text: 
  //===----------------------------------------------------------------------===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is dual licensed under the MIT and the University of Illinois Open
  // Source Licenses. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  //
  // <complex> feature macros
  
  /*  Constant                                    Value
      __cpp_lib_complex_udls                      201309L
  
  */
  
  #include <complex>
  #include <cassert>
  #include "test_macros.h"
  
  int main()
  {
  //  ensure that the macros that are supposed to be defined in <complex> are defined.
  
  /*
  #if !defined(__cpp_lib_fooby)
  # error "__cpp_lib_fooby is not defined"
  #elif __cpp_lib_fooby < 201606L
  # error "__cpp_lib_fooby has an invalid value"
  #endif
  */
  }
  