https://github.com/jcash/compiletimehashes

Some constexpr hash functions that lets you do your hashes at compile time
https://github.com/jcash/compiletimehashes

Last synced: about 1 year ago
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Some constexpr hash functions that lets you do your hashes at compile time

• Host: GitHub
• URL: https://github.com/jcash/compiletimehashes
• Owner: JCash
• License: mit
• Created: 2016-09-24T07:43:29.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2016-09-24T07:51:20.000Z (over 9 years ago)
• Last Synced: 2025-01-24T12:45:33.120Z (over 1 year ago)
• Language: C++
• Size: 206 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
hashes

======

A set of common hash functions implemented using C++11 constexpr and user string literals (optional)

How to use

==========

For the barebone usage, just drop the include/MurmurHash3c.h into your project.

It contains the 

	constexpr uint64_t MurmurHash3c_64(const ConstStringMM3& cs, uint64_t seed = 0);

	inline void MurmurHash3c_x64_128( const char* key, int len, const uint32_t seed, void* out );

which both make use of the class

	class ConstStringMM3;

	

For the extended use, there is a high(er) level api in "hash.h".

Performance

===========

When tested in the SMHasher framework it was approximately 30%-50% slower.

(Tested on a 64 bit Macbook Pro @ 2.26 Ghz dual core with 2GB ram)

License

=======

The project has a MIT license (MurmurHash3 is public domain)

Links

=====

https://code.google.com/p/smhasher/wiki/MurmurHash