From: Nathan Binkert <nate@binkert.org>
Date: Fri, 12 Mar 2010 23:11:09 +0000 (-0800)
Subject: bugfix: since pow() causes a bug don't use it
X-Git-Tag: stable_2012_02_02~1479
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fce7c820f4f1b7e81039acef0af73eba66a7d0d8;p=gem5.git

bugfix: since pow() causes a bug don't use it
It's a power of two anyway, so why use it in the first place.
---

diff --git a/src/mem/ruby/system/PseudoLRUPolicy.hh b/src/mem/ruby/system/PseudoLRUPolicy.hh
index fbbe5191a..0cdf8a118 100644
--- a/src/mem/ruby/system/PseudoLRUPolicy.hh
+++ b/src/mem/ruby/system/PseudoLRUPolicy.hh
@@ -2,8 +2,6 @@
 #ifndef PSEUDOLRUPOLICY_H
 #define PSEUDOLRUPOLICY_H
 
-#include <cmath>
-
 #include "mem/ruby/system/AbstractReplacementPolicy.hh"
 
 /**
@@ -57,7 +55,7 @@ PseudoLRUPolicy::PseudoLRUPolicy(Index num_sets, Index assoc)
     m_num_levels++;
   }
   assert(m_num_levels < sizeof(unsigned int)*4);
-  num_tree_nodes = ((int)pow(2, m_num_levels))-1;
+  num_tree_nodes = (1 << m_num_levels) - 1;
   m_trees = new uint64[m_num_sets];
   for(unsigned int i=0; i< m_num_sets; i++){
     m_trees[i] = 0;