--- boost_1_44_0/boost/dynamic_bitset/dynamic_bitset.hpp	2011-08-22 13:37:32.928051000 -0700
+++ /home/kingsley/Lnk/f7opt/mydynamic_bitset.hpp	2011-11-22 11:07:51.912857000 -0800
@@ -270,6 +270,7 @@
     dynamic_bitset& flip(size_type n);
     dynamic_bitset& flip();
     bool test(size_type n) const;
+    bool test_set(size_type n);
     bool any() const;
     bool none() const;
     dynamic_bitset operator~() const;
@@ -414,6 +415,7 @@
 BOOST_DYNAMIC_BITSET_PRIVATE:
 
     bool m_unchecked_test(size_type pos) const;
+    bool m_unchecked_test_set(size_type pos);
     static size_type calc_num_blocks(size_type num_bits);
 
     Block&        m_highest_block();
@@ -967,6 +969,23 @@
 }
 
 template <typename Block, typename Allocator>
+bool dynamic_bitset<Block, Allocator>::m_unchecked_test_set(size_type pos)
+{
+    Block& mem=m_bits[block_index(pos)];
+    Block msk=bit_mask(pos);
+    Block res=mem;
+    mem |= msk;
+    return (bool)(res & msk);
+}
+
+template <typename Block, typename Allocator>
+bool dynamic_bitset<Block, Allocator>::test_set(size_type pos)
+{
+    assert(pos < m_num_bits);
+    return m_unchecked_test_set(pos);
+}
+
+template <typename Block, typename Allocator>
 bool dynamic_bitset<Block, Allocator>::any() const
 {
     for (size_type i = 0; i < num_blocks(); ++i)