From d5243c46266f92f8e5373c3f314aa2abc15c9db4 Mon Sep 17 00:00:00 2001 From: Mike Crowe Date: Mon, 5 Oct 2020 11:07:55 +0100 Subject: [PATCH] libstdc++: Test C++11 implementation of std::chrono::__detail::ceil Commit 53ad6b1979f4bd7121e977c4a44151b14d8a0147 split the implementation of std::chrono::__detail::ceil so that when compiling for C++17 and later std::chrono::ceil is used but when compiling for earlier versions a separate implementation is used to comply with C++11's limited constexpr rules. Let's run the equivalent of the existing std::chrono::ceil test cases on std::chrono::__detail::ceil too to make sure that it doesn't get broken. libstdc++-v3/ChangeLog: * testsuite/20_util/duration_cast/rounding_c++11.cc: Copy rounding.cc and alter to support compilation for C++11 and to test std::chrono::__detail::ceil. --- .../20_util/duration_cast/rounding_c++11.cc | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 libstdc++-v3/testsuite/20_util/duration_cast/rounding_c++11.cc diff --git a/libstdc++-v3/testsuite/20_util/duration_cast/rounding_c++11.cc b/libstdc++-v3/testsuite/20_util/duration_cast/rounding_c++11.cc new file mode 100644 index 00000000000..f10d27fd082 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/duration_cast/rounding_c++11.cc @@ -0,0 +1,43 @@ +// Copyright (C) 2016-2020 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// . + +// { dg-options "-std=gnu++11" } +// { dg-do compile { target c++11 } } + +#include + +using std::chrono::seconds; +using std::chrono::milliseconds; + +using fp_seconds = std::chrono::duration; + +static_assert( std::chrono::__detail::ceil(milliseconds(1000)) + == seconds(1) ); +static_assert( std::chrono::__detail::ceil(milliseconds(1001)) + == seconds(2) ); +static_assert( std::chrono::__detail::ceil(milliseconds(1500)) + == seconds(2) ); +static_assert( std::chrono::__detail::ceil(milliseconds(1999)) + == seconds(2) ); +static_assert( std::chrono::__detail::ceil(milliseconds(2000)) + == seconds(2) ); +static_assert( std::chrono::__detail::ceil(milliseconds(2001)) + == seconds(3) ); +static_assert( std::chrono::__detail::ceil(milliseconds(2500)) + == seconds(3) ); +static_assert( std::chrono::__detail::ceil(milliseconds(500)) + == fp_seconds{0.5f} ); -- 2.30.2