bcParserCPP is a mathematical expression parser C++ library that can be used with Visual C++, Borland C++, GNU C++ and other C++ compilers on any OS. bcParseCPP C++ Math Parser Library features include: Easy to use C++ API. Comes with predefined functions. You can create custom functions/variables and get a callback to your own functions that you define in your source code. Optimization: Constant expression elimination for repeated tasks. Strings are supported in the expression. Analytic Operators: +, -, /, *, ^ Logical Operators: , =, &, |, !, , = Paranthesis: (, {, [ Functions in the form of: f(x,y,... N) List of predefined functions is available in the documentation. Royalty free distribution at affordable price. Distributed as source code. Portable across platforms. Portable across compilers.