ref count the linreg structure so as to avoid double free problems

[pspp] / src / math / moments.c

diff --git a/src/math/moments.c b/src/math/moments.c
index e289e8aec0ef27c2372e2c007eeb30e6b2f6d469..83cbbe4ca1fb3e4c2d4e2a6497ed84ced68b0c31 100644 (file)
--- a/src/math/moments.c
+++ b/src/math/moments.c
@@ -461,6 +461,13 @@ moments1_destroy (struct moments1 *m)
   free (m);
 }
 \f
+
+double
+calc_semean (double var, double W)
+{
+  return sqrt (var / W);
+}
+
 /* Returns the standard error of the skewness for the given total
    weight W.