| //===----------------------------------------------------------------------===// | 
 | // | 
 | //                     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. | 
 | // | 
 | //===----------------------------------------------------------------------===// | 
 |  | 
 | // <ios> | 
 |  | 
 | // class ios_base | 
 |  | 
 | // ios_base& scientific(ios_base& str); | 
 |  | 
 | #include <ios> | 
 | #include <streambuf> | 
 | #include <cassert> | 
 |  | 
 | struct testbuf : public std::streambuf {}; | 
 |  | 
 | int main() | 
 | { | 
 |     testbuf sb; | 
 |     std::ios ios(&sb); | 
 |     std::ios_base& r = std::scientific(ios); | 
 |     assert(&r == &ios); | 
 |     assert(ios.flags() & std::ios::scientific); | 
 | } |