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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: test setting the number of bits per value before decoding and then encoding;
* setting the wrong number of bpv should result in an error
*/
#include "grib_api_internal.h"
static double compare_double_absolute(double a, double b, double tolerance)
{
double ret = 0;
double d = fabs(a - b);
if (d > tolerance) ret = d;
return ret;
}
static int check_error_code(int err)
{
if (err == GRIB_INVALID_BPV || err == GRIB_DECODING_ERROR)
return GRIB_SUCCESS;
return GRIB_INVALID_ARGUMENT;
}
int main(int argc, char** argv)
{
int err = 0, i;
size_t values_len = 0;
const double tolerance = 1e-5;
size_t slong = sizeof(long) * 8;
ECCODES_ASSERT(argc == 2);
char* filename = argv[1];
for (i = 0; i < 255; i++) {
FILE* in = fopen(filename, "rb");
ECCODES_ASSERT(in);
grib_handle* h = grib_handle_new_from_file(0, in, &err);
ECCODES_ASSERT(h);
/* get the size of the values array*/
GRIB_CHECK(grib_get_size(h, "values", &values_len), 0);
double* values = (double*)malloc(values_len * sizeof(double));
err = grib_get_double_array(h, "values", values, &values_len);
if (compare_double_absolute(values[0], 2.7900000000e+02, tolerance) != 0)
printf("oops i=%d values[0]=%g\n", i, values[0]);
if (compare_double_absolute(values[1], 2.7996093750e+02, tolerance) != 0)
printf("oops i=%d values[1]=%g\n", i, values[1]);
GRIB_CHECK(grib_set_long(h, "bitsPerValue", i), 0);
err = grib_set_double_array(h, "values", values, values_len);
free(values);
values = 0;
/*
* check if encoding of the data fails when the number of bpv
* is not supported; bpv allowed on decoding is bpv < size of long
*/
if (i < slong && err == 0) {
/* do nothing */
}
else if (i >= slong && check_error_code(err) == GRIB_SUCCESS) {
/* do nothing */
}
else {
fprintf(stderr, "Error decoding when bpv=%d. Error message:%s\n", i, grib_get_error_message(err));
return 1;
}
values = (double*)malloc(values_len * sizeof(double));
err = grib_get_double_array(h, "values", values, &values_len);
/*
* check if decoding of the data fails when the number of bpv
* is not supported; bpv allowed on decoding is bpv <= size of long
*/
if (i < slong && err == 0) {
/* do nothing */
}
else if (i >= slong && check_error_code(err) == GRIB_SUCCESS) {
/* do nothing */
}
else {
fprintf(stderr, "Error decoding when bpv=%d. Error message:%s\n", i, grib_get_error_message(err));
return 1;
}
free(values);
values = 0;
grib_handle_delete(h);
h = 0;
fclose(in);
}
grib_context_delete(grib_context_get_default());
return 0;
}
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