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/*
* (C) Copyright 2005- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
*
* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
*/
/*
* Description: compare values retrieved with grib_get_double_array and
* grib_get_double_element
*
* Author: Cristian D. Codorean
*
*/
#include "grib_api_internal.h"
#undef NDEBUG
#include <assert.h>
int main(int argc, char** argv)
{
int err = 0, i = 0;
double* values = NULL;
size_t values_len = 0;
double element_value = 0;
FILE* in = NULL;
char* filename = NULL;
grib_handle* h = NULL;
assert(argc == 2);
filename = argv[1];
in = fopen(filename, "rb");
assert(in);
/* create new handle from a message in a file*/
h = grib_handle_new_from_file(0, in, &err);
if (h == NULL) {
printf("Error: unable to create handle from file %s\n", filename);
return 1;
}
/* get the size of the values array */
GRIB_CHECK(grib_get_size(h, "values", &values_len), 0);
values = (double*)malloc(values_len * sizeof(double));
/* get data values*/
GRIB_CHECK(grib_get_double_array(h, "values", values, &values_len), 0);
if (values_len < 100) exit(1);
for (i = 0; i < 100; i++) {
/* get a particular data value */
GRIB_CHECK(grib_get_double_element(h, "values", i, &element_value), 0);
if (element_value != values[i]) {
printf("ERROR: element_value=%g != values[%d]=%g\n", element_value, i, values[i]);
exit(1);
}
}
free(values);
grib_handle_delete(h);
fclose(in);
return 0;
}
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