X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fmoments.c;h=40180f7b7ecdb461c46eaa31b42c1927835c7b66;hb=fb224459eed00514cbc36ecbc311c644f8b22def;hp=e289e8aec0ef27c2372e2c007eeb30e6b2f6d469;hpb=fe8dc2171009e90d2335f159d05f7e6660e24780;p=pspp

diff --git a/src/math/moments.c b/src/math/moments.c
index e289e8aec0..40180f7b7e 100644
--- a/src/math/moments.c
+++ b/src/math/moments.c
@@ -225,12 +225,8 @@ moments_calculate (const struct moments *m,
     }
   else
     {
-      /* After the second pass we can calculate any stat.  We
-         don't support "online" computation during the second
-         pass, so As a simple self-check, the total weight for
-         the passes must agree. */
+      /* After the second pass we can calculate any stat.  */
       assert (m->pass == 2);
-      assert (m->w1 == m->w2);
 
       if (m->w2 > 0.)
         {
@@ -461,6 +457,13 @@ moments1_destroy (struct moments1 *m)
   free (m);
 }
 
+
+double
+calc_semean (double var, double W)
+{
+  return sqrt (var / W);
+}
+
 /* Returns the standard error of the skewness for the given total
    weight W.