libs/type_traits/test/is_floating_point_test.cpp

   1
   2 //  (C) Copyright John Maddock 2005.
   3 //  Use, modification and distribution are subject to the
   4 //  Boost Software License, Version 1.0. (See accompanying file
   5 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include "test.hpp"
   8 #include "check_integral_constant.hpp"
   9 #ifdef TEST_STD
  10 #  include <type_traits>
  11 #else
  12 #  include <boost/type_traits/is_floating_point.hpp>
  13 #endif
  14
  15 TT_TEST_BEGIN(is_floating_point)
  16
  17 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float>::value, true);
  18 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float const>::value, true);
  19 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float volatile>::value, true);
  20 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float const volatile>::value, true);
  21
  22 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<double>::value, true);
  23 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<double const>::value, true);
  24 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<double volatile>::value, true);
  25 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<double const volatile>::value, true);
  26
  27 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<long double>::value, true);
  28 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<long double const>::value, true);
  29 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<long double volatile>::value, true);
  30 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<long double const volatile>::value, true);
  31
  32 //
  33 // cases that should not be true:
  34 //
  35 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<void>::value, false);
  36 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<int>::value, false);
  37 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<UDT>::value, false);
  38 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<test_abc1>::value, false);
  39 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<empty_UDT>::value, false);
  40 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float*>::value, false);
  41 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float&>::value, false);
  42 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
  43 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float&&>::value, false);
  44 #endif
  45 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<const float&>::value, false);
  46 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<float[2]>::value, false);
  47
  48 //
  49 // tricky cases:
  50 //
  51 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<test_abc1>::value, false);
  52 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<foo0_t>::value, false);
  53 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<foo1_t>::value, false);
  54 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<foo2_t>::value, false);
  55 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<foo3_t>::value, false);
  56 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<foo4_t>::value, false);
  57 BOOST_CHECK_INTEGRAL_CONSTANT(::tt::is_floating_point<incomplete_type>::value, false);
  58
  59 TT_TEST_END
  60
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