From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 20:24:20 +0200
Subject: Adding upstream version 14.2.21.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../libs/accumulators/test/weighted_skewness.cpp   | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 src/boost/libs/accumulators/test/weighted_skewness.cpp

(limited to 'src/boost/libs/accumulators/test/weighted_skewness.cpp')

diff --git a/src/boost/libs/accumulators/test/weighted_skewness.cpp b/src/boost/libs/accumulators/test/weighted_skewness.cpp
new file mode 100644
index 00000000..b5ca1aab
--- /dev/null
+++ b/src/boost/libs/accumulators/test/weighted_skewness.cpp
@@ -0,0 +1,69 @@
+//  (C) Copyright 2006 Eric Niebler, Olivier Gygi.
+//  Use, modification and distribution are subject to 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)
+
+// Test case for weighted_skewness.hpp
+
+#include <boost/random.hpp>
+#include <boost/test/unit_test.hpp>
+#include <boost/test/floating_point_comparison.hpp>
+#include <boost/accumulators/numeric/functional/vector.hpp>
+#include <boost/accumulators/numeric/functional/complex.hpp>
+#include <boost/accumulators/numeric/functional/valarray.hpp>
+#include <boost/accumulators/accumulators.hpp>
+#include <boost/accumulators/statistics/stats.hpp>
+#include <boost/accumulators/statistics/weighted_skewness.hpp>
+
+using namespace boost;
+using namespace unit_test;
+using namespace boost::accumulators;
+
+///////////////////////////////////////////////////////////////////////////////
+// test_stat
+//
+void test_stat()
+{
+    // tolerance in %
+    // double epsilon = 1;
+
+    accumulator_set<double, stats<tag::weighted_skewness>, double > acc1;
+    accumulator_set<int, stats<tag::weighted_skewness>, int > acc2;
+
+    // two random number generators
+    boost::lagged_fibonacci607 rng;
+    boost::normal_distribution<> mean_sigma(0,1);
+    boost::variate_generator<boost::lagged_fibonacci607&, boost::normal_distribution<> > normal(rng, mean_sigma);
+
+    for (std::size_t i=0; i<100000; ++i)
+    {
+        acc1(normal(), weight = rng());
+    }
+
+    // This check fails because epsilon is relative and not absolute
+    // BOOST_CHECK_CLOSE( weighted_skewness(acc1), 0., epsilon );
+
+    acc2(2, weight = 4);
+    acc2(7, weight = 1);
+    acc2(4, weight = 3);
+    acc2(9, weight = 1);
+    acc2(3, weight = 2);
+
+    BOOST_CHECK_EQUAL( weighted_mean(acc2), 42./11. );
+    BOOST_CHECK_EQUAL( accumulators::weighted_moment<2>(acc2), 212./11. );
+    BOOST_CHECK_EQUAL( accumulators::weighted_moment<3>(acc2), 1350./11. );
+    BOOST_CHECK_CLOSE( weighted_skewness(acc2), 1.30708406282, 1e-6 );
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// init_unit_test_suite
+//
+test_suite* init_unit_test_suite( int argc, char* argv[] )
+{
+    test_suite *test = BOOST_TEST_SUITE("weighted_skewness test");
+
+    test->add(BOOST_TEST_CASE(&test_stat));
+
+    return test;
+}
+
-- 
cgit v1.2.3