joerg
ab86636a8f
Adding missing new lines in output.
2012-11-23 02:57:57 +00:00
joerg
4edfbdbb40
Simplify the BDZ compression function, making it smaller at the same
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time. Fixes a bug where non-minimal hash functions could be created.
Add regression tests for BDZ, including the map output functionality.
2012-09-25 20:53:46 +00:00
joerg
84d44fb884
The output function is only order preserving for chm and chm3, so
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correct that part of the documentation and also mention what the default
algorithm is.
2012-05-31 21:36:06 +00:00
joerg
10769988ef
Add support for build as part of the toolchain. Add option for
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deterministic output (-p), which replaces the random seed with a
incremental counter.
2011-10-21 23:47:11 +00:00
joerg
f9c779de17
Add a check for duplicate keys. The check is run once and quadratic in
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the hash collision chain length, which is expected to be fairly low.
2010-03-03 01:55:04 +00:00
joerg
97b3b0515b
Fix a comment.
2010-03-01 21:46:58 +00:00
joerg
042b29cdb1
Use a more compact presentation for g if the size is small enough.
2009-08-24 17:12:46 +00:00
joerg
976b948d1c
GCC's propolice complains about dynamic stack arrays to bite the bullet
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and introduce a compile constant that limits the number of hash results.
Verify that the choosen hash function is not beyond that limit and just
the upper limit as static size in the graph tree functions.
2009-08-22 17:52:17 +00:00
joerg
81e49626c4
GCC doesn't trace switch (foo & 7) completely, so add a default: abort()
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to avoid warnings about unused variables.
Consistently use \t for the output function.
2009-08-17 14:15:07 +00:00
joerg
03c8ba1c27
Add nbperf(1), a minimal perfect hash function generator.
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Implemented are the 3-graph BDZ algorithm as well as the
2-graph and 3-graph CHM algorithms. All algorithms have expected
linear run time and the smallest functions need around 2.85 bit/key.
2009-08-15 16:21:04 +00:00
