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https://github.com/Unidata/netcdf-c.git
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354 lines
9.8 KiB
C
354 lines
9.8 KiB
C
/*********************************************************************
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* Copyright 1993, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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* $Header: /upc/share/CVS/netcdf-3/nctest/vardef.c,v 1.18 2009/10/28 18:30:50 dmh Exp $
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*********************************************************************/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h> /* for free() */
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#ifndef NO_FLOAT_H
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#include <float.h> /* for FLT_EPSILON, DBL_EPSILON */
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#endif /* NO_FLOAT_H */
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#include <netcdf.h>
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#include "testcdf.h" /* defines in-memory test cdf structure */
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#include "emalloc.h"
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#include "add.h" /* functions to update in-memory netcdf */
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#include "error.h"
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#include "tests.h"
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#define LEN_OF(array) ((sizeof array) / (sizeof array[0]))
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static float float_eps;
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static double double_eps;
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static float
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float_epsilon()
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{
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float float_eps;
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#ifndef NO_FLOAT_H
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float_eps = FLT_EPSILON;
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#else /* NO_FLOAT_H */
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{
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float etop, ebot, eps;
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float one = 1.0;
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float two = 2.0;
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etop = 1.0;
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ebot = 0.0;
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eps = ebot + (etop - ebot)/two;
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while (eps != ebot && eps != etop) {
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float epsp1;
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epsp1 = one + eps;
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if (epsp1 > one)
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etop = eps;
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else
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ebot = eps;
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eps = ebot + (etop - ebot)/two;
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}
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float_eps = two * etop;
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}
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#endif /* NO_FLOAT_H */
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return float_eps;
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}
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static double
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double_epsilon()
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{
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double double_eps;
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#ifndef NO_FLOAT_H
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double_eps = DBL_EPSILON;
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#else /* NO_FLOAT_H */
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{
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double etop, ebot, eps;
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double one = 1.0;
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double two = 2.0;
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etop = 1.0;
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ebot = 0.0;
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eps = ebot + (etop - ebot)/two;
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while (eps != ebot && eps != etop) {
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double epsp1;
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epsp1 = one + eps;
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if (epsp1 > one)
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etop = eps;
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else
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ebot = eps;
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eps = ebot + (etop - ebot)/two;
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}
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double_eps = two * etop;
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}
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#endif /* NO_FLOAT_H */
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return double_eps;
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}
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static void
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init_epsilons()
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{
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float_eps = float_epsilon();
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double_eps = double_epsilon();
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}
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/*
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* Test ncvardef
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* check that proper define worked with ncvarinq
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* check that returned id is one more than previous id
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* try redefining an existing variable, check error
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* try adding scalar variable (no dimensions)
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* try with bad datatype, check error
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* try with bad number of dimensions, check error
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* try with bad dimension ids, check error
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* try in data mode, check error
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*/
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int
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test_ncvardef(path)
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const char *path; /* name of writable netcdf file to open */
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{
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int nerrs = 0;
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int cdfid; /* netcdf id */
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static char pname[] = "test_ncvardef";
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int id, iv;
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static struct cdfvar va[] = { /* variables of all shapes and sizes */
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{"bytev", NC_BYTE, 6, ___, 0},
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{"charv", NC_CHAR, 5, ___, 0},
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{"shortv", NC_SHORT, 4, ___, 0},
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{"longv", NC_LONG, 3, ___, 0},
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{"floatv", NC_FLOAT, 2, ___, 0},
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{"doublev", NC_DOUBLE, 1, ___, 0},
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{"scalarv", NC_DOUBLE, 0, ___, 0}
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};
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int nv = LEN_OF(va); /* number of variables to define */
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int va_id[LEN_OF(va)]; /* variable ids */
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static struct cdfvar tmp = /* variable for testing bad types, etc. */
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{"tmpv", NC_DOUBLE, 1, ___, 0};
