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dget_type_c
 * Purpose:     Call H5Dget_type to obtain datatype of a dataset 
 * Inputs:      dset_id - identifier of the dataset
 * Outputs:     type_id - identifier of the dataset's datatype
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Thursday, August 19, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dget_type_c ( hid_t_f *dset_id , hid_t_f *type_id)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_type_id;
  
  c_dset_id = (hid_t)*dset_id;
  c_type_id = H5Dget_type(c_dset_id);

  if(c_type_id < 0 ) return ret_value;

  *type_id = (hid_t_f)c_type_id;
  ret_value = 0;
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dget_create_plist_c
 * Purpose:     Call H5Dget_create_plist to obtain creation property list
 *              of a dataset 
 * Inputs:      dset_id - identifier of the dataset
 * Outputs:     plist_id - identifier of he dataset creation property list
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Thursday, August 19, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dget_create_plist_c ( hid_t_f *dset_id , hid_t_f *plist_id)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_plist_id;
  
  c_dset_id = (hid_t)*dset_id;
  c_plist_id = H5Dget_create_plist(c_dset_id);

  if(c_plist_id < 0 ) return ret_value;

  ret_value = 0;
  *plist_id = (hid_t_f)c_plist_id;
  return ret_value;
}


/*----------------------------------------------------------------------------
 * Name:        h5dextend_c
 * Purpose:     Call H5Dextend to extend dataset with unlimited dimensions 
 * Inputs:      dset_id - identifier of the dataset 
 * Outputs:     dims - array with the dimension sizes 
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Thursday, August 19, 1999
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dextend_c ( hid_t_f *dset_id , hsize_t_f *dims)
{
  int ret_value = -1;
  hsize_t *c_dims;
  int status;
  int rank;
  int i;
  hid_t c_dset_id;
  hid_t c_space_id;

  c_dset_id = (hid_t)*dset_id;
  c_space_id = H5Dget_space(c_dset_id);
  if (c_space_id < 0) return ret_value;

  rank = H5Sget_simple_extent_ndims(c_space_id);
  if (rank < 0) return ret_value;

  c_dims = malloc(sizeof(hsize_t)*rank);
  if (!c_dims) return ret_value;

  /*
   * Reverse dimensions due to C-FORTRAN storage order.
   */
  for (i=0; i < rank; i++) 
      c_dims[i] = dims[rank - i - 1];
  
  status = H5Dextend(c_dset_id, c_dims);

  if ( status >= 0  ) ret_value = 0;
  HDfree(c_dims);
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        nh5dget_storage_size_c
 * Purpose:     Call H5Dget_storage_size to return the amount of storage 
 *              required for a dataset
 * Inputs:      dset_id - identifier of the dataset 
 * Outputs:     size    - the amount of storage required for a dataset
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Tuesday, October 22, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dget_storage_size_c ( hid_t_f *dset_id , hsize_t_f *size)
{
  int ret_value = -1;
  hsize_t c_size;
  hid_t c_dset_id;

  c_dset_id = (hid_t)*dset_id;
  c_size = H5Dget_storage_size(c_dset_id);
  if (c_size == 0) return ret_value;
  *size = (hsize_t_f)c_size;
  ret_value = 0;
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        nh5dvlen_get_max_len_c
 * Purpose:     Get the maximum size of the VL dataset element
 * Inputs:      dset_id - identifier of the dataset 
 *              type_id - datatype identifier
 *              space_id - dataspace identifier 
 * Outputs:     len      - maximum length of the VL dataset element
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Tuesday, October 22, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dvlen_get_max_len_c ( hid_t_f *dset_id ,  hid_t_f *type_id, hid_t_f *space_id, size_t_f *len)
{
  int ret_value = -1;
  size_t c_len;
  hid_t c_dset_id;
  hid_t c_type_id;
  hid_t c_space_id;
  hvl_t *c_buf;
  int i;
  hssize_t num_elem;
  herr_t status;

  c_dset_id = (hid_t)*dset_id;
  c_type_id = (hid_t)*type_id;
  c_space_id = (hid_t)*space_id;

  num_elem = H5Sget_select_npoints(c_space_id);  
  if( num_elem < 0) return ret_value;

  c_buf = (hvl_t *)malloc(sizeof(hvl_t)*(size_t)num_elem); 
  if (c_buf == NULL) return ret_value;
  status = H5Dread(c_dset_id, c_type_id, H5S_ALL, c_space_id, H5P_DEFAULT, c_buf);
  if(status < 0) goto DONE;
  
  c_len = 0;
  for (i=0; i < num_elem; i++) c_len = H5_MAX(c_len, c_buf[i].len);  
  *len = (size_t_f)c_len;
  H5Dvlen_reclaim(c_type_id, c_space_id, H5P_DEFAULT, c_buf);
  ret_value = 0;
  
