text: // Copyright (c) 1997  ETH Zurich (Switzerland).
  // All rights reserved.
  //
  // This file is part of CGAL (www.cgal.org).
  // You can redistribute it and/or modify it under the terms of the GNU
  // General Public License as published by the Free Software Foundation,
  // either version 3 of the License, or (at your option) any later version.
  //
  // Licensees holding a valid commercial license may use this file in
  // accordance with the commercial license agreement provided with the software.
  //
  // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  //
  // $URL$
  // $Id$
  // SPDX-License-Identifier: GPL-3.0+
  // 
  //
  // Author(s)     : Geert-Jan Giezeman, Sven Schoenherr, Gabriele Neyer
  //
  // Generated from script create_assertions.sh
  
  
  // Note that this header file is intentionnaly not protected with a
  // macro (as <cassert>). Calling it a second time with another value
  // for NDEBUG for example must make a difference.
  
  #include <CGAL/assertions.h>
  
  // macro definitions
  // =================
  // assertions
  // ----------
  
  #undef CGAL_Tree_assertion
  #undef CGAL_Tree_assertion_msg
  #undef CGAL_Tree_assertion_code
  
  #if defined(CGAL_TREE_NO_ASSERTIONS) || defined(CGAL_NO_ASSERTIONS) \
    || defined(NDEBUG)
  #  define CGAL_Tree_assertion(EX) (static_cast<void>(0))
  
  #include <CGAL/license/SearchStructures.h>
  
  #  define CGAL_Tree_assertion_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_assertion_code(CODE)
  #else
  #  define CGAL_Tree_assertion(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_assertion_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_assertion_code(CODE) CODE
  #  define CGAL_Tree_assertions 1
  #endif // CGAL_TREE_NO_ASSERTIONS
  
  
  #undef CGAL_Tree_exactness_assertion
  #undef CGAL_Tree_exactness_assertion_msg
  #undef CGAL_Tree_exactness_assertion_code
  
  #if defined(CGAL_TREE_NO_ASSERTIONS) || defined(CGAL_NO_ASSERTIONS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || defined(NDEBUG)
  #  define CGAL_Tree_exactness_assertion(EX) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_assertion_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_assertion_code(CODE)
  #else
  #  define CGAL_Tree_exactness_assertion(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_exactness_assertion_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_exactness_assertion_code(CODE) CODE
  #  define CGAL_Tree_exactness_assertions 1
  #endif // CGAL_TREE_NO_ASSERTIONS
  
  
  #undef CGAL_Tree_expensive_assertion
  #undef CGAL_Tree_expensive_assertion_msg
  #undef CGAL_Tree_expensive_assertion_code
  
  #if defined(CGAL_TREE_NO_ASSERTIONS) \
    || defined(CGAL_NO_ASSERTIONS) \
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_assertion(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_assertion_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_assertion_code(CODE)
  #else
  #  define CGAL_Tree_expensive_assertion(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_assertion_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_assertion_code(CODE) CODE
  #  define CGAL_Tree_expensive_assertions 1
  #endif // CGAL_TREE_NO_ASSERTIONS
  
  
  #undef CGAL_Tree_expensive_exactness_assertion
  #undef CGAL_Tree_expensive_exactness_assertion_msg
  #undef CGAL_Tree_expensive_exactness_assertion_code
  
  #if defined(CGAL_TREE_NO_ASSERTIONS) || defined(CGAL_NO_ASSERTIONS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_exactness_assertion(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_assertion_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_assertion_code(CODE)
  #else
  #  define CGAL_Tree_expensive_exactness_assertion(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_exactness_assertion_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_exactness_assertion_code(CODE) CODE
  #  define CGAL_Tree_expensive_exactness_assertions 1
  #endif // CGAL_TREE_NO_ASSERTIONS
  
  
  // preconditions
  // -------------
  
  #undef CGAL_Tree_precondition
  #undef CGAL_Tree_precondition_msg
  #undef CGAL_Tree_precondition_code
  
