Implement more Library Fundamentals v1 variable templates.

2014-10-21  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Implement more Library Fundamentals v1 variable templates.
	* include/Makefile.am: Add ratio, chrono and system_error.
	* include/Makefile.in: Regenerate.
	* include/experimental/chrono: New.
	* include/experimental/ratio: Likewise.
	* include/experimental/system_error: Likewise.
	* include/experimental/tuple (tuple_size_v): Likewise.
	* testsuite/experimental/chrono/value.cc: Likewise.
	* testsuite/experimental/ratio/value.cc: Likewise.
	* testsuite/experimental/system_error/value.cc: Likewise.
	* testsuite/experimental/tuple/tuple_size.cc: Likewise.

From-SVN: r216513

11 files changed, 384 insertions, 0 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index cedde0f..34b7e15 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,17 @@
+2014-10-21  Ville Voutilainen  <ville.voutilainen@gmail.com>
+
+	Implement more Library Fundamentals v1 variable templates.
+	* include/Makefile.am: Add ratio, chrono and system_error.
+	* include/Makefile.in: Regenerate.
+	* include/experimental/chrono: New.
+	* include/experimental/ratio: Likewise.
+	* include/experimental/system_error: Likewise.
+	* include/experimental/tuple (tuple_size_v): Likewise.
+	* testsuite/experimental/chrono/value.cc: Likewise.
+	* testsuite/experimental/ratio/value.cc: Likewise.
+	* testsuite/experimental/system_error/value.cc: Likewise.
+	* testsuite/experimental/tuple/tuple_size.cc: Likewise.
+
 2014-10-20  Jonathan Wakely  <jwakely@redhat.com>
 
