2010-05-11 21:42:16 +02:00
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//
|
2010-05-11 23:36:01 +02:00
|
|
|
// The LLVM Compiler Infrastructure
|
2010-05-11 21:42:16 +02:00
|
|
|
//
|
2010-11-16 23:09:02 +01:00
|
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
|
|
// Source Licenses. See LICENSE.TXT for details.
|
2010-05-11 21:42:16 +02:00
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
// <functional>
|
|
|
|
|
|
|
|
// template <class T>
|
|
|
|
// struct hash
|
|
|
|
// : public unary_function<T, size_t>
|
|
|
|
// {
|
|
|
|
// size_t operator()(T val) const;
|
|
|
|
// };
|
|
|
|
|
|
|
|
// Not very portable
|
|
|
|
|
|
|
|
#include <bitset>
|
|
|
|
#include <cassert>
|
|
|
|
#include <type_traits>
|
|
|
|
|
|
|
|
template <std::size_t N>
|
|
|
|
void
|
|
|
|
test()
|
|
|
|
{
|
|
|
|
typedef std::bitset<N> T;
|
|
|
|
typedef std::hash<T> H;
|
|
|
|
static_assert((std::is_base_of<std::unary_function<T, std::size_t>,
|
|
|
|
H>::value), "");
|
|
|
|
H h;
|
|
|
|
T bs(static_cast<unsigned long long>(N));
|
|
|
|
assert(h(bs) == N);
|
|
|
|
}
|
|
|
|
|
|
|
|
int main()
|
|
|
|
{
|
|
|
|
test<0>();
|
|
|
|
test<10>();
|
|
|
|
test<100>();
|
|
|
|
test<1000>();
|
|
|
|
}
|