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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.
*/
#include "grib_api_internal.h"
/*
* Check that first coefficient have an imaginary part equal to zero.
* philippe.marguinaud@meteo.fr, 2016/02
*/
#include "grib_sh_values.h" /* array 'values' defined here*/
#define ILCHAM 992
#define MTRONC 30
#define STRONC 10
int main(int argc, char* argv[])
{
size_t len;
grib_handle* h;
double zval[ILCHAM];
int m, n, k;
const char* outfile;
ECCODES_ASSERT(argc == 2);
outfile = argv[1];
GRIB_CHECK(((h = grib_handle_new_from_samples(NULL, "sh_ml_grib2")) == NULL), 0);
/* Meteo-France settings */
GRIB_CHECK(grib_set_long(h, "centre", 85), 0);
len = strlen("stretched_rotated_sh");
GRIB_CHECK(grib_set_string(h, "gridType", "stretched_rotated_sh", &len), 0);
GRIB_CHECK(grib_set_long(h, "pentagonalResolutionParameterJ", MTRONC), 0);
GRIB_CHECK(grib_set_long(h, "pentagonalResolutionParameterK", MTRONC), 0);
GRIB_CHECK(grib_set_long(h, "pentagonalResolutionParameterM", MTRONC), 0);
GRIB_CHECK(grib_set_double(h, "stretchingFactor", 2.40000000000000), 0);
GRIB_CHECK(grib_set_double(h, "latitudeOfStretchingPoleInDegrees", 46.4688478326275), 0);
GRIB_CHECK(grib_set_double(h, "longitudeOfStretchingPoleInDegrees", 2.57831007808864), 0);
GRIB_CHECK(grib_set_long(h, "bitsPerValue", 16), 0);
len = strlen("spectral_complex");
GRIB_CHECK(grib_set_string(h, "packingType", "spectral_complex", &len), 0);
GRIB_CHECK(grib_set_long(h, "subSetJ", STRONC), 0);
GRIB_CHECK(grib_set_long(h, "subSetK", STRONC), 0);
GRIB_CHECK(grib_set_long(h, "subSetM", STRONC), 0);
GRIB_CHECK(grib_set_long(h, "unpackedSubsetPrecision", 1), 0);
GRIB_CHECK(grib_set_double_array(h, "values", values, ILCHAM), 0);
len = ILCHAM;
GRIB_CHECK(grib_get_double_array(h, "values", zval, &len), 0);
for (m = 0, k = 0; m < MTRONC + 1; m++) {
for (n = MTRONC - m; n < MTRONC + 1; k++, n++) {
/* Check that imaginary part of first coefficients is zero */
if ((m == 0) && (zval[2 * k + 1] != 0.)) {
printf("Imaginary part of coefficient (m=%d,n=%d) should be zero\n", m, n);
return 1;
}
}
}
GRIB_CHECK(grib_write_message(h, outfile, "w"), 0);
GRIB_CHECK(grib_handle_delete(h), 0);
printf("ALL OK\n");
return 0;
}
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