[libcxx] Add <experimental/chrono>
Summary: This patch adds <experimental/chrono> which only contains a single variable template. See: https://rawgit.com/cplusplus/fundamentals-ts/v1/fundamentals-ts.html#time Reviewers: jroelofs, danalbert, K-ballo, mclow.lists Reviewed By: mclow.lists Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D7352 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@227860 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -21,4 +21,8 @@
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#define _LIBCPP_END_NAMESPACE_LFTS } } }
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#define _VSTD_LFTS _VSTD_EXPERIMENTAL::fundamentals_v1
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#define _LIBCPP_BEGIN_NAMESPACE_CHRONO_LFTS _LIBCPP_BEGIN_NAMESPACE_STD \
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namespace chrono { namespace experimental { inline namespace fundamentals_v1 {
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#define _LIBCPP_END_NAMESPACE_CHRONO_LFTS _LIBCPP_END_NAMESPACE_STD } } }
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#endif
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55
include/experimental/chrono
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55
include/experimental/chrono
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@@ -0,0 +1,55 @@
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// -*- C++ -*-
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//===------------------------------ chrono ---------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_EXPERIMENTAL_CHRONO
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#define _LIBCPP_EXPERIMENTAL_CHRONO
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/**
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experimental/chrono synopsis
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// C++1y
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#include <chrono>
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namespace std {
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namespace chrono {
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namespace experimental {
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inline namespace fundamentals_v1 {
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// See C++14 20.12.4, customization traits
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template <class Rep> constexpr bool treat_as_floating_point_v
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= treat_as_floating_point<Rep>::value;
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} // namespace fundamentals_v1
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} // namespace experimental
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} // namespace chrono
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} // namespace std
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*/
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#include <experimental/__config>
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#include <chrono>
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#if _LIBCPP_STD_VER > 11
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_LIBCPP_BEGIN_NAMESPACE_CHRONO_LFTS
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#if __has_feature(cxx_variable_templates)
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template <class _Rep> _LIBCPP_CONSTEXPR bool treat_as_floating_point_v
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= treat_as_floating_point<_Rep>::value;
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#endif /* __has_feature(cxx_variable_templates) */
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_LIBCPP_END_NAMESPACE_CHRONO_LFTS
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#endif /* _LIBCPP_STD_VER > 11 */
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#endif /* _LIBCPP_EXPERIMENTAL_CHRONO */
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