DONE:

  free(c_buf);
  return ret_value;
}
/*----------------------------------------------------------------------------
 * Name:        nh5dwrite_vl_integer_c
 * Purpose:     Write variable length dataset 
 * Inputs:      dset_id - identifier of the dataset 
 *              mem_type_id - datatype identifier
 *              mem_space_id - dataspace identifier 
 *              file_space_id - file dataspace identifier 
 *              xfer          - file transfer property
 *              buf           - data buffer
 *              dims          - one-demnsional array of size 2
 *                              dims[0] = MAXLENGTH
 *                              dims[1] = number of elements of VL type
 *              len           - array element lenghts
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, October 23, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dwrite_vl_integer_c ( hid_t_f *dset_id ,  hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, int_f *buf, hsize_t_f *dims, size_t_f *len)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_mem_type_id;
  hid_t c_mem_space_id;
  hid_t c_file_space_id;
  hid_t c_xfer_prp;
  herr_t status;
  int *tmp;
  size_t max_len;

  hvl_t *c_buf;
  hsize_t i;
  hsize_t num_elem;
  
  max_len = (size_t)dims[0];
  num_elem = dims[1];

  c_dset_id       = (hid_t)*dset_id;
  c_mem_type_id   = (hid_t)*mem_type_id;
  c_mem_space_id  = (hid_t)*mem_space_id;
  c_file_space_id = (hid_t)*file_space_id;
  c_xfer_prp      = (hid_t)*xfer_prp;

  c_buf = (hvl_t *)malloc((size_t)num_elem * sizeof(hvl_t)); 
  if (c_buf == NULL) return ret_value;
  tmp = (int *)buf; 
  for (i=0; i < num_elem; i++) {
       c_buf[i].len = (size_t)len[i];  
       c_buf[i].p   = tmp;
       tmp = tmp + max_len;
 } 
  /*
   * Call H5Dwrite function.
   */
   status = H5Dwrite(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, c_buf);

  if( status < 0) goto DONE;
  ret_value = 0;
DONE:
  free(c_buf);
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        nh5dread_vl_integer_c
 * Purpose:     Read variable length dataset 
 * Inputs:      dset_id - identifier of the dataset 
 *              mem_type_id - datatype identifier
 *              mem_space_id - dataspace identifier 
 *              file_space_id - file dataspace identifier 
 *              xfer          - file transfer property
 *              dims          - one-demnsional array of size 2
 *                              dims[0] = MAXLENGTH
 *                              dims[1] = number of elements of VL type
 * Outputs:     buf           - data buffer
 *              len           - array element lenghts
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, October 24, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dread_vl_integer_c ( hid_t_f *dset_id ,  hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, int_f *buf, hsize_t_f *dims, size_t_f *len)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_mem_type_id;
  hid_t c_mem_space_id;
  hid_t c_file_space_id;
  hid_t c_xfer_prp;
  herr_t status;
  size_t max_len;

  hvl_t *c_buf;
  size_t i;
  hssize_t num_elem;
  
  c_dset_id       = (hid_t)*dset_id;
  c_mem_type_id   = (hid_t)*mem_type_id;
  c_mem_space_id  = (hid_t)*mem_space_id;
  c_file_space_id = (hid_t)*file_space_id;
  c_xfer_prp      = (hid_t)*xfer_prp;

  max_len = (size_t)dims[0];
  num_elem = H5Sget_select_npoints(c_mem_space_id);  
  if(num_elem != dims[1]) return ret_value;

