Do you ever want to evaluate mathematical expressions in your application? Active Calculator, the heavy-duty number crunching component, is what you want. It provides fast and flexible expression evaluation functions as an ActiveX component. You can easily integrate it into the application written in languages that support ActiveX Component such as Visual C++, Visual Basic, Delphi, C++ Builder, .Net languages like C#, VB.Net, Java, Scripts like Perl, Php, Python.

Features:

Support all common mathematical expressions
Support arithmetic, logic and bitwise operations
Report syntax error in expressions
Support common control flow in programming languages like for, while, if etc.
Return value is numeric value or string
Allow custom variables and functions
Have many built-in functions
Support long integers
Comes with documentation full of examples, as well as ready-to-compile/run sample programs