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
|
/*! Test for NCF-331. Added May 11, 2015.
* Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
* 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
* 2015, 2016, 2017, 2018
* University Corporation for Atmospheric Research/Unidata.
*
* See \ref copyright file for more info.
* See the following links for more information:
*
* o Issue on GitHub: https://github.com/Unidata/netcdf-c/issues/112
* o Issue in JIRA: https://bugtracking.unidata.ucar.edu/browse/NCF-331
*
* Test contributed by Jeff Whitaker
*/
#include <nc_tests.h>
#include <string.h>
#include "nc_logging.h"
#undef BE_DEBUG
#ifdef TESTNCZARR
#include "test_utils.h"
#define FILE_NAME_NC "file://tmp_h5_endians.file#mode=nczarr,file"
#else
#define FILE_NAME_NC "tst_h5_endians.nc"
#endif
#define NDIM 10
#define NLON 20
#define DIM_NAME "x"
#define DIM_LEN 4
#define GRP_NAME "grp"
#define LE_FLOAT_VARNAME "fl_le"
#define BE_FLOAT_VARNAME "fl_be"
#define LE_INT_VARNAME "int_le"
#define BE_INT_VARNAME "int_be"
#define LE_DBL_VARNAME "dbl_le"
#define BE_DBL_VARNAME "dbl_be"
#if defined BE_DEBUG || defined TESTNCZARR
static float
f32swap(float x)
{
union {
unsigned char bytes[4];
float f;
} u;
unsigned char c;
u.f = x;
c = u.bytes[0]; u.bytes[0] = u.bytes[3]; u.bytes[3] = c;
c = u.bytes[1]; u.bytes[1] = u.bytes[2]; u.bytes[2] = c;
return u.f;
}
static double
f64swap(double x)
{
union {
unsigned char bytes[8];
double d;
} u;
unsigned char c;
u.d = x;
c = u.bytes[0]; u.bytes[0] = u.bytes[7]; u.bytes[7] = c;
c = u.bytes[1]; u.bytes[1] = u.bytes[6]; u.bytes[6] = c;
c = u.bytes[2]; u.bytes[2] = u.bytes[5]; u.bytes[5] = c;
c = u.bytes[3]; u.bytes[3] = u.bytes[4]; u.bytes[4] = c;
return u.d;
}
#endif
int main() {
int ncid, dimid;
int le_float_varid;
int be_float_varid;
int le_int_varid;
int be_int_varid;
int le_dbl_varid;
int be_dbl_varid;
int ed;
int failures = 0;
int retval;
printf("* Checking that endianness is properly read from file.\n");
printf("** Generating test files.\n");
/*
* 1. Create a netcdf file with endianness as desired.
*/
{
printf("*** Creating a file via netcdf API: %s.\n",FILE_NAME_NC);
if ((retval = nc_create(FILE_NAME_NC, NC_NETCDF4 | NC_CLOBBER, &ncid)))
return retval;
if ((retval = nc_def_dim(ncid, DIM_NAME, NDIM, &dimid)))
return retval;
/* Little-Endian Float */
if ((retval = nc_def_var(ncid, LE_FLOAT_VARNAME, NC_FLOAT, 1, &dimid, &le_float_varid)))
return retval;
if ((retval = nc_def_var_endian(ncid, le_float_varid, NC_ENDIAN_LITTLE)))
return retval;
/* Big-Endian Float */
if ((retval = nc_def_var(ncid, BE_FLOAT_VARNAME, NC_FLOAT, 1, &dimid, &be_float_varid)))
return retval;
if ((retval = nc_def_var_endian(ncid, be_float_varid, NC_ENDIAN_BIG)))
return retval;
/* Little-Endian Int */
if ((retval = nc_def_var(ncid, LE_INT_VARNAME, NC_INT, 1, &dimid, &le_int_varid)))
return retval;
if ((retval = nc_def_var_endian(ncid, le_int_varid, NC_ENDIAN_LITTLE)))
return retval;
/* Big-Endian Int */
if ((retval = nc_def_var(ncid, BE_INT_VARNAME, NC_INT, 1, &dimid, &be_int_varid)))
return retval;
if ((retval = nc_def_var_endian(ncid, be_int_varid, NC_ENDIAN_BIG)))
return retval;
/* Little-Endian Double */
if ((retval = nc_def_var(ncid, LE_DBL_VARNAME, NC_DOUBLE, 1, &dimid, &le_dbl_varid)))
return retval;
if ((retval = nc_def_var_endian(ncid, le_dbl_varid, NC_ENDIAN_LITTLE)))
return retval;
/* Big-Endian Double */
if ((retval = nc_def_var(ncid, BE_DBL_VARNAME, NC_DOUBLE, 1, &dimid, &be_dbl_varid)))
return retval;
if ((retval = nc_def_var_endian(ncid, be_dbl_varid, NC_ENDIAN_BIG)))
return retval;
if ((retval = nc_close(ncid)))
return retval;
}
/*
* 2. Reopen netcdf-generated file, check to see if the endianness attribute
* exists.
