115 lines
3.4 KiB
Plaintext
115 lines
3.4 KiB
Plaintext
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////
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Copyright 2005-2008 Daniel James
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Copyright 2022 Christian Mazakas
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Copyright 2022 Peter Dimov
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Distributed under the Boost Software License, Version 1.0.
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https://www.boost.org/LICENSE_1_0.txt
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////
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[#links]
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= Links
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:idprefix: links_
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*A Proposal to Add Hash Tables to the Standard Library* +
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http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2003/n1456.html
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The hash table proposal explains much of the design. The hash function object is discussed in Section D.
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---
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*The {cpp} Standard Library Technical Report* +
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http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf
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Contains the hash function specification in section 6.3.2.
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---
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*Library Extension Technical Report Issues List* +
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http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1837.pdf
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The library implements the extension described in Issue 6.18, pages 63-67.
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---
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*Methods for Identifying Versioned and Plagiarised Documents* +
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_Timothy C. Hoad, Justin Zobel_ +
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https://people.eng.unimelb.edu.au/jzobel/fulltext/jasist03thz.pdf
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Contains the hash function that the initial implementation of `boost::hash_combine` was based on.
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---
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*Performance in Practice of String Hashing Functions* +
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_M.V. Ramakrishna, J. Zobel_ +
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In Proc. Int. Conf. on Database Systems for Advanced Applications, pages 215-223, Melbourne, Australia, April 1997. +
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https://www.comp.nus.edu.sg/~lingtw/dasfaa_proceedings/DASFAA97/P215.pdf
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Referenced in the above paper as the source of the hash function.
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---
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*MurmurHash3 hash function source* +
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_Austin Appleby_ +
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https://github.com/aappleby/smhasher/blob/61a0530f28277f2e850bfc39600ce61d02b518de/src/MurmurHash3.cpp#L65-L90
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Austin Appleby's 32 and 64 bit finalization mixing functions that
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introduced the "xmxmx" general form of a high quality bijective
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transformation that approximates a random permutation.
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---
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*SMHasher hash function test suite* +
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_Austin Appleby_ +
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https://github.com/aappleby/smhasher
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Contains a battery of tests for evaluating hash functions. The current
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64 bit implementation of `boost::hash` for strings passes SMHasher.
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Previous iterations did not.
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---
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*Better Bit Mixing - Improving on MurmurHash3's 64-bit Finalizer* +
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_David Stafford_ +
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https://zimbry.blogspot.com/2011/09/better-bit-mixing-improving-on.html
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Describes the so-called "variant 13" mixing function, an improvement
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over `fmix64` from MurmurHash3, made famous by its adoption by the
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`splitmix64` http://xorshift.di.unimi.it/splitmix64.c[random number generator].
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---
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*Stronger, better, morer, Moremur; a better Murmur3-type mixer* +
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_Pelle Evensen_ +
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https://mostlymangling.blogspot.com/2019/12/stronger-better-morer-moremur-better.html
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Describes Moremur, an improvement over MurmurHash3 `fmix64` and Stafford
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"variant 13".
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---
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*Improved mx3 and the RRC test* +
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_Jon Maiga_ +
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http://jonkagstrom.com/mx3/mx3_rev2.html
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Contains another improvement over MurmurHash3 `fmix64` and "variant 13". This
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is what the current implementation of `boost::hash_combine` uses when
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`std::size_t` is 64 bits.
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---
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*Prospecting for Hash Functions* +
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_Chris Wellons_ +
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https://nullprogram.com/blog/2018/07/31/
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Describes https://github.com/skeeto/hash-prospector[Hash Prospector],
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a utility for discovering and evaluating mixing functions.
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---
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*New best known functions* +
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_"TheIronBorn"_ +
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https://github.com/skeeto/hash-prospector/issues/19
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Describes a good 32 bit mixing function, used by the current implementation
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of `boost::hash_combine` when `std::size_t` is 32 bits.
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