ceph/src/boost/libs/array/test/array_constexpr.cpp

   1 /* tests using constexpr on boost:array
   2  * (C) Copyright Marshall Clow 2012
   3  * Distributed under the Boost Software License, Version 1.0. (See
   4  * accompanying file LICENSE_1_0.txt or copy at
   5  * http://www.boost.org/LICENSE_1_0.txt)
   6  */
   7
   8 #include <string>
   9 #include <iostream>
  10 #include <boost/array.hpp>
  11 #include <algorithm>
  12 #ifndef BOOST_NO_CXX11_HDR_ARRAY
  13 #include <array>
  14 #endif
  15
  16 #define BOOST_TEST_MAIN
  17 #include <boost/test/unit_test.hpp>
  18
  19 #ifndef BOOST_NO_CXX11_CONSTEXPR
  20 constexpr boost::array<int, 10> arr  {{ 0,1,2,3,4,5,6,7,8,9 }};
  21 constexpr std::array<int, 10> arr_std {{ 0,1,2,3,4,5,6,7,8,9 }};
  22
  23 template <typename T>
  24 void sink ( T t ) {}
  25
  26 template <typename T, size_t N>
  27 void sink ( boost::array<T,N> &arr ) {}
  28
  29 BOOST_AUTO_TEST_CASE( test_main )
  30 {
  31 //    constexpr int two = arr_std.at (2);
  32     constexpr int three = arr.at (3);
  33     int whatever [ arr.at(4) ];
  34     (void)three;
  35     (void) whatever;
  36 }
  37
  38 #else   // no constexpr means no constexpr tests!
  39 BOOST_AUTO_TEST_CASE( test_main )
  40 {
  41 }
  42 #endif