It's a fast equation evaluator with parse-tree builder and user-friendly interface for parsing and evaluation a run-time defined string as a math expression.
The math expressions is represented as string in a function style
F(x1, x2,..., xn) =f(x1, x2,..., xn)
, where
F(x1, x2,..., xn) - declares number and names of the variables;
f(x1, x2,..., xn) - math expression may contain:
-variables x1, x2,..., xn and numbers,
-arithmetic operations + - * / ^,
-supporting a large set of math functions: sqrt, sin, exp, cos, tan, ln, abs, acos, asin, atan, cosh, log10, sinh, tanh, iif,
-constants e= 2.71828182845904 and pi= 3.14159265358979, and
-user defined functions and constants.
For example:
F(x, y) = 3*x^2+y^2+e/4,
F(x1, x2, y) = (x1-sin(x2))/y,
F()=5+6+pi.
Algorithm, which is used here, has been developed and implemented by Easy Math Solution and has different binary (static link library, dynamic link library and COM) implementation and programming approach (procedural and object oriented). It allows using EquTranslator in C/C++, C#, Delphi, VB and other languages and systems that can understand dll and COM.
This software is a commercial software. You will be able to download and test EquTranslator during a certain period of time, then, if it does what you need, you will have to acquire the full version from EquTranslator publisher. The EquTranslator 2.0 free trial version contains an installer and an uninstaller, and has a size of 270 Kilobytes.
For additional information and support request, please contact directly EquTranslator publisher.

EquTranslator Screenshot