  c_buf = (hvl_t *)malloc((size_t)num_elem * sizeof(hvl_t)); 
  if (c_buf == NULL) return ret_value;
  /*
   * Call H5Dread function.
   */
   status = H5Dread(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, c_buf);
 if ( status < 0 ) goto DONE;
  for (i=0; i < num_elem; i++) {
       len[i] = (size_t_f)c_buf[i].len;  
       memcpy(&buf[i*max_len], c_buf[i].p, c_buf[i].len*sizeof(int));
  }
  H5Dvlen_reclaim(c_mem_type_id, c_mem_space_id, H5P_DEFAULT, c_buf);
  ret_value = 0;
DONE:
  free(c_buf);
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        nh5dwrite_vl_string_c
 * Purpose:     Write variable length strings from Fortran program
 * Inputs:      dset_id - identifier of the dataset 
 *              mem_type_id - datatype identifier
 *              mem_space_id - dataspace identifier 
 *              file_space_id - file dataspace identifier 
 *              xfer          - file transfer property
 *              buf           - data buffer
 *              dims          - one-demnsional array of size 2 
 *                              dims[0] = number of strings of size max_len
 *              len           - array of strings lengths
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Monday, October 28, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dwrite_vl_string_c( hid_t_f *dset_id ,  hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, _fcd buf, hsize_t_f *dims, size_t_f *len)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_mem_type_id;
  hid_t c_mem_space_id;
  hid_t c_file_space_id;
  hid_t c_xfer_prp;
  herr_t status;
  char *tmp, *tmp_p;
  size_t max_len;

  char **c_buf;
  hsize_t i;
  hsize_t num_elem;
  
  max_len = (size_t)dims[0];
  num_elem = dims[1];

  c_dset_id       = (hid_t)*dset_id;
  c_mem_type_id   = (hid_t)*mem_type_id;
  c_mem_space_id  = (hid_t)*mem_space_id;
  c_file_space_id = (hid_t)*file_space_id;
  c_xfer_prp      = (hid_t)*xfer_prp;

  /*
   * Allocate arra of character pointers
   */
  c_buf = (char **)malloc((size_t)num_elem * sizeof(char *)); 
  if (c_buf == NULL) return ret_value;

  /* Copy data to long C string */
  tmp = (char *)HD5f2cstring(buf, (int)(max_len*num_elem));
  if (tmp == NULL) { free(c_buf);
                     return ret_value;
                   }
  /*
   * Move data from temorary buffer
   */
   tmp_p = tmp;
   for (i=0; i < num_elem; i++) {
        c_buf[i] = (char *) malloc((size_t)len[i]+1);
        memcpy(c_buf[i], tmp_p, (size_t)len[i]);
        c_buf[i][len[i]] = '\0'; 
        tmp_p = tmp_p + max_len;
   }

  /*
   * Call H5Dwrite function.
   */
   status = H5Dwrite(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, c_buf);

  if( status < 0) goto DONE;
  ret_value = 0;
DONE:
  H5Dvlen_reclaim(c_mem_type_id, c_mem_space_id, H5P_DEFAULT, c_buf);
  free(c_buf);
  free(tmp);
  return ret_value;
}
/*----------------------------------------------------------------------------
 * Name:        nh5dread_vl_string_c
 * Purpose:     Read variable length strings from Fortran program
 * Inputs:      dset_id - identifier of the dataset 
 *              mem_type_id - datatype identifier
 *              mem_space_id - dataspace identifier 
 *              file_space_id - file dataspace identifier 
 *              xfer          - file transfer property
 *              dims          - one-demnsional array of size 2 
 *                              dims[0] = number of strings of size max_len
 * Output:      buf           - data buffer
 *              len           - array of strings lengths
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Friday, November 1, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dread_vl_string_c( hid_t_f *dset_id ,  hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, _fcd buf, hsize_t_f *dims, size_t_f *len)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_mem_type_id;
  hid_t c_mem_space_id;
  hid_t c_file_space_id;
  hid_t c_xfer_prp;
  herr_t status;
  char *tmp, *tmp_p;
  size_t max_len;

  char **c_buf;
  hsize_t i;
  hsize_t num_elem;
  
  max_len = (size_t)dims[0];
  num_elem = dims[1];

  c_dset_id       = (hid_t)*dset_id;
  c_mem_type_id   = (hid_t)*mem_type_id;
  c_mem_space_id  = (hid_t)*mem_space_id;
  c_file_space_id = (hid_t)*file_space_id;
  c_xfer_prp      = (hid_t)*xfer_prp;

  /*
   * Allocate array of character pointers
   */
  c_buf = (char **)malloc((size_t)num_elem * sizeof(char *)); 
  if (c_buf == NULL) return ret_value;

