/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997-9, 2000, 2010 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
#include <assert.h>
#include <math.h>
#include <stdlib.h>
-#include <libpspp/alloc.h>
#include <libpspp/misc.h>
+#include <data/val-type.h>
#include <data/value.h>
+#include "xalloc.h"
+
#include "gettext.h"
#define _(msgid) gettext (msgid)
\f
/* From _SPSS Statistical Algorithms, 2nd ed.,
0-918469-89-9, section "DESCRIPTIVES". */
- if (fabs (*variance) >= 1e-20)
+ if (fabs (s2) >= 1e-20)
{
if (max_moment >= MOMENT_SKEWNESS && skewness != NULL && w > 2.)
{
double s3 = s2 * sqrt (s2);
double g1 = (w * d3) / ((w - 1.0) * (w - 2.0) * s3);
- if (finite (g1))
+ if (isfinite (g1))
*skewness = g1;
}
if (max_moment >= MOMENT_KURTOSIS && kurtosis != NULL && w > 3.)
double den = (w - 2.) * (w - 3.) * pow2 (s2);
double g2 = (w * (w + 1) * d4 / (w - 1.) / den
- 3. * pow2 (d2) / den);
- if (finite (g2))
+ if (isfinite (g2))
*kurtosis = g2;
}
}