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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <functional>
     11 
     12 // unary_function
     13 
     14 #include <functional>
     15 #include <type_traits>
     16 
     17 int main()
     18 {
     19     typedef std::unary_function<int, bool> uf;
     20     static_assert((std::is_same<uf::argument_type, int>::value), "");
     21     static_assert((std::is_same<uf::result_type, bool>::value), "");
     22 }
     23