From: trevor_hansen <trevor_hansen@e59a4935-1847-0410-ae03-e826735625c1>
Date: Sat, 7 May 2011 12:02:20 +0000 (+0000)
Subject: Signed division now returns what is should. Signed division is defined by unsigned... 
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=2cdca48ad034a018b75b0b3462bcd40a9935700c;p=francis%2Fstp.git

Signed division now returns what is should. Signed division is defined by unsigned division. Unsigned division returns 1, if the flag is set, now signed division returns 1  or -1 as appropriate.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1313 e59a4935-1847-0410-ae03-e826735625c1
---

diff --git a/src/simplifier/consteval.cpp b/src/simplifier/consteval.cpp
index 1bdafbb..e9acd55 100644
--- a/src/simplifier/consteval.cpp
+++ b/src/simplifier/consteval.cpp
@@ -307,7 +307,12 @@ namespace BEEV
         	  if (k==SBVREM)
         		  OutputNode = children[0];
         	  else
-        		  OutputNode = _bm->CreateOneConst(outputwidth);
+        		  {
+        	              if (CONSTANTBV::BitVector_bit_test(tmp0, inputwidth-1))
+        	                OutputNode = _bm->CreateMaxConst(inputwidth);
+        	              else
+        	                OutputNode = _bm->CreateOneConst(inputwidth);
+        		  }
 
         	  CONSTANTBV::BitVector_Destroy(remainder);
               CONSTANTBV::BitVector_Destroy(quotient);