*/
printf("** Checking test files.\n");
{
ncid = 0;
le_float_varid = 0;
be_float_varid = 0;
le_int_varid = 0;
be_int_varid = 0;
le_dbl_varid = 0;
be_dbl_varid = 0;
printf("*** %s\n",FILE_NAME_NC);
if ((retval = nc_open(FILE_NAME_NC, NC_NETCDF4 | NC_NOWRITE, &ncid)))
return retval;
if ((retval = nc_inq_varid(ncid,LE_FLOAT_VARNAME,&le_float_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,BE_FLOAT_VARNAME,&be_float_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,LE_INT_VARNAME,&le_int_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,BE_INT_VARNAME,&be_int_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,LE_DBL_VARNAME,&le_dbl_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,BE_DBL_VARNAME,&be_dbl_varid)))
return retval;
printf("\tLittle-Endian Float...\t");
if ((retval = nc_inq_var_endian(ncid,le_float_varid,&ed)))
return retval;
if(ed == NC_ENDIAN_LITTLE) printf("passed\n"); else {printf("failed\n"); failures++;}
printf("\tBig-Endian Float...\t");
if ((retval = nc_inq_var_endian(ncid,be_float_varid,&ed)))
return retval;
if(ed == NC_ENDIAN_BIG) printf("passed\n"); else {printf("failed\n"); failures++;}
printf("\tLittle-Endian Int...\t");
if ((retval = nc_inq_var_endian(ncid,le_int_varid,&ed)))
return retval;
if(ed == NC_ENDIAN_LITTLE) printf("passed\n"); else {printf("failed\n"); failures++;}
printf("\tBig-Endian Int...\t");
if ((retval = nc_inq_var_endian(ncid,be_int_varid,&ed)))
return retval;
if(ed == NC_ENDIAN_BIG) printf("passed\n"); else {printf("failed\n"); failures++;}
printf("\tLittle-Endian Double...\t");
if ((retval = nc_inq_var_endian(ncid,le_dbl_varid,&ed)))
return retval;
if(ed == NC_ENDIAN_LITTLE) printf("passed\n"); else {printf("failed\n"); failures++;}
printf("\tBig-Endian Double...\t");
if ((retval = nc_inq_var_endian(ncid,be_dbl_varid,&ed)))
return retval;
if(ed == NC_ENDIAN_BIG) printf("passed\n"); else {printf("failed\n"); failures++;}
if ((retval = nc_close(ncid)))
return retval;
}
/*
* 3. Reopen netcdf-generated file, write data and reread.
