Quaternion

• (pflipp)
• Frank Shearar (fbs)

• Squeak - The official distribution of Squeak.
• Non official package - Just a package for Squeak, no community guarantees. :)
• SqueakL + MIT - Dual licensed under both SqueakL and MIT. This enables both base Squeak inclusion and 100% reuse. Recommended prior to 4.0.
• Squeak3.9-alpha - This is the now obsolete development version of 3.9.
• Class libraries - Class libraries for Squeak to use for development
• Squeak3.8 - Released 25 May 2005.
• Squeak3.9 - Released 8 Dec 2006.
• Squeak4.0 - Released 15 Mar 2010
• Squeak4.2 - Released February 11th, 2011
• Squeak4.3 - Released December 23rd, 2011
• Squeak 4.4 - Released December, 2012
• Squeak3.10 - Released 11 May 2008
• Squeak4.1 - Released 18th april 2010.

This class library add the ability to handle Quaternion as easily as Complex numbers.

They can be formed with real and unreal part same as Complex:
1 + 3 i - 2 j + 1 k

Quaternion can do arithmetic (non commutative ring, * is not commutative).
It can be mixed with Complex and Numbers.

Functions of Quaternions can be defined (usual serie expansion).

Releases

• 1-1.0 - Add Quaternion arithmetic as easy as Complex arithmetic
• 2-head4.2 - Head revision for Squeak4