58 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <iomanip>10 11// T5 setprecision(int n);12 13#include <iomanip>14#include <istream>15#include <ostream>16#include <cassert>17 18#include "test_macros.h"19 20template <class CharT>21struct testbuf22 : public std::basic_streambuf<CharT>23{24 testbuf() {}25};26 27int main(int, char**)28{29 {30 testbuf<char> sb;31 std::istream is(&sb);32 is >> std::setprecision(10);33 assert(is.precision() == 10);34 }35 {36 testbuf<char> sb;37 std::ostream os(&sb);38 os << std::setprecision(10);39 assert(os.precision() == 10);40 }41#ifndef TEST_HAS_NO_WIDE_CHARACTERS42 {43 testbuf<wchar_t> sb;44 std::wistream is(&sb);45 is >> std::setprecision(10);46 assert(is.precision() == 10);47 }48 {49 testbuf<wchar_t> sb;50 std::wostream os(&sb);51 os << std::setprecision(10);52 assert(os.precision() == 10);53 }54#endif55 56 return 0;57}58