 	* src/c++98/Makefile.am: Move ctype.cc, ctype_configure_char.cc and
diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 1ee8ddc..89fa436 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -640,8 +640,11 @@ experimental_srcdir = ${glibcxx_srcdir}/include/experimental
 experimental_builddir = ./experimental
 experimental_headers = \
 	${experimental_srcdir}/any \
+	${experimental_srcdir}/chrono \
 	${experimental_srcdir}/optional \
+	${experimental_srcdir}/ratio \
 	${experimental_srcdir}/string_view \
+	${experimental_srcdir}/system_error \
 	${experimental_srcdir}/string_view.tcc \
 	${experimental_srcdir}/tuple \
 	${experimental_srcdir}/type_traits
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index a2262e8..bf10d6f 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -906,8 +906,11 @@ experimental_srcdir = ${glibcxx_srcdir}/include/experimental
 experimental_builddir = ./experimental
 experimental_headers = \
 	${experimental_srcdir}/any \
+	${experimental_srcdir}/chrono \
 	${experimental_srcdir}/optional \
+	${experimental_srcdir}/ratio \
 	${experimental_srcdir}/string_view \
+	${experimental_srcdir}/system_error \
 	${experimental_srcdir}/string_view.tcc \
 	${experimental_srcdir}/tuple \
 	${experimental_srcdir}/type_traits
diff --git a/libstdc++-v3/include/experimental/chrono b/libstdc++-v3/include/experimental/chrono
new file mode 100644
index 0000000..4754ea0
--- /dev/null
+++ b/libstdc++-v3/include/experimental/chrono
@@ -0,0 +1,65 @@
+// Variable Templates For chrono -*- C++ -*-
+
+// Copyright (C) 2014 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file experimental/chrono
+ *  This is a TS C++ Library header.
+ */
+
+//
+// N3932 Variable Templates For Type Traits (Revision 1)
+//
+
+#ifndef _GLIBCXX_EXPERIMENTAL_CHRONO
+#define _GLIBCXX_EXPERIMENTAL_CHRONO 1
+
+#pragma GCC system_header
+
+#if __cplusplus <= 201103L
+# include <bits/c++14_warning.h>
+#else
+
+#include <chrono>
+
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+namespace chrono {
+namespace experimental
+{
+inline namespace fundamentals_v1
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+// See C++14 §20.12.4, customization traits
+template <typename _Rep>
+   constexpr bool treat_as_floating_point_v =
+     treat_as_floating_point<_Rep>::value;
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace fundamentals_v1
+} // namespace experimental
+} // namespace chrono
+} // namespace std
+
+#endif // __cplusplus <= 201103L
+
+#endif // _GLIBCXX_EXPERIMENTAL_CHRONO
diff --git a/libstdc++-v3/include/experimental/ratio b/libstdc++-v3/include/experimental/ratio
new file mode 100644
index 0000000..1f2080b
--- /dev/null
+++ b/libstdc++-v3/include/experimental/ratio
@@ -0,0 +1,73 @@
+// Variable Templates For ratio -*- C++ -*-
+
+// Copyright (C) 2014 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file experimental/ratio
+ *  This is a TS C++ Library header.
+ */
+
+//
+// N3932 Variable Templates For Type Traits (Revision 1)
+//
+
+#ifndef _GLIBCXX_EXPERIMENTAL_RATIO
+#define _GLIBCXX_EXPERIMENTAL_RATIO 1
+
+#pragma GCC system_header
+
+#if __cplusplus <= 201103L
+# include <bits/c++14_warning.h>
+#else
+
+#include <ratio>
+
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+namespace experimental
+{
+inline namespace fundamentals_v1
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+// See C++14 §20.11.5, ratio comparison
+template <typename _R1, typename _R2>
+  constexpr bool ratio_equal_v = ratio_equal<_R1, _R2>::value;
+template <typename _R1, typename _R2>
+  constexpr bool ratio_not_equal_v = ratio_not_equal<_R1, _R2>::value;
+template <typename _R1, typename _R2>
+  constexpr bool ratio_less_v = ratio_less<_R1, _R2>::value;
+template <typename _R1, typename _R2>
+  constexpr bool ratio_less_equal_v = ratio_less_equal<_R1, _R2>::value;
+template <typename _R1, typename _R2>
+  constexpr bool ratio_greater_v = ratio_greater<_R1, _R2>::value;
+template <typename _R1, typename _R2>
+  constexpr bool ratio_greater_equal_v = ratio_greater_equal<_R1, _R2>::value;
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace fundamentals_v1
+} // namespace experimental
+} // namespace std
+
+#endif // __cplusplus <= 201103L
+
+#endif // _GLIBCXX_EXPERIMENTAL_RATIO
diff --git a/libstdc++-v3/include/experimental/system_error b/libstdc++-v3/include/experimental/system_error
new file mode 100644
index 0000000..3f879da
--- /dev/null
+++ b/libstdc++-v3/include/experimental/system_error
@@ -0,0 +1,65 @@
+// Variable Templates For system_error -*- C++ -*-
+
+// Copyright (C) 2014 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file experimental/system_error
+ *  This is a TS C++ Library header.
+ */
+
+//
+// N3932 Variable Templates For Type Traits (Revision 1)
+//
+
+#ifndef _GLIBCXX_EXPERIMENTAL_SYSTEM_ERROR
+#define _GLIBCXX_EXPERIMENTAL_CHRONO 1
+
+#pragma GCC system_header
+
+#if __cplusplus <= 201103L
+# include <bits/c++14_warning.h>
+#else
+
+#include <system_error>
+
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+namespace experimental
+{
+inline namespace fundamentals_v1
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+// See C++14 §19.5, System error support
+template <typename _Tp>
+  constexpr bool is_error_code_enum_v = is_error_code_enum<_Tp>::value;
+template <typename _Tp>
+  constexpr bool is_error_condition_enum_v =
+    is_error_condition_enum<_Tp>::value;
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace fundamentals_v1
+} // namespace experimental
+} // namespace std
+
+#endif // __cplusplus <= 201103L
+
+#endif // _GLIBCXX_EXPERIMENTAL_SYSTEM_ERROR
diff --git a/libstdc++-v3/include/experimental/tuple b/libstdc++-v3/include/experimental/tuple
index bbfbdfa..da756b8 100644
--- a/libstdc++-v3/include/experimental/tuple
+++ b/libstdc++-v3/include/experimental/tuple
@@ -44,6 +44,9 @@ namespace experimental
 inline namespace fundamentals_v1
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
+  // See C++14 §20.4.2.5, tuple helper classes
+  template <typename _Tp>
+    constexpr size_t tuple_size_v = tuple_size<_Tp>::value;
 
