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