ceph/src/boost/libs/rational/test/constexpr_test.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //  Copyright 2015 John Maddock. Distributed under the Boost
   3 //  Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/rational.hpp>
   7
   8
   9 int main()
  10 {
  11 #ifndef BOOST_NO_CXX11_CONSTEXPR
  12    constexpr boost::rational<int> i1;
  13    constexpr boost::rational<int> i2(3);
  14    constexpr boost::rational<long long> i3(i2);
  15    constexpr boost::rational<short> i4(i2);
  16    constexpr boost::rational<long long> i5(23u); // converting constructor
  17    // constexpr boost::rational<short> i6(23u); // Not supported, needs an explicit typecast in constructor.
  18
  19    static_assert(i1.numerator() == 0, "constexpr test");
  20    static_assert(i1.denominator() == 1, "constexpr test");
  21    static_assert(i2.numerator() == 3, "constexpr test");
  22    static_assert(i2.denominator() == 1, "constexpr test");
  23    static_assert(i3.numerator() == 3, "constexpr test");
  24    static_assert(i3.denominator() == 1, "constexpr test");
  25    static_assert(!i1, "constexpr test");
  26    static_assert(i2, "constexpr test");
  27 #endif
  28    return 0;
  29 }