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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 // <iomanip>
     11 
     12 // T5 setprecision(int n);
     13 
     14 #include <iomanip>
     15 #include <cassert>
     16 
     17 template <class CharT>
     18 struct testbuf
     19     : public std::basic_streambuf<CharT>
     20 {
     21     testbuf() {}
     22 };
     23 
     24 int main()
     25 {
     26     {
     27         testbuf<char> sb;
     28         std::istream is(&sb);
     29         is >> std::setprecision(10);
     30         assert(is.precision() == 10);
     31     }
     32     {
     33         testbuf<char> sb;
     34         std::ostream os(&sb);
     35         os << std::setprecision(10);
     36         assert(os.precision() == 10);
     37     }
     38     {
     39         testbuf<wchar_t> sb;
     40         std::wistream is(&sb);
     41         is >> std::setprecision(10);
     42         assert(is.precision() == 10);
     43     }
     44     {
     45         testbuf<wchar_t> sb;
     46         std::wostream os(&sb);
     47         os << std::setprecision(10);
     48         assert(os.precision() == 10);
     49     }
     50 }
     51