From cf1798b576b99745c7f95137e8d4d1465df18be9 Mon Sep 17 00:00:00 2001
From: tmeissner <programming@goodcleanfun.de>
Date: Mon, 18 Jan 2016 23:37:08 +0100
Subject: [PATCH] Guard test for value with to_ux01() function

---
 common/UtilsP.vhd | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/common/UtilsP.vhd b/common/UtilsP.vhd
index 2ef5334..b4c14a9 100644
--- a/common/UtilsP.vhd
+++ b/common/UtilsP.vhd
@@ -102,7 +102,9 @@ package body UtilsP is
     variable v_return : natural := 0;
   begin
     for i in data'range loop
-      v_return := v_return + 1;
+      if (to_ux01(data(i)) = '1') then
+        v_return := v_return + 1;
+      end if;
     end loop;
     return v_return;
   end function count_ones;
@@ -117,7 +119,7 @@ package body UtilsP is
   function is_unknown (data : in std_logic_vector) return boolean is
   begin
     for i in data'range loop
-      if (data(i) = 'U') then
+      if (to_ux01(data(i)) = 'U') then
         return true;
       end if;
     end loop;