+2019-07-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/bit (__cpp_lib_endian): Define.
+ * include/std/version (__cpp_lib_endian): Define.
+ * testsuite/26_numerics/endian/2.cc: New.
+ * testsuite/26_numerics/endian/3.cc: New.
+ * testsuite/26_numerics/endian/4.cc: New.
+
2019-07-26 François Dumont <fdumont@gcc.gnu.org>
* testsuite/util/testsuite_iterators.h
log2p1(_Tp __x) noexcept
{ return std::__log2p1(__x); }
+#define __cpp_lib_endian 201907L
+
/// Byte order
enum class endian
{
#if __cpp_impl_destroying_delete
# define __cpp_lib_destroying_delete 201806L
#endif
+#define __cpp_lib_endian 201907L
#define __cpp_lib_erase_if 201900L
#define __cpp_lib_interpolate 201902L
#ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
--- /dev/null
+// Copyright (C) 2019 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
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do compile { target c++2a } }
+
+#include <bit>
+
+#ifndef __cpp_lib_endian
+# error "Feature-test macro for endian missing in <bit>"
+#elif __cpp_lib_endian != 201907L
+# error "Feature-test macro for endian has wrong value in <bit>"
+#endif
--- /dev/null
+// Copyright (C) 2019 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
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do compile { target c++2a } }
+
+#include <version>
+
+#ifndef __cpp_lib_endian
+# error "Feature-test macro for endian missing in <version>"
+#elif __cpp_lib_endian != 201907L
+# error "Feature-test macro for endian has wrong value in <version>"
+#endif
--- /dev/null
+// Copyright (C) 2019 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
+// <http://www.gnu.org/licenses/>.
+
+// { dg-do compile { target c++17_down } }
+
+#include <bit>
+#include <version>
+
+#ifdef __cpp_lib_endian
+# error "Feature-test macro for endian defined before C++20"
+#endif