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diff --git a/utils/fast_lexical_cast.hpp b/utils/fast_lexical_cast.hpp
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+#ifndef FAST_LEXICAL_CAST_HPP
+#define FAST_LEXICAL_CAST_HPP
+
+#define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+// This should make casting to/from string reasonably fast (see http://accu.org/index.php/journals/1375)
+
+#include <boost/lexical_cast.hpp>
+
+using boost::lexical_cast;
+
+#endif