   template <typename _Fn, typename _Tuple, std::size_t... _Idx>
     constexpr decltype(auto)
diff --git a/libstdc++-v3/testsuite/experimental/chrono/value.cc b/libstdc++-v3/testsuite/experimental/chrono/value.cc
new file mode 100644
index 0000000..c06c12a
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/chrono/value.cc
@@ -0,0 +1,34 @@
+// { dg-options "-std=gnu++14" }
+// { dg-do compile }
+
+// Copyright (C) 2014 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 moved_to of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/chrono>
+
+using namespace std::chrono;
+using namespace std::chrono::experimental;
+
+// These tests are rather simple, the front-end tests already test
+// variable templates, and the library tests for the underlying
+// traits are more elaborate. These are just simple sanity tests.
+
+static_assert(!treat_as_floating_point_v<int>
+	      && !treat_as_floating_point<int>::value, "");
+
+static_assert(treat_as_floating_point_v<double>
+	      && treat_as_floating_point<double>::value, "");
diff --git a/libstdc++-v3/testsuite/experimental/ratio/value.cc b/libstdc++-v3/testsuite/experimental/ratio/value.cc
new file mode 100644
index 0000000..4c8bdd7
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/ratio/value.cc
@@ -0,0 +1,50 @@
+// { dg-options "-std=gnu++14" }
+// { dg-do compile }
+
+// Copyright (C) 2014 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 moved_to of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/ratio>
+
+using namespace std;
+using namespace std::experimental;
+
+// These tests are rather simple, the front-end tests already test
+// variable templates, and the library tests for the underlying
+// traits are more elaborate. These are just simple sanity tests.
+
+static_assert(ratio_equal_v<ratio<1, 3>, ratio<2, 6>>
+	      && ratio_equal<ratio<1, 3>, ratio<2, 6>>::value, "");
+
+static_assert(ratio_not_equal_v<ratio<1, 3>, ratio<2, 5>>
+	      && ratio_not_equal<ratio<1, 3>, ratio<2, 5>>::value, "");
+
+static_assert(ratio_less_v<ratio<1, 4>, ratio<1, 3>>
+	      && ratio_less<ratio<1, 4>, ratio<1, 3>>::value, "");
+
+static_assert(ratio_less_equal_v<ratio<1, 4>, ratio<1, 4>>
+	      && ratio_less_equal_v<ratio<1, 4>, ratio<1, 3>>
+	      && ratio_less_equal<ratio<1, 4>, ratio<1, 4>>::value
+	      && ratio_less_equal<ratio<1, 4>, ratio<1, 3>>::value, "");
+
+static_assert(ratio_greater_v<ratio<1, 3>, ratio<1, 4>>
+	      && ratio_greater<ratio<1, 3>, ratio<1, 4>>::value, "");
+
+static_assert(ratio_greater_equal_v<ratio<1, 4>, ratio<1, 4>>
+	      && ratio_greater_equal_v<ratio<1, 3>, ratio<1, 4>>
+	      && ratio_greater_equal<ratio<1, 4>, ratio<1, 4>>::value
+	      && ratio_greater_equal<ratio<1, 3>, ratio<1, 4>>::value, "");
diff --git a/libstdc++-v3/testsuite/experimental/system_error/value.cc b/libstdc++-v3/testsuite/experimental/system_error/value.cc
new file mode 100644
index 0000000..66b40fb
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/system_error/value.cc
@@ -0,0 +1,40 @@
+// { dg-options "-std=gnu++14" }
+// { dg-do compile }
+
+// Copyright (C) 2014 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 moved_to of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/system_error>
+#include <future>
+using namespace std;
+using namespace std::experimental;
+
+// These tests are rather simple, the front-end tests already test
+// variable templates, and the library tests for the underlying
+// traits are more elaborate. These are just simple sanity tests.
+
+static_assert(is_error_code_enum_v<future_errc>
+	      && is_error_code_enum<future_errc>::value, "");
+
+static_assert(!is_error_code_enum_v<int>
+	      && !is_error_code_enum<int>::value, "");
+
+static_assert(is_error_condition_enum_v<errc>
+	      && is_error_condition_enum<errc>::value, "");
+
+static_assert(!is_error_condition_enum_v<int>
+	      && !is_error_condition_enum<int>::value, "");
diff --git a/libstdc++-v3/testsuite/experimental/tuple/tuple_size.cc b/libstdc++-v3/testsuite/experimental/tuple/tuple_size.cc
new file mode 100644
index 0000000..604e2c9
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/tuple/tuple_size.cc
@@ -0,0 +1,34 @@
+// { dg-options "-std=gnu++14" }
+// { dg-do compile }
+
+// Copyright (C) 2014 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 moved_to of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/tuple>
+
+using namespace std;
+using namespace std::experimental;
+
+// These tests are rather simple, the front-end tests already test
+// variable templates, and the library tests for the underlying
+// traits are more elaborate. These are just simple sanity tests.
+
+static_assert(tuple_size_v<tuple<int>> == 1
+	      && tuple_size<tuple<int>>::value == 1, "");
+
+static_assert(tuple_size_v<tuple<int, int>> == 2
+	      && tuple_size<tuple<int, int>>::value == 2, "");