Xi Copyright Notes
Xi is freeware, and we encourage you to share copies and upload
it to bulletin-board systems. 

Permission is granted to anyone to use this software for any purpose,
excluding commercial use and to redistribute it freely,
subject to the following restrictions:

        The origin of this software must not be misrepresented; you must not
        claim that you wrote the original software. If you use this software
        in a product, an acknowledgement in the product documentation is
        required.
 
        Distributions of the software must include the file copyright with
        this statement.

Users of Xi must accept this disclaimer of warranty: Xi is
provided as is. The authors disclaim all warranties, expressed or
implied, including, without limitation, the warranties of merchantibility
and of fitness for any purpose. The authors assume no liability for
damages, direct or consequential, which may result from the use of Xi.
 
All company or product names are trademarks or registered trademarks or
service marks of their respective owners and appear for identification
purposes only.

Note that Xi uses some freeware algorithms, which due to their
own copyright may require you to license if you use them in a
commercial program or distribute this program on a for-profit basis:


 Xi's linear algebra functions are mainly based on 
 (ftp://ftp.netlib.org/lapack) LAPACK and 
 (ftp://ftp.netlib.org/linpack) LINPACK.
 The fit function (least orthogonal distance fits) is based on 
 (ftp://ftp.netlib.org/linpack) ODRPACK.
 Fast fourier tranformation is done with the subroutine 
 (http://math.nist.gov/cgi-bin/gams-serve/list-module-components/GO/FFT/8187.html)
 multifft in the GO collection.
 To solve multi-dim. ordinary differential equations Xi uses the
 (ftp://ftp.netlib.org/odepack) ODEPACK.
 Minimiziation and root finding is based on 
 (ftp://ftp.netlib.org/minpack) MINPACK.
 Special functions are computed with
 (ftp://ftp.netlib.org/specfun) SPECFUN.
 Random number generators are based on 
 (ftp://ftp.netlib.org/random/zufall.f) zufall.f of the package 
 (ftp://ftp.netlib.org/random) RANDOM
 The Xi function spline2d is based on the subroutine
 (http://math.nist.gov/cgi-bin/gams-serve/list-module-components/CMLIB/LOTPS/838.html)
 LOTPS of the module LOTPS from package CMLIB.
 Image processing is mainly based on the 
 (ftp://ftp.zam.kfa-juelich.de/pub/graphics/pbmplus) netpbm plus tools.
 Handling of TIFF-files is based on Sam Leffler's TIFF Software package libtiff.
 (see the http://zaphod.uni-muenster.de/xi/external/libtiff.readme) Readme
 file of netpbm plus tools for further informations)
 Input and output of jpeg files is based in part on the work of
 the Independent JPEG Group. Get the original libjpeg from
 ftp://ftp.uu.net:/graphics/jpeg if you need 
 docs for the JPEG library or have a look at the
 (http://zaphod.uni-muenster.de/xi/external/Readme.libjpeg) Readme file.


OK, now that we got this ground covered in a more 'normal' tone:

Have fun with Xi !

