Features

Portable, C++03 compliant.
Standalone library : it has no dependancies.
Few requirements : STL, RTTI and exceptions.
User friendly : provides a Domain Specific Embedded Language.
Not a template library (compilation time and error messages improved, code easier to maintain).
Avoid the learning curve with minimal high-level API and black-box engine.
Usual, orthogonal types provided : integers, chars, booleans, tuples and lists.
Arbitrarily complex types supported, lists of arbitrary size allowed.
Arbitrarily complex expressions supported ; constraints are just boolean expressions.
Type control : the whole API is strongly typed.
Ease of extension by user-defined types, constraints and functions.
High integration with both the C++ core language and its standard library (e.g. std::containers of cp-variables are supported as well as iterating through solutions).