update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / boost / libs / histogram / test / accumulators_sum_test.cpp

diff --git a/ceph/src/boost/libs/histogram/test/accumulators_sum_test.cpp b/ceph/src/boost/libs/histogram/test/accumulators_sum_test.cpp
new file mode 100644 (file)
index 0000000..31463e7
--- /dev/null
+++ b/ceph/src/boost/libs/histogram/test/accumulators_sum_test.cpp
@@ -0,0 +1,70 @@
+// Copyright 2015-2018 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)
+
+#include <boost/core/lightweight_test.hpp>
+#include <boost/histogram/accumulators/ostream.hpp>
+#include <boost/histogram/accumulators/sum.hpp>
+#include "throw_exception.hpp"
+#include "utility_str.hpp"
+
+using namespace boost::histogram;
+using namespace std::literals;
+
+int main() {
+  double bad_sum = 0;
+  bad_sum += 1;
+  bad_sum += 1e100;
+  bad_sum += 1;
+  bad_sum += -1e100;
+  BOOST_TEST_EQ(bad_sum, 0); // instead of 2
+
+  using s_t = accumulators::sum<double>;
+  s_t sum;
+  ++sum;
+  BOOST_TEST_EQ(sum, 1);
+  BOOST_TEST_EQ(sum.value(), 1);
+  BOOST_TEST_EQ(sum.large(), 1);
+  BOOST_TEST_EQ(sum.small(), 0);
+  BOOST_TEST_EQ(str(sum), "sum(1 + 0)"s);
+  BOOST_TEST_EQ(str(sum, 15, false), "     sum(1 + 0)"s);
+  BOOST_TEST_EQ(str(sum, 15, true), "sum(1 + 0)     "s);
+
+  sum += 1e100;
+  BOOST_TEST_EQ(sum, (s_t{1e100, 1}));
+  ++sum;
+  BOOST_TEST_EQ(sum, (s_t{1e100, 2}));
+  sum += -1e100;
+  BOOST_TEST_EQ(sum, (s_t{0, 2}));
+  BOOST_TEST_EQ(sum, 2); // correct answer
+  BOOST_TEST_EQ(sum.value(), 2);
+  BOOST_TEST_EQ(sum.large(), 0);
+  BOOST_TEST_EQ(sum.small(), 2);
+
+  sum = s_t{1e100, 1};
+  sum += s_t{1e100, 1};
+  BOOST_TEST_EQ(sum, (s_t{2e100, 2}));
+  sum = s_t{1e100, 1};
+  sum += s_t{1, 0};
+  BOOST_TEST_EQ(sum, (s_t{1e100, 2}));
+  sum = s_t{1, 0};
+  sum += s_t{1e100, 1};
+  BOOST_TEST_EQ(sum, (s_t{1e100, 2}));
+  sum = s_t{0, 1};
+  sum += s_t{1, 0};
+  BOOST_TEST_EQ(sum, (s_t{1, 1}));
+
+  accumulators::sum<double> a{3}, b{2}, c{3};
+  BOOST_TEST_LT(b, c);
+  BOOST_TEST_LE(b, c);
+  BOOST_TEST_LE(a, c);
+  BOOST_TEST_GT(a, b);
+  BOOST_TEST_GE(a, b);
+  BOOST_TEST_GE(a, c);
+
+  BOOST_TEST_EQ(s_t{} += s_t{}, s_t{});
+
+  return boost::report_errors();
+}