text: /*
   *  Copyright 2008-2018 NVIDIA Corporation
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  
  /*
   * (C) Copyright John Maddock 2000.
   * 
   * Distributed under the Boost Software License, Version 1.0.
   * (See accompanying NOTICE file for the complete license)
   *
   * For more information, see http://www.boost.org
   */
  
  #pragma once
  
  #include <thrust/detail/config.h>
  #include <thrust/detail/type_traits.h>
  #include <thrust/detail/preprocessor.h>
  
  THRUST_BEGIN_NS
  
  namespace detail
  {
  
  template <typename, bool x>
  struct depend_on_instantiation
  {
    THRUST_INLINE_INTEGRAL_MEMBER_CONSTANT bool value = x;
  };
  
  #if THRUST_CPP_DIALECT >= 2011
  
  #  if THRUST_CPP_DIALECT >= 2017
  #    define THRUST_STATIC_ASSERT(B)        static_assert(B)
  #  else
  #    define THRUST_STATIC_ASSERT(B)        static_assert(B, "static assertion failed")
  #  endif
  #  define THRUST_STATIC_ASSERT_MSG(B, msg) static_assert(B, msg)
  
  #else // Older than C++11.
  
  // HP aCC cannot deal with missing names for template value parameters.
  template <bool x> struct STATIC_ASSERTION_FAILURE;
  
  template <> struct STATIC_ASSERTION_FAILURE<true> {};
  
  // HP aCC cannot deal with missing names for template value parameters.
  template <int x> struct static_assert_test {};
  
  #if    (  (THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_GCC)                  \
         && (THRUST_GCC_VERSION >= 40800))                                      \
      || (THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_CLANG)
    // Clang and GCC 4.8+ will complain about this typedef being unused unless we
    // annotate it as such.
  #  define THRUST_STATIC_ASSERT(B)                                             \
      typedef ::thrust::detail::static_assert_test<                             \
        sizeof(::thrust::detail::STATIC_ASSERTION_FAILURE<(bool)(B)>)           \
      >                                                                         \
        THRUST_PP_CAT2(thrust_static_assert_typedef_, __LINE__)                 \
        __attribute__((unused))                                                 \
      /**/      
  #else
  #  define THRUST_STATIC_ASSERT(B)                                             \
      typedef ::thrust::detail::static_assert_test<                             \
        sizeof(::thrust::detail::STATIC_ASSERTION_FAILURE<(bool)(B)>)           \
      >                                                                         \
        THRUST_PP_CAT2(thrust_static_assert_typedef_, __LINE__)                 \
      /**/      
  #endif
  
  #define THRUST_STATIC_ASSERT_MSG(B, msg) THRUST_STATIC_ASSERT(B)
  
  #endif // THRUST_CPP_DIALECT >= 2011
  
  } // namespace detail
  
  THRUST_END_NS
  
  
  