1 // Copyright 2018-2019 Hans Dembinski 2 // 3 // Distributed under the Boost Software License, Version 1.0. 4 // (See accompanying file LICENSE_1_0.txt 5 // or copy at http://www.boost.org/LICENSE_1_0.txt) 6 7 #include <boost/core/lightweight_test.hpp> 8 #include <boost/histogram/axis/integer.hpp> 9 #include "throw_exception.hpp" 10 #include <boost/histogram/histogram.hpp> 11 #include <boost/histogram/make_histogram.hpp> 12 #include <boost/range/adaptor/filtered.hpp> 13 #include <boost/range/numeric.hpp> 14 15 using namespace boost::histogram; 16 using namespace boost::adaptors; 17 main()18int main() { 19 auto h = make_histogram(axis::integer<>(1, 4)); 20 h(1, weight(1)); 21 h(2, weight(2)); 22 h(3, weight(3)); 23 h(4, weight(4)); 24 25 auto s1 = boost::accumulate(h | filtered([](double x) { return x > 2; }), 0.0); 26 BOOST_TEST_EQ(s1, 7); 27 28 return boost::report_errors(); 29 } 30