31 lines
1.0 KiB
C++
31 lines
1.0 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2020 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_BASE_HASH_H_
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#define XENIA_BASE_HASH_H_
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#include <cstddef>
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namespace xe {
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namespace hash {
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// For use in unordered_sets and unordered_maps (primarily multisets and
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// multimaps, with manual collision resolution), where the hash is calculated
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// externally (for instance, as XXH3), possibly requiring context data rather
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// than a pure function to calculate the hash
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template <typename Key>
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struct IdentityHasher {
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size_t operator()(const Key& key) const { return static_cast<size_t>(key); }
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};
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} // namespace hash
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} // namespace xe
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#endif // XENIA_BASE_HASH_H_
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