  /*
   * Call H5Dread function.
   */
   status = H5Dread(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, c_buf);
   if (status < 0) { free(c_buf);
                     return ret_value;
                   }
  /* Copy data to long C string */
  tmp = (char *)malloc((size_t)(max_len*num_elem) +1);
  tmp_p = tmp;
  for (i=0; i<max_len*num_elem; i++) tmp[i] = ' ';
  tmp[max_len*num_elem] = '\0';
  for (i=0; i < num_elem; i++) {
        memcpy(tmp_p, c_buf[i], strlen(c_buf[i]));
        len[i] = (size_t_f)strlen(c_buf[i]);
        tmp_p = tmp_p + max_len;
  }
  HD5packFstring(tmp, _fcdtocp(buf), (int)(max_len*num_elem));
  ret_value = 0;
  H5Dvlen_reclaim(c_mem_type_id, c_mem_space_id, H5P_DEFAULT, c_buf);
  free(c_buf);
  free(tmp);
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        nh5dwrite_vl_real_c
 * Purpose:     Write variable length dataset 
 * Inputs:      dset_id - identifier of the dataset 
 *              mem_type_id - datatype identifier
 *              mem_space_id - dataspace identifier 
 *              file_space_id - file dataspace identifier 
 *              xfer          - file transfer property
 *              buf           - data buffer
 *              dims          - one-demnsional array of size 2
 *                              dims[0] = MAXLENGTH
 *                              dims[1] = number of elements of VL type
 *              len           - array element lenghts
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Monday, November 11, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dwrite_vl_real_c ( hid_t_f *dset_id ,  hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, real_f *buf, hsize_t_f *dims, size_t_f *len)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_mem_type_id;
  hid_t c_mem_space_id;
  hid_t c_file_space_id;
  hid_t c_xfer_prp;
  herr_t status;
  real_f *tmp;
  size_t max_len;

  hvl_t *c_buf;
  hsize_t i;
  hsize_t num_elem;
  
  max_len = (size_t)dims[0];
  num_elem = dims[1];

  c_dset_id       = (hid_t)*dset_id;
  c_mem_type_id   = (hid_t)*mem_type_id;
  c_mem_space_id  = (hid_t)*mem_space_id;
  c_file_space_id = (hid_t)*file_space_id;
  c_xfer_prp      = (hid_t)*xfer_prp;

  c_buf = (hvl_t *)malloc((size_t)num_elem * sizeof(hvl_t)); 
  if (c_buf == NULL) return ret_value;
  tmp = (real_f *)buf; 
  for (i=0; i < num_elem; i++) {
       c_buf[i].len = (size_t)len[i];  
       c_buf[i].p   = tmp;
       tmp = tmp + max_len;
 } 
  /*
   * Call H5Dwrite function.
   */
   status = H5Dwrite(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, c_buf);

  if( status < 0) goto DONE;
  ret_value = 0;
DONE:
  free(c_buf);
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        nh5dread_vl_real_c
 * Purpose:     Read variable length dataset 
 * Inputs:      dset_id - identifier of the dataset 
 *              mem_type_id - datatype identifier
 *              mem_space_id - dataspace identifier 
 *              file_space_id - file dataspace identifier 
 *              xfer          - file transfer property
 *              dims          - one-demnsional array of size 2
 *                              dims[0] = MAXLENGTH
 *                              dims[1] = number of elements of VL type
 * Outputs:     buf           - data buffer
 *              len           - array element lenghts
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Monday, November 11, 2002
 * Modifications:
 *---------------------------------------------------------------------------*/

int_f 
nh5dread_vl_real_c ( hid_t_f *dset_id ,  hid_t_f *mem_type_id, hid_t_f *mem_space_id, hid_t_f *file_space_id, hid_t_f *xfer_prp, real_f *buf, hsize_t_f *dims, size_t_f *len)
{
  int ret_value = -1;
  hid_t c_dset_id;
  hid_t c_mem_type_id;
  hid_t c_mem_space_id;
  hid_t c_file_space_id;
  hid_t c_xfer_prp;
  herr_t status;
  size_t max_len;

  hvl_t *c_buf;
  size_t i;
  hssize_t num_elem;
  
