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https://github.com/FEX-Emu/xxHash.git
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19cd4ffed3
Inlining hash functions is generally beneficial for performance. It becomes extremely beneficial whenever input size is a compile-time constant. To inline xxhash functions, one just needs to include it this way : One potential issue is that "xxhash.h" may have already been included previously, typically as part of another included `*.h` . In which case, the second `#include` statement will have no effect. This patch fixes this situation : now, when XXH_INLINE_ALL is defined, all identifiers are renamed, in order to avoid name collision and confusion with already included indentifiers. The renaming process uses XXH_NAMESPACE. XXH_NAMESPACE must be available (i.e. not already used) for renaming to work. A test has been added in `tests/` to ensure this scenario works correctly.
43 lines
1.8 KiB
C
43 lines
1.8 KiB
C
/*
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* xxHash - Fast Hash algorithm
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* Copyright (C) 2012-2016, Yann Collet
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*
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* BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You can contact the author at :
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* - xxHash homepage: http://www.xxhash.com
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* - xxHash source repository : https://github.com/Cyan4973/xxHash
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*/
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/* xxhash.c instantiates functions defined in xxhash.h
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*/
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#define XXH_STATIC_LINKING_ONLY /* access advanced declarations */
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#define XXH_IMPLEMENTATION /* access definitions */
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#include "xxhash.h"
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