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-\section{Built-in Module \module{soundex}}
-\label{module-soundex}
-\bimodindex{soundex}
-
-
-The soundex algorithm takes an English word, and returns an
-easily-computed hash of it; this hash is intended to be the same for
-words that sound alike. This module provides an interface to the
-soundex algorithm.
-
-Note that the soundex algorithm is quite simple-minded, and isn't
-perfect by any measure. Its main purpose is to help looking up names
-in databases, when the name may be misspelled --- soundex hashes common
-misspellings together.
-
-\begin{funcdesc}{get_soundex}{string}
-Return the soundex hash value for a word; it will always be a
-6-character string. \var{string} must contain the word to be hashed,
-with no leading whitespace; the case of the word is ignored. (Note
-that the original algorithm produces a 4-character result.)
-\end{funcdesc}
-
-\begin{funcdesc}{sound_similar}{string1, string2}
-Compare the word in \var{string1} with the word in \var{string2}; this
-is equivalent to
-\code{get_soundex(\var{string1})} \code{==}
-\code{get_soundex(\var{string2})}.
-\end{funcdesc}
-
-
-\begin{seealso}
-
-\seetext{Donald E. Knuth, \emph{Sorting and Searching,} vol. 3 in
-``The Art of Computer Programming.'' Addison-Wesley Publishing
-Company: Reading, MA: 1973. pp.\ 391-392. Discusses the origin and
-usefulness of the algorithm, as well as the algorithm itself. Knuth
-gives his sources as \emph{U.S. Patents 1261167} (1918) and
-\emph{1435663} (1922), attributing the algorithm to Margaret K. Odell
-and Robert C. Russel. Additional references are provided.}
-
-\end{seealso}