Added boost header

test/external/boost/numeric/interval/io.hpp

@@ -0,0 +1,41 @@
+/* Boost interval/io.hpp header file
+ *
+ * This file is only meant to provide a quick
+ * implementation of the output operator. It is
+ * provided for test programs that aren't even
+ * interested in the precision of the results.
+ * A real progam should define its own operators
+ * and never include this header.
+ *
+ * Copyright 2003 Guillaume Melquiond
+ *
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or
+ * copy at http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_NUMERIC_INTERVAL_IO_HPP
+#define BOOST_NUMERIC_INTERVAL_IO_HPP
+
+#include <boost/numeric/interval/interval.hpp>
+#include <boost/numeric/interval/utility.hpp>
+#include <ostream>
+
+namespace boost {
+namespace numeric {
+
+template<class CharType, class CharTraits, class T, class Policies>
+std::basic_ostream<CharType, CharTraits> &operator<<
+  (std::basic_ostream<CharType, CharTraits> &stream,
+   interval<T, Policies> const &value)
+{
+  if (empty(value))
+    return stream << "[]";
+  else
+    return stream << '[' << lower(value) << ',' << upper(value) << ']';
+}
+
+} // namespace numeric
+} // namespace boost
+
+#endif // BOOST_NUMERIC_INTERVAL_IO_HPP