From e92c4638edbacf544a2985c411e4d7fa68d7de5a Mon Sep 17 00:00:00 2001
From: Cary R <cygcary@yahoo.com>
Date: Tue, 13 Oct 2009 16:38:53 -0700
Subject: [PATCH] $clog2() should return an integer value.

The constant $clog2() was returning a value that had an integer
width, but it did not have the sign bit set. This could result
in incorrect math expressions. This patch sets the sign bit for
the constant $clog2() result.
(cherry picked from commit bc60536eb970237f61e6e377daa42456d222b409)
---
 eval_tree.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eval_tree.cc b/eval_tree.cc
index deb313f34..3f278f842 100644
--- a/eval_tree.cc
+++ b/eval_tree.cc
@@ -1703,6 +1703,7 @@ NetExpr* evaluate_clog2(NetExpr*&arg_)
 		  res = integer_width;
 
 	    verinum tmp (res, integer_width);
+	    tmp.has_sign(true);
 	    NetEConst*rtn = new NetEConst(tmp);
 	    return rtn;
       }