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/* if d5 >= 91 in following, problem on machines with 16-bit ints ??? */
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static struct cdfdim di[] = { /* a bunch of dimensions */
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{"d0", 2}, {"d1",3}, {"d2",5}, {"d3", 6}, {"d4", 4}, {"d5", 31}};
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int nd = LEN_OF(di); /* number of dimensions */
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int di_id[LEN_OF(di)]; /* dimension ids */
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(void) fprintf(stderr, "*** Testing %s ...\t", &pname[5]);
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init_epsilons();
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if ((cdfid = ncopen(path, NC_WRITE)) == -1) {
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error("%s: ncopen failed", pname);
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return ++nerrs;
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}
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/* opened, defining a variable should fail in data mode */
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if (ncvardef(cdfid, va[0].name, va[0].type, va[0].ndims, va[0].dims)
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!= -1) {
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error("%s: ncvardef should have failed in data mode", pname);
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ncclose(cdfid); return ++nerrs;
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}
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/* enter define mode */
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if (ncredef(cdfid) == -1) {
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error("%s: cdredef failed", pname);
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ncclose(cdfid); return ++nerrs;
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}
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/* Add nd more dimensions */
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for (id = 0; id < nd; id++) {
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if ((di_id[id] = ncdimdef(cdfid, di[id].name, di[id].size)) == -1) {
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error("%s: ncdimdef failed for %s, size %d",
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pname, di[id].name, di[id].size);
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ncclose(cdfid); return ++nerrs;
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}
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add_dim(&test, &di[id]); /* keep in-memory netcdf in sync */
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}
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tmp.dims = (int *) emalloc(sizeof(int) * MAX_VAR_DIMS);
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tmp.name = (char *) emalloc(MAX_NC_NAME);
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/* in define mode, add variables of each type with various shapes */
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for (iv = 0; iv < nv; iv++) {
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/* set shape to use subset of dimensions previously defined */
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va[iv].dims = (int *) emalloc(sizeof(int) * va[iv].ndims);
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for (id = 0; id < va[iv].ndims; id++)
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va[iv].dims[id] = di_id[id];
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if ((va_id[iv] = ncvardef(cdfid, va[iv].name, va[iv].type,
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va[iv].ndims, va[iv].dims)) == -1) {
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error("%s: ncvardef failed", pname);
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errvar(&test,&va[iv]); /* prints details about variable */
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ncclose(cdfid); return ++nerrs;
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}
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add_var(&test, &va[iv]); /* keep in-memory netcdf in sync */
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/* check that var id returned is one more than previous var id */
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if (va_id[iv] != test.nvars - 1) {
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error("%s: ncvardef returned %d for var id, expected %d",
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pname, va_id[iv], test.nvars-1);
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ncclose(cdfid); return ++nerrs;
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}
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/* use ncvarinq to get values just set and compare values */
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if (ncvarinq(cdfid, va_id[iv], tmp.name, &tmp.type,
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&tmp.ndims, tmp.dims, &tmp.natts) == -1) {
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error("%s: ncvarinq failed", pname);
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errvar(&test,&va[iv]); /* prints details about variable */
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ncclose(cdfid); return ++nerrs;
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}
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if (strcmp(tmp.name, va[iv].name) != 0 ||
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tmp.type != va[iv].type ||
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tmp.ndims != va[iv].ndims ||
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tmp.natts != va[iv].natts) {
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error("%s: ncvardef and ncvarinq don't agree for %s",
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pname, va[iv].name);
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nerrs++;
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errvar(&test,&va[iv]);
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errvar(&test,&tmp);
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}
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for (id = 0; id < va[iv].ndims; id++) {
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if (tmp.dims[id] != va[iv].dims[id]) {
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error("%s: ncvardef and ncvarinq don't agree on shape of %s",
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pname, va[iv].name);
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nerrs++;
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errvar(&test,&va[iv]);
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errvar(&test,&tmp);
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}
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}
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}
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/* try adding same variable again, this should fail */
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if (ncvardef(cdfid, va[0].name, va[0].type,
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va[0].ndims, va[0].dims) != -1) {
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error("%s: ncvardef should not allow redefinition", pname);
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ncclose(cdfid); return ++nerrs;
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}
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/* try bad type, should fail */
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if (ncvardef(cdfid, "badtype", BAD_TYPE, va[0].ndims, va[0].dims) != -1) {
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error("%s: ncvardef should have failed on bad type", pname);
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ncclose(cdfid); return ++nerrs;
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}
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/* try bad ndims, should fail */
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if (ncvardef(cdfid, "badndims", va[0].type, -1, va[0].dims) != -1) {
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error("%s: ncvardef should have failed on bad ndims", pname);
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ncclose(cdfid); return ++nerrs;
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}
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/* try bad ids in dims vector, should fail */
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id = va[0].dims[0];
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va[0].dims[va[0].ndims-1] = -1;
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if (ncvardef(cdfid, "baddims", va[0].type, va[0].ndims, va[0].dims)
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!= -1) {
