Fuzzy Match Logic for Numerical Values Post: 302302610

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Top Forums Programming Fuzzy Match Logic for Numerical Values Post 302302610 by marcus121 on Tuesday 31st of March 2009 12:01:42 PM

03-31-2009

Registered User

Fuzzy Match Logic for Numerical Values

I have searched the internet (including these forums) and perhaps I'm not using the right wording.

What I'm looking for is a function (preferably C) that analyzes the similitude of two numerical or near-numerical values, and returns either a true/false (match/nomatch) or a return code that corresponds to the type of near-match relationship that was encountered. The former would require the user to pre-define (through arguments/environ/variables) the acceptable tolerance or conditions, whereas the latter would be subsequently evaluated by the caller to see if the return code indicated a relationship (between the two numbers) within the tolerances of the application.

For example, each of these could be a different return code and the caller could determine whether or not the relationship is considered a "match" for the purposes of his application:
2401 and 2410 (trailing juxtaposition)
2401 and 4201 (leading juxtaposition)
2401 and 2041 (imbedded juxtaposition)
2479 and 24799 (substring match/trailing dupe)
12 and 12A (this is what I meant above by "near numerical" values)
etc.

Any information that would help me find some code that accomplishes this would be greatly appreciated.
~Marcus

marcus121

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zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)