mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 01:51:59 +00:00
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
|
#include <DB/Common/HashTable/Hash.h>
|
||
|
|
#include <DB/IO/ReadHelpers.h>
|
||
|
|
#include <DB/IO/WriteHelpers.h>
|
||
|
|
|
||
|
|
|
||
|
|
namespace DB
|
||
|
|
{
|
||
|
|
|
||
|
|
/// Для агрегации по SipHash или конкатенации нескольких полей.
|
||
|
|
struct UInt128
|
||
|
|
{
|
||
|
|
UInt64 first;
|
||
|
|
UInt64 second;
|
||
|
|
|
||
|
|
bool operator== (const UInt128 rhs) const { return first == rhs.first && second == rhs.second; }
|
||
|
|
bool operator!= (const UInt128 rhs) const { return first != rhs.first || second != rhs.second; }
|
||
|
|
|
||
|
|
bool operator== (const UInt64 rhs) const { return first == rhs && second == 0; }
|
||
|
|
bool operator!= (const UInt64 rhs) const { return first != rhs || second != 0; }
|
||
|
|
|
||
|
|
UInt128 & operator= (const UInt64 rhs) { first = rhs; second = 0; return *this; }
|
||
|
|
};
|
||
|
|
|
||
|
|
struct UInt128Hash
|
||
|
|
{
|
||
|
|
DefaultHash<UInt64> hash64;
|
||
|
|
size_t operator()(UInt128 x) const { return hash64(hash64(x.first) ^ x.second); }
|
||
|
|
};
|
||
|
|
|
||
|
|
struct UInt128TrivialHash
|
||
|
|
{
|
||
|
|
size_t operator()(UInt128 x) const { return x.first; }
|
||
|
|
};
|
||
|
|
|
||
|
|
inline void readBinary(UInt128 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
|
||
|
|
inline void writeBinary(const UInt128 & x, WriteBuffer & buf) { writePODBinary(x, buf); }
|
||
|
|
|
||
|
|
}
|