Is there a string math evaluator in .NET?

Question

If I have a string with a valid math expression such as:

String s = \"1 + 2 * 7\";

Is there a built in library/function in .NET that will p

Answer 1

Recently I was using mXparser, which is a math parser library for .NET and JAVA. mXparser supports basic formulas as well as very fancy / complicated ones (including variables, functions, operators, iteration and recursion).

https://mxparser.codeplex.com/

https://mathparser.org/

A few usage examples:

Example 1:

Expression e = new Expression("1+2*7 + (sin(10) - 2)/3");
double v = e.calculate();

Example 2:

Argument x = new Argument("x = 5");
Expression e = new Expression("2*x+3", x);
double v = e.calculate();

Example 3:

Function f = new Function("f(x,y) = sin(x) / cos(y)");
Expression e = new Expression("f(pi, 2*pi) - 2", f);
double v = e.calculate();

Found recently - in case you would like to try the syntax (and see the advanced use case) you can download the Scalar Calculator app that is powered by mXparser.

Best regards