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diff --git a/Hilbert/GetBits.hpp b/Hilbert/GetBits.hpp
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+/*
+ * Copyright (C) 2006-2007 Chris Hamilton <chamilton@cs.dal.ca>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _GETBITS_HPP_
+#define _GETBITS_HPP_
+
+
+#include <Hilbert/Common.hpp>
+#include <Hilbert/BigBitVec.hpp>
+
+
+namespace Hilbert
+{
+	template <class H,class I>
+	H_INLINE
+	void
+	getBits(
+		const H &h,	// bits to read
+		int n,			// number of bits
+		int i,			// bit index
+		I &w				// destination
+		)
+	{
+		// This is terribly inefficient.
+		int j;
+		for ( j = 0; j < n; j++ )
+			w.setBit(j,h.getBit(i+j));
+		return;
+	}
+
+	
+	// <CBigBitVec,CBigBitVec>
+	// #TODO
+
+	// <CBigBitVec,CFixBitVec>
+	template<>
+	H_INLINE
+	void
+	getBits(
+		const CBigBitVec &h,
+		int n,
+		int i,
+		CFixBitVec &w
+		)
+	{
+		int ir, ib, t;
+		BBV_MODSPLIT(ir,ib,i);
+		w.rack() = h.racks()[ir] >> ib;
+		t = FBV_BITS - ib;
+		if ( t < n )
+		{
+			w.rack() |= h.racks()[ir+1] >> (FBV_BITS-n);
+		}
+		w.truncate(n);
+		return;
+	}
+	
+	
+	// <CFixBitVec,CFixBitVec>
+	template<>
+	H_INLINE
+	void
+	getBits(
+		const CFixBitVec &h,
+		int n,
+		int i,
+		CFixBitVec &w
+		)
+	{
+		w = h >> i;
+		w.truncate(n);
+		return;
+	}
+
+};
+
+
+#endif