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/* This example program is part of Unidata's netCDF library for
scientific data access.
This program (quickly, but not thoroughly) tests the large file
features.
Ed Hartnett, 8/11/4
$Id: quick_large_files.c,v 1.6 2004/09/08 16:53:09 ed Exp $
*/
#include <netcdf.h>
#include <stdio.h>
#include <string.h>
/* This macro handles errors by outputting a message to stdout and
then exiting. */
#define NC_EXAMPLE_ERROR 2 /* This is the exit code for failure. */
#define BAIL(e) do { \
printf("Bailing out in file %s, line %d, error:%s.\n", \
__FILE__, __LINE__, nc_strerror(e)); \
return NC_EXAMPLE_ERROR; \
} while (0)
#define NUMDIMS 1
#define NUMVARS 2
/* This dim len is the max size for an 8-byte type in 64-bit offset
format: (2*32 - 4) / 8, that is, 4 GB minus a bit, on an 8 byte
boundary. */
#define DIM_LEN 536870911
int
main()
{
int ncid, spockid, kirkid, dimids[NUMDIMS];
double val_in, val_out = 999.99;
size_t index[NUMDIMS] = {DIM_LEN-1};
int i, res;
/* Create the netCDF 64-bit offset format file. */
if ((res = nc_create("example.nc", NC_CLOBBER|NC_64BIT_OFFSET, &ncid)))
BAIL(res);
/* Turn off fill mode to speed things up. */
if ((res = nc_set_fill(ncid, NC_NOFILL, NULL)))
BAIL(res);
/* Define dimension. */
if ((res = nc_def_dim(ncid, "longdim", DIM_LEN, dimids)))
BAIL(res);
/* Define two variables. */
if ((res = nc_def_var(ncid, "spock", NC_DOUBLE, NUMDIMS,
dimids, &spockid)))
BAIL(res);
if ((res = nc_def_var(ncid, "kirk", NC_DOUBLE, NUMDIMS,
dimids, &kirkid)))
BAIL(res);
/* We're finished defining metadata. */
if ((res = nc_enddef(ncid)))
BAIL(res);
if ((res = nc_put_var1_double(ncid, kirkid, index, &val_out)))
BAIL(res);
/* We're done! */
if ((res = nc_close(ncid)))
BAIL(res);
return 0;
}
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