*/
printf("** Read/Write test files.\n");
{
ncid = 0;
le_float_varid = 0;
be_float_varid = 0;
le_int_varid = 0;
be_int_varid = 0;
le_dbl_varid = 0;
be_dbl_varid = 0;
printf("*** %s\n",FILE_NAME_NC);
if ((retval = nc_open(FILE_NAME_NC, NC_NETCDF4 | NC_WRITE, &ncid)))
return retval;
if ((retval = nc_inq_varid(ncid,LE_FLOAT_VARNAME,&le_float_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,BE_FLOAT_VARNAME,&be_float_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,LE_INT_VARNAME,&le_int_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,BE_INT_VARNAME,&be_int_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,LE_DBL_VARNAME,&le_dbl_varid)))
return retval;
if ((retval = nc_inq_varid(ncid,BE_DBL_VARNAME,&be_dbl_varid)))
return retval;
{
int i, failed;
int idata_in[NDIM];
float fdata_in[NDIM];
double ddata_in[NDIM];
int idata_le_out[NDIM];
float fdata_le_out[NDIM];
double ddata_le_out[NDIM];
int idata_be_out[NDIM];
#if defined BE_DEBUG || defined TESTNCZARR
float fdata_be_out[NDIM];
double ddata_be_out[NDIM];
#endif
/* Setup data in/out */
for(i=0;i<NDIM;i++) {
idata_in[i] = (int)i;
fdata_in[i] = (float)i;
ddata_in[i] = (double)i;
idata_le_out[i] = 0;
fdata_le_out[i] = 0.0f;
ddata_le_out[i] = 0.0;
idata_be_out[i] = 0;
#if defined BE_DEBUG || defined TESTNCZARR
fdata_be_out[i] = 0.0f;
ddata_be_out[i] = 0.0;
#endif
}
printf("\tLittle-Endian Float...\t");
if ((retval = nc_put_var(ncid,le_float_varid,fdata_in)))
return retval;
if ((retval = nc_get_var(ncid,le_float_varid,fdata_le_out)))
return retval;
for(failed=0,i=0;i<NDIM;i++) {if(fdata_in[i] != fdata_le_out[i]) {printf("failed\n"); failures++; failed++; break;}}
if(!failed) printf("passed\n");
#if defined BE_DEBUG || defined TESTNCZARR
/* There appears to be a bug in the handling of big-endian floats and doubles */
printf("\tBig-Endian Float...\t");
if ((retval = nc_put_var(ncid,be_float_varid,fdata_in)))
return retval;
if ((retval = nc_get_var(ncid,be_float_varid,fdata_be_out)))
return retval;
for(i=0;i<NDIM;i++) {
float f = f32swap(fdata_be_out[i]);
fprintf(stderr,"[%d] %f\n",i,f);
}
for(failed=0,i=0;i<NDIM;i++) {
if(fdata_in[i] != fdata_be_out[i]) {
printf("failed\n"); failures++; failed++; break;
}
}
if(!failed) printf("passed\n");
#endif
printf("\tLittle-Endian Int...\t");
if ((retval = nc_put_var(ncid,le_int_varid,idata_in)))
return retval;
if ((retval = nc_get_var(ncid,le_int_varid,idata_le_out)))
return retval;
for(failed=0,i=0;i<NDIM;i++) {if(idata_in[i] != idata_le_out[i]) {printf("failed\n"); failures++; failed++; break;}}
if(!failed) printf("passed\n");
printf("\tBig-Endian Int...\t");
if ((retval = nc_put_var(ncid,be_int_varid,idata_in)))
return retval;
if ((retval = nc_get_var(ncid,be_int_varid,idata_be_out)))
for(failed=0,i=0;i<NDIM;i++) {if(idata_in[i] != idata_be_out[i]) {printf("failed\n"); failures++; failed++; break;}}
if(!failed) printf("passed\n");
printf("\tLittle-Endian Double...\t");
if ((retval = nc_put_var(ncid,le_dbl_varid,ddata_in)))
return retval;
if ((retval = nc_get_var(ncid,le_dbl_varid,ddata_le_out)))
return retval;
for(failed=0,i=0;i<NDIM;i++) {if(ddata_in[i] != ddata_le_out[i]) {printf("failed\n"); failures++; failed++; break;}}
if(!failed) printf("passed\n");
#if defined BE_DEBUG || defined TESTNCZARR
/* There appears to be a bug in the handling of big-endian floats and doubles */
printf("\tBig-Endian Double...\t");
if ((retval = nc_put_var(ncid,be_dbl_varid,ddata_in)))
return retval;
if ((retval = nc_get_var(ncid,be_dbl_varid,ddata_be_out)))
return retval;
for(i=0;i<NDIM;i++) {
double d = f64swap(ddata_be_out[i]);
fprintf(stderr,"[%d] %lf\n",i,d);
}
for(failed=0,i=0;i<NDIM;i++) {if(ddata_in[i] != ddata_be_out[i]) {printf("failed\n"); failures++; failed++; break;}}
if(!failed) printf("passed\n");
#endif
if ((retval = nc_close(ncid)))
return retval;
}
}
printf("** Failures Returned: [%d]\n",failures);
return failures;
}
|
