X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffactor_stats.c;h=4508caf889c3c4eceed0756a048089ddb688043c;hb=dbb0228a4c98cbf4756ba651fda158c1565b3b55;hp=8109a2171f0774f25a3087ab156e0f40af475d03;hpb=a19e7749cdb8713316fde220f2fc9a5ad5dc79ed;p=pspp

diff --git a/src/factor_stats.c b/src/factor_stats.c
index 8109a2171f..4508caf889 100644
--- a/src/factor_stats.c
+++ b/src/factor_stats.c
@@ -15,8 +15,8 @@ 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., 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
 
 #include "factor_stats.h"
 #include "config.h"
@@ -44,6 +44,7 @@ metrics_precalc(struct metrics *m)
   m->min = DBL_MAX;
   m->max = -DBL_MAX;
 
+  m->histogram = 0;
 
   m->moments = moments1_create(MOMENT_KURTOSIS);
 
@@ -141,6 +142,13 @@ metrics_postcalc(struct metrics *m)
   m->wvp = (struct weighted_value **) hsh_sort(m->ordered_data);
   m->n_data = hsh_count(m->ordered_data);
 
+  /* Trimmed mean calculation */
+  if ( m->n_data <= 1 ) 
+    {
+      m->trimmed_mean = m->mean;
+      return;
+    }
+
   m->histogram = histogram_create(10, m->min, m->max);
 
   for ( i = 0 ; i < m->n_data ; ++i ) 
@@ -149,13 +157,6 @@ metrics_postcalc(struct metrics *m)
       gsl_histogram_accumulate(m->histogram, wv[i]->v.f, wv[i]->w);
     }
 
-  /* Trimmed mean calculation */
-  if ( m->n_data <= 1 ) 
-    {
-      m->trimmed_mean = m->mean;
-      return;
-    }
-
   tc = m->n * 0.05 ;
   k1 = -1;
   k2 = -1;
@@ -272,7 +273,8 @@ metrics_destroy(struct metrics *m)
 {
   hsh_destroy(m->ordered_data);
   hsh_destroy(m->ptile_hash);
-  gsl_histogram_free(m->histogram);
+  if ( m-> histogram ) 
+    gsl_histogram_free(m->histogram);
 }
 
 void