#Calculation is an ActiveX component designed for VB/VB.NET/VC++/VJ++/VC#.NET. It is a powerful calculation engine for your applications. This component integrates expression parsing and evaluating. Generally speaking, #Calculation is very useful in two general areas: first, when a formula has to be defined and evaluated at runtime (for example, if the end user is allowed to enter a formula that will be evaluated and used); second, when a set of formulas that depend on each other are defined, configured, and evaluated at run-time. #Calculation Component supports conventional math operators and functions and is suitable for heavy-duty number crunching. It also allows defining variables and sets of related formulas that implement spreadsheet-like recalculations. Even it can support Matrix and Array operation (just like MATLAB), note-line, different number system and custom-functions in your expression. The powerful calculation ability, various functions, and the different modes of work give power and flexibility. General features of #Calculation: -Arithmetic, Logic, Bitwise, Relation operation -Matrix and Array operation -Built-In Functions -Constant support -Alias for operators and functions -Unlimited nesting for expression -Auto detect errors -"Simulate the exact value" operation -Two kinds of return value - string and numerical value -Upper case and lower case can be mixedly used in the expression -Ansi chars and some unicode chars can be used in the expression -Scientific notation for numerical value -Custom variable support -Note-line can be used in the expression you want to evaluate -Custom function can be created by the component and be used in the expression -Mixed operation for Binary, Octal, Decimal and HEXadecimal numbers -"Round Operation" according to the appointed bits -Base-N(2,8,10,16) results can be showed -Matrix and Array result support