From 28ea4871dc6607d755a67b5a24116de2d8d1c5d4 Mon Sep 17 00:00:00 2001
From: neingeist <neingeist@bl0rg.net>
Date: Fri, 14 Feb 2014 21:31:38 +0100
Subject: [PATCH] Assert that we have n>=2 samples

---
 av-variance.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/av-variance.c b/av-variance.c
index bc314aa..4c6cb50 100644
--- a/av-variance.c
+++ b/av-variance.c
@@ -27,6 +27,7 @@ double sample_variance(double set[], int set_n) {
   }
 
   // Divide by (n-1), as this is *sample* variance (Bessel's correction).
+  assert(set_n>1);
   ss /= (set_n-1);
 
   return ss;