math: Avoid unneeded extra allocations for fixed-size data structures.

[pspp] / src / math / tukey-hinges.c

diff --git a/src/math/tukey-hinges.c b/src/math/tukey-hinges.c
index c483a508c56eff590d4b35e6ac58bf8fb8d4b558..b59b878ba64991c2bea385553e24c8e058ab8c2e 100644 (file)
--- a/src/math/tukey-hinges.c
+++ b/src/math/tukey-hinges.c
@@ -64,24 +64,21 @@ static void
 destroy (struct statistic *s)
 {
   struct tukey_hinges *th = UP_CAST (s, struct tukey_hinges, parent.parent);
-  struct order_stats *os = &th->parent;
-
-  free (os->k);
-  free (s);
+  free (th);
 };
 
 struct tukey_hinges *
 tukey_hinges_create (double W, double c_min)
 {
   double d;
-  struct tukey_hinges *th = xzalloc (sizeof (*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 (3, sizeof (*os->k));
+  os->k = th->k;
 
   if (c_min >= 1.0)
     {