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from gperf.texi on 2 January 2017 -->
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<TITLE>Perfect Hash Function Generator - 2 Introduction</TITLE>
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Go to the first, previous, next, last section, table of contents.
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gperf is a perfect hash function generator written in C++. It
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transforms an n element user-specified keyword set W into a
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perfect hash function F. F uniquely maps keywords in
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W onto the range 0..k, where k >= n-1. If k
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= n-1 then F is a minimal perfect hash function.
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gperf generates a 0..k element static lookup table and a
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pair of C functions. These functions determine whether a given
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character string s occurs in W, using at most one probe into
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the lookup table.
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gperf currently generates the reserved keyword recognizer for
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lexical analyzers in several production and research compilers and
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language processing tools, including GNU C, GNU C++, GNU Java, GNU Pascal,
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GNU Modula 3, and GNU indent. Complete C++ source code for gperf is
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available from http://ftp.gnu.org/pub/gnu/gperf/.
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A paper describing gperf's design and implementation in greater
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detail is available in the Second USENIX C++ Conference proceedings
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or from http://www.cs.wustl.edu/~schmidt/resume.html.
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Go to the first, previous, next, last section, table of contents.
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</BODY>
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