add boost on mac

macx64/include/boost/histogram/accumulators/ostream.hpp

@@ -0,0 +1,52 @@
+// Copyright 2015-2017 Hans Dembinski
+//
+// 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_HISTOGRAM_ACCUMULATORS_OSTREAM_HPP
+#define BOOST_HISTOGRAM_ACCUMULATORS_OSTREAM_HPP
+
+#include <boost/histogram/fwd.hpp>
+#include <iosfwd>
+
+#ifndef BOOST_HISTOGRAM_DOXYGEN_INVOKED
+
+namespace boost {
+namespace histogram {
+namespace accumulators {
+template <typename CharT, typename Traits, typename W>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const sum<W>& x) {
+  os << "sum(" << x.large() << " + " << x.small() << ")";
+  return os;
+}
+
+template <typename CharT, typename Traits, typename W>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const weighted_sum<W>& x) {
+  os << "weighted_sum(" << x.value() << ", " << x.variance() << ")";
+  return os;
+}
+
+template <typename CharT, typename Traits, typename W>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const mean<W>& x) {
+  os << "mean(" << x.count() << ", " << x.value() << ", " << x.variance() << ")";
+  return os;
+}
+
+template <typename CharT, typename Traits, typename W>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const weighted_mean<W>& x) {
+  os << "weighted_mean(" << x.sum_of_weights() << ", " << x.value() << ", "
+     << x.variance() << ")";
+  return os;
+}
+} // namespace accumulators
+} // namespace histogram
+} // namespace boost
+
+#endif // BOOST_HISTOGRAM_DOXYGEN_INVOKED
+
+#endif