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Motiejus Jakštys
2023-08-21 13:50:16 +03:00
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man_MANS = cmph.1
EXTRA_DIST=cmph.1

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.TH CMPH "1" "October 2007" "cmph 0.6" "User Commands"
.SH NAME
cmph \- minimum perfect hashing tool
.SH SYNOPSIS
.B cmph
[\-v] [\-h] [\-V] [\-k nkeys] [\-f hash_function] [\-g [\-c value][\-s seed] ] [\-a algorithm] [\-M memory_in_MB] [\-b BRZ_parameter] [\-d tmp_dir] [\-m file.mph] keysfile
.SH DESCRIPTION
.PP
Command line tool to generate and query minimal perfect hash functions.
.PP
Please refer to http://cmph.sf.net for full documentation.
.TP
\fB\-h\fR
Print an help message
.TP
\fB\-c\fR
This value determines: the number of vertices in the graph for the algorithms BMZ and CHM; the number of bits per key required in the FCH algorithm
.TP
\fB\-a\fR
Algorithm. Valid values are: bmz, bmz8, chm, brz, fch
.TP
\fB\-f\fR
hash function (may be used multiple times). valid values are: djb2, fnv, jenkins, sdbm
.TP
\fB\-V\fR
Print version number and exit
.TP
\fB\-v\fR
Increase verbosity (may be used multiple times)
.TP
\fB\-k\fR
Number of keys
.TP
\fB\-g\fR
Generation mode
.TP
\fB\-s\fR
Random seed
.TP
\fB\-m\fR
Minimum perfect hash function file
.TP
\fB\-M\fR
Main memory availability (in MB)
.TP
\fB\-d\fR
Temporary directory used in brz algorithm
.TP
\fB\-b\fR
Parameter of BRZ algorithm to make the maximal number of keys in a bucket lower than 256
.TP
\fBkeysfile\fR
Line separated file with keys
.SH EXAMPLE
$ # Using the default algorithm (chm) for constructing a mphf
.br
$ # for keys in file keys_file. Lines in keys_file _must_ be unique.
.br
$ ./cmph \-v \-g keys_file
.br
$ # Query id of keys in the file keys_query
.br
$ ./cmph \-v \-m keys_file.mph keys_query
.SH AUTHOR
This manual page was written by Enrico Tassi <gareuselesinge@users.sourceforge.net>,
for the Debian project (but may be used by others).