N3421 C++1y Transparent functors

	N3421 C++1y Transparent functors
	* include/bits/stl_function.h (plus<void>, minus<void>,
	multiplies<void>, divides<void>, modulus<void>, negate<void>,
	equal_to<void>, not_equal_to<void>, greater<void>, less<void>,
	greater_equal<void>, less_equal<void>, logical_and<void>,
	logical_or<void>, logical_not<void>, bit_and<void>, bit_or<void>,
	bit_xor<void>, bit_not<void>): Define.
	* doc/xml/manual/status_cxx2014.xml: Update.
	* testsuite/20_util/function_objects/comparisons_void.cc: New.

	* include/bits/stl_function.h: Implement N3421.
	* testsuite/20_util/function_objects/comparisons_void.cc: New.

From-SVN: r204290

libstdc++-v3/ChangeLog

+2013-11-01  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	N3421 C++1y Transparent functors
+	* include/bits/stl_function.h (plus<void>, minus<void>,
+	multiplies<void>, divides<void>, modulus<void>, negate<void>,
+	equal_to<void>, not_equal_to<void>, greater<void>, less<void>,
+	greater_equal<void>, less_equal<void>, logical_and<void>,
+	logical_or<void>, logical_not<void>, bit_and<void>, bit_or<void>,
+	bit_xor<void>, bit_not<void>): Define.
+	* doc/xml/manual/status_cxx2014.xml: Update.
+	* testsuite/20_util/function_objects/comparisons_void.cc: New.
+
 2013-10-31  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* include/std/tuple (_Index_tuple, _Build_index_tuple): Move to

libstdc++-v3/doc/xml/manual/status_cxx2014.xml

@@ -209,7 +209,7 @@ particular release.
 	</link>
       </entry>
       <entry>Making Operator Functors greater&lt;&gt;</entry>
-      <entry>WIP</entry>
+      <entry>Y</entry>
       <entry/>
     </row>
 

libstdc++-v3/testsuite/20_util/function_objects/comparisons_void.cc

+// { dg-options " -std=gnu++1y " }
+// { dg-do compile }
+
+// Copyright (C) 2013 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/>.
+
+// 20.3.3 Comparisons
+
+#include <functional>
+
+struct R { };
+
+struct L
+{
+  L operator+(const R&) const { return *this; }
+  L operator-(const R&) const { return *this; }
+  L operator*(const R&) const { return *this; }
+  L operator/(const R&) const { return *this; }
+  L operator%(const R&) const { return *this; }
+  L operator-() const { return *this; }
+
+  bool operator==(const R&) const { return true; }
+  bool operator!=(const R&) const { return false; }
+  bool operator<(const R&) const { return false; }
+  bool operator<=(const R&) const { return true; }
+  bool operator>(const R&) const { return false; }
+  bool operator>=(const R&) const { return true; }
+
+  bool operator&&(const R&) const { return true; }
+  bool operator||(const R&) const { return true; }
+  bool operator!() const { return false; }
+
+  int operator&(const R&) const { return 1; }
+  int operator|(const R&) const { return 1; }
+  int operator^(const R&) const { return 0; }
+  int operator~() const { return 0; }
+};
+
+L l;
+R r;
+
+// test unary function objects
+template<typename F, typename Check = typename F::is_transparent>
+bool
+test1(F f)
+{
+  f(l);
+  return true;
+}
+
+// test binary function objects
+template<typename F, typename Check = typename F::is_transparent>
+bool
+test2(F f)
+{
+  f(l, r);
+  return true;
+}
+
+auto plus       = test2( std::plus<>() );
+auto minus      = test2( std::minus<>() );
+auto multiplies = test2( std::multiplies<>() );
+auto divides    = test2( std::divides<>() );
+auto modulus    = test2( std::modulus<>() );
+auto negate     = test1( std::negate<>() );
+
+auto equal_to       = test2( std::equal_to<>() );
+auto not_equal_to   = test2( std::not_equal_to<>() );
+auto greater        = test2( std::greater<>() );
+auto less           = test2( std::less<>() );
+auto greater_equal  = test2( std::greater_equal<>() );
+auto less_equal     = test2( std::less_equal<>() );
+
+auto logical_and    = test2( std::logical_and<>() );
+auto logical_or     = test2( std::logical_or<>() );
+auto logical_not    = test1( std::logical_not<>() );
+
+auto bit_and        = test2( std::bit_and<>() );
+auto bit_or         = test2( std::bit_or<>() );
+auto bit_xor        = test2( std::bit_xor<>() );
+auto bit_not        = test1( std::bit_not<>() );