Used SimplexCalc for Windows?
Developer’s Description
Features include: Ease of use; Scientific calculations and unlimited expression length; Unlimited customizable variables; Parenthesis compatible and unlimited nesting for expression; Upper case and lower case can be freely used in expression; An impressive number of built-in formulas; High precision calculation -up to 24 decimals for scientific calculations; Comprehensive documentation. Calculation range: maximal positive number: 1.797E+308;- minimal positive number: 2.225E-308; Your can do standard manipulation with "Expression" edit box such as cut, copy and paste operations.
Used SimplexCalc for Windows?