forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <functional>
|
|
// REQUIRES: c++98 || c++03 || c++11 || c++14
|
|
|
|
// template <class Fn>
|
|
// class binder2nd
|
|
// : public unary_function<typename Fn::first_argument_type, typename Fn::result_type>
|
|
// {
|
|
// protected:
|
|
// Fn op;
|
|
// typename Fn::second_argument_type value;
|
|
// public:
|
|
// binder2nd(const Fn& x, const typename Fn::second_argument_type& y);
|
|
//
|
|
// typename Fn::result_type operator()(const typename Fn::first_argument_type& x) const;
|
|
// typename Fn::result_type operator()(typename Fn::first_argument_type& x) const;
|
|
// };
|
|
|
|
#include <functional>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
#include "../test_func.h"
|
|
|
|
class test
|
|
: public std::binder2nd<test_func>
|
|
{
|
|
typedef std::binder2nd<test_func> base;
|
|
public:
|
|
test() : std::binder2nd<test_func>(test_func(3), 4.5) {}
|
|
|
|
void do_test()
|
|
{
|
|
static_assert((std::is_base_of<
|
|
std::unary_function<test_func::first_argument_type,
|
|
test_func::result_type>,
|
|
test>::value), "");
|
|
assert(op.id() == 3);
|
|
assert(value == 4.5);
|
|
|
|
int i = 5;
|
|
assert((*this)(i) == 22.5);
|
|
assert((*this)(5) == 0.5);
|
|
}
|
|
};
|
|
|
|
int main()
|
|
{
|
|
test t;
|
|
t.do_test();
|
|
}
|