-/* This file is part of GNU PSPP
- Computes Levene test statistic.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 2004, 2009 Free Software Foundation, Inc.
- Copyright (C) 2004 Free Software Foundation, Inc.
+ 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 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 2 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.
+ 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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "levene.h"
#include <libpspp/str.h>
#include <data/variable.h>
#include <data/procedure.h>
-#include <libpspp/alloc.h>
#include <libpspp/misc.h>
#include "group.h"
#include <math.h>
#include <stdlib.h>
+#include "xalloc.h"
+
/* This module calculates the Levene statistic for variables.
enum mv_class exclude)
{
struct casereader *pass1, *pass2;
- struct ccase c;
+ struct ccase *c;
struct levene_info l;
l.n_dep = n_dep;
casereader_split (reader, &pass1, &pass2);
levene_precalc (&l);
- for (; casereader_read (pass1, &c); case_destroy (&c))
- levene_calc (dict, &c, &l);
+ for (; (c = casereader_read (pass1)) != NULL; case_unref (c))
+ levene_calc (dict, c, &l);
casereader_destroy (pass1);
levene_postcalc (&l);
levene2_precalc(&l);
- for (; casereader_read (pass2, &c); case_destroy (&c))
- levene2_calc (dict, &c, &l);
+ for (; (c = casereader_read (pass2)) != NULL; case_unref (c))
+ levene2_calc (dict, c, &l);
casereader_destroy (pass2);
levene2_postcalc (&l);