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authorNilay Vaish <nilay@cs.wisc.edu>2011-06-14 19:51:44 -0500
committerNilay Vaish <nilay@cs.wisc.edu>2011-06-14 19:51:44 -0500
commit8bf92329eeea76e4e01c49f31e68c29cdada5985 (patch)
treeafc0e1b57893a14095adb44c86ed70d4b429e0ef
parent91622602c29f847d9844ec66a1db4ca3740901d3 (diff)
downloadgem5-8bf92329eeea76e4e01c49f31e68c29cdada5985.tar.xz
Ruby: Correct set LONG_BITS and INDEX_SHIFT in class Set.
The code for Set class was written under the assumption that std::numeric_limits<long>::digits returns the number of bits used for data type long, which was presumed to be either 32 or 64. But return value is actually one less, that is, it is either 31 or 63. The value is now being incremented by 1 so as to correctly set it.
-rw-r--r--src/mem/ruby/common/Set.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mem/ruby/common/Set.hh b/src/mem/ruby/common/Set.hh
index 5481c2ec7..b76c3409d 100644
--- a/src/mem/ruby/common/Set.hh
+++ b/src/mem/ruby/common/Set.hh
@@ -54,7 +54,7 @@ class Set
long *m_p_nArray; // an word array to hold the bits in the set
long m_p_nArray_Static[NUMBER_WORDS_PER_SET];
- static const int LONG_BITS = std::numeric_limits<long>::digits;
+ static const int LONG_BITS = std::numeric_limits<long>::digits + 1;
static const int INDEX_SHIFT = LONG_BITS == 64 ? 6 : 5;
static const int INDEX_MASK = (1 << INDEX_SHIFT) - 1;