  #if defined(CGAL_TREE_NO_PRECONDITIONS) || defined(CGAL_NO_PRECONDITIONS) \
    || defined(NDEBUG)
  #  define CGAL_Tree_precondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_precondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_precondition_code(CODE)
  #else
  #  define CGAL_Tree_precondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_precondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_precondition_code(CODE) CODE
  #  define CGAL_Tree_preconditions 1
  #endif // CGAL_TREE_NO_PRECONDITIONS
  
  
  #undef CGAL_Tree_exactness_precondition
  #undef CGAL_Tree_exactness_precondition_msg
  #undef CGAL_Tree_exactness_precondition_code
  
  #if defined(CGAL_TREE_NO_PRECONDITIONS) || defined(CGAL_NO_PRECONDITIONS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || defined(NDEBUG)
  #  define CGAL_Tree_exactness_precondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_precondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_precondition_code(CODE)
  #else
  #  define CGAL_Tree_exactness_precondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_exactness_precondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_exactness_precondition_code(CODE) CODE
  #  define CGAL_Tree_exactness_preconditions 1
  #endif // CGAL_TREE_NO_PRECONDITIONS
  
  
  #undef CGAL_Tree_expensive_precondition
  #undef CGAL_Tree_expensive_precondition_msg
  #undef CGAL_Tree_expensive_precondition_code
  
  #if defined(CGAL_TREE_NO_PRECONDITIONS) || defined(CGAL_NO_PRECONDITIONS) \
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_precondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_precondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_precondition_code(CODE)
  #else
  #  define CGAL_Tree_expensive_precondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_precondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_precondition_code(CODE) CODE
  #  define CGAL_Tree_expensive_preconditions 1
  #endif // CGAL_TREE_NO_PRECONDITIONS
  
  
  #undef CGAL_Tree_expensive_exactness_precondition
  #undef CGAL_Tree_expensive_exactness_precondition_msg
  #undef CGAL_Tree_expensive_exactness_precondition_code
  
  #if defined(CGAL_TREE_NO_PRECONDITIONS) || defined(CGAL_NO_PRECONDITIONS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_exactness_precondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_precondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_precondition_code(CODE)
  #else
  #  define CGAL_Tree_expensive_exactness_precondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_exactness_precondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::precondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_exactness_precondition_code(CODE) CODE
  #  define CGAL_Tree_expensive_exactness_preconditions 1
  #endif // CGAL_TREE_NO_PRECONDITIONS
  
  
  // postconditions
  // --------------
  
  #undef CGAL_Tree_postcondition
  #undef CGAL_Tree_postcondition_msg
  #undef CGAL_Tree_postcondition_code
  
  #if defined(CGAL_TREE_NO_POSTCONDITIONS) || defined(CGAL_NO_POSTCONDITIONS) \
    || defined(NDEBUG)
  #  define CGAL_Tree_postcondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_postcondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_postcondition_code(CODE)
  #else
  #  define CGAL_Tree_postcondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_postcondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_postcondition_code(CODE) CODE
  #  define CGAL_Tree_postconditions 1
  #endif // CGAL_TREE_NO_POSTCONDITIONS
  
  
  #undef CGAL_Tree_exactness_postcondition
  #undef CGAL_Tree_exactness_postcondition_msg
  #undef CGAL_Tree_exactness_postcondition_code
  
  #if defined(CGAL_TREE_NO_POSTCONDITIONS) || defined(CGAL_NO_POSTCONDITIONS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || defined(NDEBUG)
  #  define CGAL_Tree_exactness_postcondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_postcondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_postcondition_code(CODE)
  #else
  #  define CGAL_Tree_exactness_postcondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_exactness_postcondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_exactness_postcondition_code(CODE) CODE
  #  define CGAL_Tree_exactness_postconditions 1
  #endif // CGAL_TREE_NO_POSTCONDITIONS
  
  
  #undef CGAL_Tree_expensive_postcondition
  #undef CGAL_Tree_expensive_postcondition_msg
  #undef CGAL_Tree_expensive_postcondition_code
  
  #if defined(CGAL_TREE_NO_POSTCONDITIONS) || defined(CGAL_NO_POSTCONDITIONS) \
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_postcondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_postcondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_postcondition_code(CODE)
  #else
  #  define CGAL_Tree_expensive_postcondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_postcondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_postcondition_code(CODE) CODE
  #  define CGAL_Tree_expensive_postconditions 1
  #endif // CGAL_TREE_NO_POSTCONDITIONS
  
