Screamer is an extension of Common Lisp that adds support for nondeterministic programming. Screamer consists of two levels. The basic nondeterministic level adds support for backtracking and undoable side effects. On top of this nondeterministic substrate, Screamer provides a comprehensive constraint programming language in which one can formulate and solve mixed systems of numeric and symbolic constraints. Together, these two levels augment Common Lisp with practically all of the functionality of both Prolog and constraint logic programming languages such as CHiP and CLP(R). Furthermore, Screamer is fully integrated with Common Lisp. Screamer programs can coexist and interoperate with other extensions to Common Lisp such as CLOS, CLIM and Iterate.
|Version||3.20 - Wednesday, 04 January 2006|
|Source code repository|
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There seems to be a newer source in git source control, available at: http://repo.or.cz/w/screamer.git
Submitted by bobbysmith007 10/12/2008 15:46:17
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Mr. Siskind kindly has given permission to distribute it under MIT license.
My current repository is at Github (http://github.com/nikodemus/screamer). Differences to 3.20 are so far limited to cleanups (support for Symbolics, AKCL, etc. has been stripped) and light modifications to make it run in an ANSI Common Lisp, plus some documentation strings copied over from screamer.ps.
Submitted by nikodemus 2940 days 4 hours 20 min ago
Trouble updating information
A better "homepage" the copy of Screamer I maintain is http://nikodemus.github.com/screamer/ but I can't seem to update this page.
SBCL should also be added to "Compatible Implementations", as it is the one I use to work on Screamer -- or the list should just be empty and have only "Generic ANSI Common Lisp".
Submitted by nikodemus 2902 days 7 hours 7 min ago