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, inlcuding commercial applications 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 LAPACK and LINPACK.
• The fit function (least orthogonal distance fits) is based on ODRPACK.
• Fast fourier tranformation is done with the subroutine multifft in the GO collection.
• To solve multi-dim. ordinary differential equations Xi uses the ODEPACK.
• Minimiziation and root finding is based on MINPACK.
• Special functions are computed with SPECFUN.
• Random number generators are based on zufall.f of the package RANDOM
• The Xi function spline2d is based on the subroutine LOTPS of the module LOTPS from package CMLIB.
• Image processing is mainly based on the netpbm plus tools. (Readme file of netpbm plus tools)
• Handling of TIFF-files is based on Sam Leffler's TIFF Software package libtiff. (see the 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.uu.net if you need docs for the JPEG library or have a look at the Readme file.

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

Have fun with Xi !