/* filter/test.c
 * 
 * Copyright (C) 2018 Patrick Alken
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include <config.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <gsl/gsl_math.h>
#include <gsl/gsl_sort.h>
#include <gsl/gsl_statistics.h>
#include <gsl/gsl_test.h>
#include <gsl/gsl_rng.h>
#include <gsl/gsl_sort.h>
#include <gsl/gsl_ieee_utils.h>
#include <gsl/gsl_filter.h>

/* compare two vectors */
static void
compare_vectors(const double tol, const gsl_vector * v, const gsl_vector * expected,
                const char * desc)
{
  const size_t n = v->size;
  size_t i;

  for (i = 0; i < n; ++i)
    {
      double vi = gsl_vector_get(v, i);
      double ui = gsl_vector_get(expected, i);

      gsl_test_rel(vi, ui, tol, "%s i=%zu", desc, i);
    }
}

/* generate random vector with elements in [-1,1] */
static void
random_vector(gsl_vector * v, gsl_rng * r)
{
  size_t i;

  for (i = 0; i < v->size; ++i)
    {
      double vi = 2.0 * gsl_rng_uniform(r) - 1.0; /* in [-1,1] */
      gsl_vector_set(v, i, vi);
    }
}

#include "test_impulse.c"
#include "test_gaussian.c"
#include "test_median.c"
#include "test_rmedian.c"

int
main()
{
  gsl_rng * r = gsl_rng_alloc(gsl_rng_default);

  test_gaussian(r);

  test_impulse(r);
  test_median(r);
  test_rmedian(r);

  gsl_rng_free(r);

  exit (gsl_test_summary());
}