/* PSPP - a program for statistical analysis.
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008, 2009, 2011 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
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
-#include "tukey-hinges.h"
-#include <math/order-stats.h>
-#include <gl/xalloc.h>
-#include <libpspp/assertion.h>
+#include "math/tukey-hinges.h"
+
#include <math.h>
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "math/order-stats.h"
+
+#include "gl/xalloc.h"
+
void
tukey_hinges_calculate (const struct tukey_hinges *th, double hinge[3])
{
if (a_star[i] < 1)
{
- if (os->k[i].c_p1 >= 1 )
+ if (os->k[i].c_p1 >= 1)
{
hinge[i] = (1 - a_star[i]) * os->k[i].y
+ a_star[i] * os->k[i].y_p1;
static void
destroy (struct statistic *s)
{
- struct order_stats *os = (struct order_stats *) s;
-
- free (os->k);
- free (s);
+ struct tukey_hinges *th = UP_CAST (s, struct tukey_hinges, parent.parent);
+ free (th);
};
-struct statistic *
+struct tukey_hinges *
tukey_hinges_create (double W, double c_min)
{
double d;
- struct tukey_hinges *th = xzalloc (sizeof (*th));
- struct order_stats *os = (struct order_stats *) th;
- struct statistic *stat = (struct statistic *) th;
+ struct tukey_hinges *th = XZALLOC (struct tukey_hinges);
+ struct order_stats *os = &th->parent;
+ struct statistic *stat = &os->parent;
assert (c_min >= 0);
os->n_k = 3;
- os->k = xcalloc (sizeof (*os->k), 3);
+ os->k = th->k;
- if ( c_min >= 1.0)
+ if (c_min >= 1.0)
{
d = floor ((W + 3) / 2.0) / 2.0;
stat->destroy = destroy;
- return stat;
+ return th;
}