  c_dset_id       = (hid_t)*dset_id;
  c_mem_type_id   = (hid_t)*mem_type_id;
  c_mem_space_id  = (hid_t)*mem_space_id;
  c_file_space_id = (hid_t)*file_space_id;
  c_xfer_prp      = (hid_t)*xfer_prp;

  max_len = (size_t)dims[0];
  num_elem = H5Sget_select_npoints(c_mem_space_id);  
  if(num_elem != dims[1]) return ret_value;

  c_buf = (hvl_t *)malloc((size_t)num_elem * sizeof(hvl_t)); 
  if (c_buf == NULL) return ret_value;
  /*
   * Call H5Dread function.
   */
   status = H5Dread(c_dset_id, c_mem_type_id, c_mem_space_id, c_file_space_id, c_xfer_prp, c_buf);
 if ( status <0  )  goto DONE;
  for (i=0; i < num_elem; i++) {
       len[i] = (size_t_f)c_buf[i].len;  
       memcpy(&buf[i*max_len], c_buf[i].p, c_buf[i].len*sizeof(real_f));
  }
  
  H5Dvlen_reclaim(c_mem_type_id, c_mem_space_id, H5P_DEFAULT, c_buf);
  ret_value = 0;
DONE:
  free(c_buf);
  return ret_value;
}

/*----------------------------------------------------------------------------
 * Name:        h5dfillc_c
 * Purpose:     Call h5fill_c to fill memory buffer with a fill value
 * Inputs:      fill_value - fill value
 *              fill_type_id - fill value datatype identifier
 *              space_id - memory space selection identifier
 *              buf      - memory buffer to fill
 *              mem_type_id - memory buffer dtatype identifier
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, March 12, 2003
 * Modifications:
 *---------------------------------------------------------------------------*/
int_f
nh5dfillc_c (_fcd fill_value, hid_t_f *fill_type_id, hid_t_f *space_id, _fcd buf, hid_t_f *mem_type_id)
{
     int ret_value = -1;
     
     /*
      * Call h5dfill_c  function.
      */
     ret_value = nh5dfill_c(_fcdtocp(fill_value), fill_type_id, space_id, _fcdtocp(buf), mem_type_id);

     return ret_value;
}
/*----------------------------------------------------------------------------
 * Name:        h5dfill_c
 * Purpose:     Call H5Dfill to fill memory buffer with a fill value
 * Inputs:      fill_value - fill value
 *              fill_type_id - fill value datatype identifier
 *              space_id - memory space selection identifier
 *              buf      - memory buffer to fill
 *              mem_type_id - memory buffer dtatype identifier
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, March 12, 2003
 * Modifications:
 *---------------------------------------------------------------------------*/
int_f
nh5dfill_c (void * fill_value, hid_t_f *fill_type_id, hid_t_f *space_id, void * buf, hid_t_f *mem_type_id)

{
     int ret_value = -1;
     herr_t ret;
     hid_t c_fill_type_id;
     hid_t c_mem_type_id;
     hid_t c_space_id;

     c_fill_type_id = (hid_t)*fill_type_id;
     c_mem_type_id = (hid_t)*mem_type_id;
     c_space_id = (hid_t)*space_id;
     
     /*
      * Call H5Dfill function.
      */
     ret = H5Dfill(fill_value, c_fill_type_id, buf, c_mem_type_id, c_space_id);

     if (ret < 0) return ret_value;
     ret_value = 0;
     return ret_value;
}      

/*----------------------------------------------------------------------------
 * Name:        h5dget_space_status_c
 * Purpose:     Call H5Dget_space_status to request dataspace allocation status
 * Inputs:      dset_id - dataset identifier
 * Outputs:     flag - status flag
 * Returns:     0 on success, -1 on failure
 * Programmer:  Elena Pourmal
 *              Wednesday, March 12, 2003
 * Modifications:
 *---------------------------------------------------------------------------*/
int_f
nh5dget_space_status_c ( hid_t_f *dset_id, int_f *flag)

{
     int ret_value = -1;
     herr_t ret;
     hid_t c_dset_id;
     H5D_space_status_t c_flag;

     c_dset_id = (hid_t)*dset_id;
     
     /*
      * Call H5Dget_space_status
      */
     ret = H5Dget_space_status(c_dset_id, &c_flag);

     if (ret < 0) return ret_value;
     *flag = (int_f)c_flag;
     ret_value = 0;
     return ret_value;
}