  
  #undef CGAL_Tree_expensive_exactness_postcondition
  #undef CGAL_Tree_expensive_exactness_postcondition_msg
  #undef CGAL_Tree_expensive_exactness_postcondition_code
  
  #if defined(CGAL_TREE_NO_POSTCONDITIONS) || defined(CGAL_NO_POSTCONDITIONS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_exactness_postcondition(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_postcondition_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_postcondition_code(CODE)
  #else
  #  define CGAL_Tree_expensive_exactness_postcondition(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_exactness_postcondition_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::postcondition_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_exactness_postcondition_code(CODE) CODE
  #  define CGAL_Tree_expensive_exactness_postconditions 1
  #endif // CGAL_TREE_NO_POSTCONDITIONS
  
  
  // warnings
  // --------
  
  #undef CGAL_Tree_warning
  #undef CGAL_Tree_warning_msg
  #undef CGAL_Tree_warning_code
  
  #if defined(CGAL_TREE_NO_WARNINGS) || defined(CGAL_NO_WARNINGS) \
    || defined(NDEBUG)
  #  define CGAL_Tree_warning(EX) (static_cast<void>(0))
  #  define CGAL_Tree_warning_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_warning_code(CODE)
  #else
  #  define CGAL_Tree_warning(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_warning_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_warning_code(CODE) CODE
  #  define CGAL_Tree_warnings 1
  #endif // CGAL_TREE_NO_WARNINGS
  
  
  #undef CGAL_Tree_exactness_warning
  #undef CGAL_Tree_exactness_warning_msg
  #undef CGAL_Tree_exactness_warning_code
  
  #if defined(CGAL_TREE_NO_WARNINGS) || defined(CGAL_NO_WARNINGS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || defined(NDEBUG)
  #  define CGAL_Tree_exactness_warning(EX) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_warning_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_exactness_warning_code(CODE)
  #else
  #  define CGAL_Tree_exactness_warning(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_exactness_warning_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_exactness_warning_code(CODE) CODE
  #  define CGAL_Tree_exactness_warnings 1
  #endif // CGAL_TREE_NO_WARNINGS
  
  
  #undef CGAL_Tree_expensive_warning
  #undef CGAL_Tree_expensive_warning_msg
  #undef CGAL_Tree_expensive_warning_code
  
  #if defined(CGAL_TREE_NO_WARNINGS) || defined(CGAL_NO_WARNINGS) \
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_warning(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_warning_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_warning_code(CODE)
  #else
  #  define CGAL_Tree_expensive_warning(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_warning_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_warning_code(CODE) CODE
  #  define CGAL_Tree_expensive_warnings 1
  #endif // CGAL_TREE_NO_WARNINGS
  
  
  #undef CGAL_Tree_expensive_exactness_warning
  #undef CGAL_Tree_expensive_exactness_warning_msg
  #undef CGAL_Tree_expensive_exactness_warning_code
  
  #if defined(CGAL_TREE_NO_WARNINGS) || defined(CGAL_NO_WARNINGS) \
    || (!defined(CGAL_TREE_CHECK_EXACTNESS) && !defined(CGAL_CHECK_EXACTNESS))\
    || (!defined(CGAL_TREE_CHECK_EXPENSIVE) && !defined(CGAL_CHECK_EXPENSIVE)) \
    || defined(NDEBUG)
  #  define CGAL_Tree_expensive_exactness_warning(EX) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_warning_msg(EX,MSG) (static_cast<void>(0))
  #  define CGAL_Tree_expensive_exactness_warning_code(CODE)
  #else
  #  define CGAL_Tree_expensive_exactness_warning(EX) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__))
  #  define CGAL_Tree_expensive_exactness_warning_msg(EX,MSG) \
     (CGAL::possibly(EX)?(static_cast<void>(0)): ::CGAL::warning_fail( # EX , __FILE__, __LINE__, MSG))
  #  define CGAL_Tree_expensive_exactness_warning_code(CODE) CODE
  #  define CGAL_Tree_expensive_exactness_warnings 1
  #endif // CGAL_TREE_NO_WARNINGS
  