Added thirdparty: boost library

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

@@ -0,0 +1,110 @@
+// 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/detail/counting_streambuf.hpp>
+#include <boost/histogram/fwd.hpp>
+#include <ios>
+
+/**
+  \file boost/histogram/accumulators/ostream.hpp
+  Simple streaming operators for the builtin accumulator types.
+
+  The text representation is not guaranteed to be stable between versions of
+  Boost.Histogram. This header is only included by
+  [boost/histogram/ostream.hpp](histogram/reference.html#header.boost.histogram.ostream_hpp).
+  To use your own, include your own implementation instead of this header and do not
+  include
+  [boost/histogram/ostream.hpp](histogram/reference.html#header.boost.histogram.ostream_hpp).
+ */
+
+#ifndef BOOST_HISTOGRAM_DOXYGEN_INVOKED
+
+namespace boost {
+namespace histogram {
+
+namespace detail {
+
+template <class CharT, class Traits, class T>
+std::basic_ostream<CharT, Traits>& handle_nonzero_width(
+    std::basic_ostream<CharT, Traits>& os, const T& x) {
+  const auto w = os.width();
+  os.width(0);
+  std::streamsize count = 0;
+  {
+    auto g = make_count_guard(os, count);
+    os << x;
+  }
+  if (os.flags() & std::ios::left) {
+    os << x;
+    for (auto i = count; i < w; ++i) os << os.fill();
+  } else {
+    for (auto i = count; i < w; ++i) os << os.fill();
+    os << x;
+  }
+  return os;
+}
+
+} // namespace detail
+
+namespace accumulators {
+
+template <class CharT, class Traits, class U, bool B>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const count<U, B>& x) {
+  return os << x.value();
+}
+
+template <class CharT, class Traits, class U>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const sum<U>& x) {
+  if (os.width() == 0)
+    return os << "sum(" << x.large_part() << " + " << x.small_part() << ")";
+  return detail::handle_nonzero_width(os, x);
+}
+
+template <class CharT, class Traits, class U>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const weighted_sum<U>& x) {
+  if (os.width() == 0)
+    return os << "weighted_sum(" << x.value() << ", " << x.variance() << ")";
+  return detail::handle_nonzero_width(os, x);
+}
+
+template <class CharT, class Traits, class U>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const mean<U>& x) {
+  if (os.width() == 0)
+    return os << "mean(" << x.count() << ", " << x.value() << ", " << x.variance() << ")";
+  return detail::handle_nonzero_width(os, x);
+}
+
+template <class CharT, class Traits, class U>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const weighted_mean<U>& x) {
+  if (os.width() == 0)
+    return os << "weighted_mean(" << x.sum_of_weights() << ", " << x.value() << ", "
+              << x.variance() << ")";
+  return detail::handle_nonzero_width(os, x);
+}
+
+template <class CharT, class Traits, class U>
+std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,
+                                              const fraction<U>& x) {
+  if (os.width() == 0)
+    return os << "fraction(" << x.successes() << ", " << x.failures() << ")";
+  return detail::handle_nonzero_width(os, x);
+}
+
+} // namespace accumulators
+} // namespace histogram
+} // namespace boost
+
+#endif // BOOST_HISTOGRAM_DOXYGEN_INVOKED
+
+#endif