/* PSPP - a program for statistical analysis.
- Copyright (C) 2004, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2004, 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 "histogram.h"
-#include <gl/xalloc.h>
-#include <libpspp/assertion.h>
-#include <libpspp/cast.h>
+#include "math/histogram.h"
#include <gsl/gsl_histogram.h>
-#include "chart-geometry.h"
#include <math.h>
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "math/chart-geometry.h"
+
+#include "gl/xalloc.h"
void
histogram_add (struct histogram *h, double y, double c)
int n = ceil (max / (bin_width_2) ) ;
- assert (max > min);
+ assert (max >= min);
if ( ! (n % 2 ) ) n++;
upper_limit = n * bin_width_2;