29 lines
675 B
C++
29 lines
675 B
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/utils/common.h"
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namespace td {
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template <class KeyT>
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bool is_hash_table_key_empty(const KeyT &key) {
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return key == KeyT();
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}
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inline uint32 randomize_hash(size_t h) {
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auto result = static_cast<uint32>(h & 0xFFFFFFFF);
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result ^= result >> 16;
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result *= 0x85ebca6b;
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result ^= result >> 13;
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result *= 0xc2b2ae35;
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result ^= result >> 16;
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return result;
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}
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} // namespace td
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