ceph/src/boost/libs/multiprecision/test/test_optional_compat.cpp

   1 /*
   2  *  (c) Copyright Andrey Semashev 2018.
   3  *
   4  *  Use, modification and distribution are subject to the
   5  *  Boost Software License, Version 1.0. (See accompanying file
   6  *  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7  */
   8 /*
   9  * The test verifies that Boost.Multiprecision does not cause conflict with Boost.Optional
  10  * because of its restricted conversion constructors and operators. See comments in:
  11  *
  12  * https://github.com/boostorg/integer/pull/11
  13  */
  14
  15 #include <boost/multiprecision/cpp_int.hpp>
  16 #include <boost/optional/optional.hpp>
  17 #include <boost/core/lightweight_test.hpp>
  18
  19 inline boost::optional<boost::multiprecision::int128_t> foo()
  20 {
  21    return boost::optional<boost::multiprecision::int128_t>(10);
  22 }
  23
  24 int main()
  25 {
  26    boost::optional<boost::multiprecision::int128_t> num = foo();
  27    BOOST_TEST(!!num);
  28    BOOST_TEST(*num == 10);
  29
  30    return boost::report_errors();
  31 }