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#pragma once
#include <cybozu/inttype.hpp>
namespace cybozu {
template<class Iter>
uint32_t hash32(Iter begin, Iter end, uint32_t v = 0)
{
if (v == 0) v = 2166136261U;
while (begin != end) {
v ^= *begin++;
v *= 16777619;
}
return v;
}
template<class Iter>
uint64_t hash64(Iter begin, Iter end, uint64_t v = 0)
{
if (v == 0) v = 14695981039346656037ULL;
while (begin != end) {
v ^= *begin++;
v *= 1099511628211ULL;
}
v ^= v >> 32;
return v;
}
template<class T>
uint32_t hash32(const T *x, size_t n, uint32_t v = 0)
{
return hash32(x, x + n, v);
}
template<class T>
uint64_t hash64(const T *x, size_t n, uint64_t v = 0)
{
return hash64(x, x + n, v);
}
} // cybozu
namespace boost {
template<class T>
struct hash;
} // boost
#if CYBOZU_CPP_VERSION >= CYBOZU_CPP_VERSION_CPP11
#include <functional>
#else
namespace std { CYBOZU_NAMESPACE_TR1_BEGIN
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4099) // missmatch class and struct
#endif
#ifndef __APPLE__
template<class T>
struct hash;
#endif
#ifdef _MSC_VER
#pragma warning(pop)
#endif
CYBOZU_NAMESPACE_TR1_END } // std
#endif
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