projects / ceph.git / blame
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|---|---|---|
| f67539c2 TL |
1 | // Copyright 2015-2018 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/accumulators/ostream.hpp> | |
| 9 | #include <boost/histogram/accumulators/sum.hpp> | |
| 10 | #include "throw_exception.hpp" | |
| 11 | #include "utility_str.hpp" | |
| 12 | ||
| 13 | using namespace boost::histogram; | |
| 14 | using namespace std::literals; | |
| 15 | ||
| 16 | int main() { | |
| 17 | double bad_sum = 0; | |
| 18 | bad_sum += 1; | |
| 19 | bad_sum += 1e100; | |
| 20 | bad_sum += 1; | |
| 21 | bad_sum += -1e100; | |
| 22 | BOOST_TEST_EQ(bad_sum, 0); // instead of 2 | |
| 23 | ||
| 24 | using s_t = accumulators::sum<double>; | |
| 25 | s_t sum; | |
| 26 | ++sum; | |
| 27 | BOOST_TEST_EQ(sum, 1); | |
| 28 | BOOST_TEST_EQ(sum.value(), 1); | |
| 1e59de90 TL |
29 | BOOST_TEST_EQ(sum.large_part(), 1); |
| 30 | BOOST_TEST_EQ(sum.small_part(), 0); | |
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31 | BOOST_TEST_EQ(str(sum), "sum(1 + 0)"s); |
| 32 | BOOST_TEST_EQ(str(sum, 15, false), " sum(1 + 0)"s); | |
| 33 | BOOST_TEST_EQ(str(sum, 15, true), "sum(1 + 0) "s); | |
| 34 | ||
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35 | #include <boost/histogram/detail/ignore_deprecation_warning_begin.hpp> |
| 36 | ||
| 37 | BOOST_TEST_EQ(sum.large(), 1); | |
| 38 | BOOST_TEST_EQ(sum.small(), 0); | |
| 39 | ||
| 40 | #include <boost/histogram/detail/ignore_deprecation_warning_end.hpp> | |
| 41 | ||
| f67539c2 TL |
42 | sum += 1e100; |
| 43 | BOOST_TEST_EQ(sum, (s_t{1e100, 1})); | |
| 44 | ++sum; | |
| 45 | BOOST_TEST_EQ(sum, (s_t{1e100, 2})); | |
| 46 | sum += -1e100; | |
| 47 | BOOST_TEST_EQ(sum, (s_t{0, 2})); | |
| 48 | BOOST_TEST_EQ(sum, 2); // correct answer | |
| 49 | BOOST_TEST_EQ(sum.value(), 2); | |
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50 | BOOST_TEST_EQ(sum.large_part(), 0); |
| 51 | BOOST_TEST_EQ(sum.small_part(), 2); | |
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52 | |
| 53 | sum = s_t{1e100, 1}; | |
| 54 | sum += s_t{1e100, 1}; | |
| 55 | BOOST_TEST_EQ(sum, (s_t{2e100, 2})); | |
| 56 | sum = s_t{1e100, 1}; | |
| 57 | sum += s_t{1, 0}; | |
| 58 | BOOST_TEST_EQ(sum, (s_t{1e100, 2})); | |
| 59 | sum = s_t{1, 0}; | |
| 60 | sum += s_t{1e100, 1}; | |
| 61 | BOOST_TEST_EQ(sum, (s_t{1e100, 2})); | |
| 62 | sum = s_t{0, 1}; | |
| 63 | sum += s_t{1, 0}; | |
| 64 | BOOST_TEST_EQ(sum, (s_t{1, 1})); | |
| 65 | ||
| 66 | accumulators::sum<double> a{3}, b{2}, c{3}; | |
| 67 | BOOST_TEST_LT(b, c); | |
| 68 | BOOST_TEST_LE(b, c); | |
| 69 | BOOST_TEST_LE(a, c); | |
| 70 | BOOST_TEST_GT(a, b); | |
| 71 | BOOST_TEST_GE(a, b); | |
| 72 | BOOST_TEST_GE(a, c); | |
| 73 | ||
| 74 | BOOST_TEST_EQ(s_t{} += s_t{}, s_t{}); | |
| 75 | ||
| 76 | return boost::report_errors(); | |
| 77 | } |