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