File: version-1-5.text

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	AUTOCLASS C VERSION 1.5 NOTES 
====================================================================== 
======================================================================

Documentation:
------------------------------

  1. autoclass/doc/introduction-c.text, kdd-95.ps, tr-fia-90-12-7-01.ps -
        Postscript papers are now included as postscript, instead of
        uuencoded postscript.

  2. autoclass/doc/preparation-c.text -
        Added binary data file input option.


Programming:
------------------------------						

  1. autoclass-c/prog/autoclass.c -
        In "main", call "validate_data_pathname" to allow either .db2 ("ascii")
        or .db2-bin ("binary") data file extensions.  The identifying header of
        a .db2-bin file is
        - ".db2-bin" - char[8]
        - 32-bit integer with byte-length of each data case.
        The data cases follow in binary "float" format -- 32 bit fields.

  2. autoclass-c/prog/io-results.c -
        Add "validate_data_pathname".

  3. autoclass-c/prog/autoclass.h -
        Function prototype definition change/addition.  Add DATA_BINARY_FILE_TYPE.
        Change character array variables of length MAX_PATHNAME_LENGTH (81) to
        variables of type fxlstr (length 160) to handle very long file
        pathnames.  #define M_PI if not defined -- needed under Solaris.  Use
        pow rather than exp2, since exp2 not available under Solaris gcc 2.6.3.

  4. autoclass-c/prog/io-read-data.c -
        In "read_database" change NULL to FALSE, so that int/int rather than
        int/ptr comparison is made. Detected by Solaris GNU gcc.

        "read_database", "read_data" and "read_database_doit" modified to handle
        binary data files.

  5. autoclass-c/prog/globals.h, globals.c -
        Add G_data_file_format.

  6. autoclass-c/prog/search-control.c -
        In "autoclass-search" do not open/close ".db2" data file.

        Check for non-NULL "best_clsfs" prior to writing ".results[-bin]"
        file.

  7. autoclass-c/prog/struct-data.c -
        In "expand_database", call "validate_data_pathname" to allow either
        .db2 ("ascii") or .db2-bin ("binary") data file extensions.

  8. autoclass-c/prog/search-basic.c -
        Modified "generate_clsf"'s call to "read_database".

  9. autoclass-c/prog/utils.c, io-read-data.c, io-results-bin.c & io-results.c -
        Since the include file <sys/fcntlcom.h> is not available in the Solaris
        GNU gcc implementation, hard code them in "fcntlcom-ac.h".  Solaris 2.4
        fails open, unless fopen/fclose is done first.

 10. autoclass-c/load-ac -
        Add "fcntlcom-ac.h".  Use "clean" make target.

 11. autoclass-c/prog/search-control-2.c -
        In "print_report", do not use NULL as value of delta_ln_p.

        In "print_final_report", corrected the overwriting of a string array
        in cases where long pathnames are used.

 12. autoclass-c/prog/utils.c, intf-reports.c, search-control.c, & getparams.c -
        Correct compiler warnings found by Solaris gcc version 2.6.3.

 13. autoclass-c/prog/init.c -
        In "init", use getcwd, rather than getwd for Solaris compatibility.
   
 14. autoclass-c/prog/autoclass.make -
        Include "clean" target.  Add compiler options "-pedantic -Wall".

 15. autoclass-c/prog/utils.c -
        Add "safe_sprintf", and use it in other programs in lieu of "sprintf"
        to detect string overwrites.  Corrected string overwrite which caused
        abort and the message "Premature end of file reading symbol table".

 16. autoclass-c/prog/intf-reports.c -
        In "search_summary" change search->n to search->n_tries to prevent
        segment violation when there are duplicates.

======================================================================