NumX

NumX is a programmable 32 bit ActiveX calculator control for Windows. It has more than 50 built-in mathematical functions and supports decimal, hexadecimal and binary number formats. Advanced functions like integration, root finding and extremum finding are also included. NumX supports any number of user-defined variables and user-defined functions. A programming interface lets you add functions written in VC++, VB etc. Dual interfaces and compiled code make NumX an extremely fast control.