From d5ce4687939d0bbc85a8dbaab51aab9b62b08d0e Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Thu, 18 Dec 2014 17:26:42 +0100
Subject: const correctness

---
 opentrack/simple-mat.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/opentrack/simple-mat.hpp b/opentrack/simple-mat.hpp
index 447327a8..f1391f3c 100644
--- a/opentrack/simple-mat.hpp
+++ b/opentrack/simple-mat.hpp
@@ -65,7 +65,7 @@ struct Mat
         return ret;
     }
 
-    Mat<num, w, h> t()
+    Mat<num, w, h> t() const
     {
         Mat<num, w, h> ret;
 
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