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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
//===-- llvm/Support/DJB.h ---DJB Hash --------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for the DJ Bernstein hash function.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_DJB_H
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#define LLVM_SUPPORT_DJB_H
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#include "llvm/ADT/StringRef.h"
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namespace llvm {
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/// The Bernstein hash function used by the DWARF accelerator tables.
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inline uint32_t djbHash(StringRef Buffer, uint32_t H = 5381) {
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for (unsigned char C : Buffer.bytes())
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H = (H << 5) + H + C;
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return H;
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}
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/// Computes the Bernstein hash after folding the input according to the Dwarf 5
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/// standard case folding rules.
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uint32_t caseFoldingDjbHash(StringRef Buffer, uint32_t H = 5381);
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} // namespace llvm
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#endif // LLVM_SUPPORT_DJB_H
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