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error("%s: ncvardef should have failed on negative dim id in dims",
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pname);
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ncclose(cdfid); return ++nerrs;
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}
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if (ncendef (cdfid) == -1) {
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error("%s: ncendef failed", pname);
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ncclose(cdfid); return ++nerrs;
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}
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/* try reading a value of each type, should get appropriate fill value */
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for (iv = 0; iv < nv; iv++) {
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static long where[] = {0,0,0,0,0,0};
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switch(va[iv].type) {
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case NC_BYTE:
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{
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char val, fillval = FILL_BYTE;
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if (ncvarget1(cdfid, va_id[iv], where, (void *) &val) != -1) {
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if (val != fillval) {
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error("%s: unwritten byte not FILL_BYTE", pname);
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nerrs++;
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}
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} else {
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error("%s: ncvarget1 failure for byte", pname);
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nerrs++;
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}
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}
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break;
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case NC_CHAR:
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{
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char val, fillval = FILL_CHAR;
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if (ncvarget1(cdfid, va_id[iv], where, (void *) &val) != -1) {
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if (val != fillval) {
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error("%s: unwritten char not FILL_CHAR", pname);
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nerrs++;
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}
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} else {
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error("%s: ncvarget1 failure for char", pname);
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nerrs++;
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}
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}
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break;
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case NC_SHORT:
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{
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short val, fillval = FILL_SHORT;
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if (ncvarget1(cdfid, va_id[iv], where, (void *) &val) != -1) {
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if (val != fillval) {
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error("%s: unwritten short not FILL_SHORT", pname);
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nerrs++;
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}
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} else {
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error("%s: ncvarget1 failure for short", pname);
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nerrs++;
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}
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}
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break;
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case NC_LONG:
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{
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nclong val, fillval = FILL_LONG;
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if (ncvarget1(cdfid, va_id[iv], where, (void *) &val) != -1) {
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if (val != fillval) {
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error("%s: unwritten long not FILL_LONG", pname);
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nerrs++;
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}
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} else {
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error("%s: ncvarget1 failure for long", pname);
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nerrs++;
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}
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}
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break;
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#define absval(x) ( (x) < 0 ? -(x) : (x) )
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case NC_FLOAT:
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{
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float val, fillval = FILL_FLOAT;
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if (ncvarget1(cdfid, va_id[iv], where, (void *) &val) != -1) {
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if (absval(val-fillval) > absval(float_eps * fillval)) {
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error("%s: unwritten float not FILL_FLOAT", pname);
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nerrs++;
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}
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} else {
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error("%s: ncvarget1 failure for float", pname);
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nerrs++;
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}
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}
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break;
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case NC_DOUBLE:
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{
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double val, fillval = FILL_DOUBLE;
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if (ncvarget1(cdfid, va_id[iv], where, (void *) &val) != -1) {
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#define DBL_FUDGE 8.0 /* can be 1.0 on every platform we've seen
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except for VAX/Ultrix 4.3 with cc */
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if (absval(val-fillval) > DBL_FUDGE * absval(double_eps * fillval)) {
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error("%s: unwritten double not FILL_DOUBLE", pname);
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nerrs++;
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}
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} else {
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error("%s: ncvarget1 failure for double", pname);
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nerrs++;
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}
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}
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break;
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default: break;
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}
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}
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if (ncclose (cdfid) == -1) {
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error("%s: ncclose failed", pname);
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return ++nerrs;
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}
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free (tmp.dims);
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free (tmp.name);
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for (iv = 0; iv < nv; iv++)
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if (va[iv].dims)
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free(va[iv].dims);
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if (nerrs > 0)
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(void) fprintf(stderr,"FAILED! ***\n");
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else
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(void) fprintf(stderr,"ok ***\n");
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return nerrs;
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}
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