RegexMath

A math engine written in C# using RegEx.

Why?

Because why not?

Examples

RegexMath.Evaluate("5+(-5(0.431e4*(5)(4)))*3.430e2(.509194e-5)-40.05245");
// -787.80921602

Regexmath.Evaluate("sqrt(5)+5^2PI+H_3/log(e, 3)");
// 82.444656232727

var input = "broken";
RegexMath.TryEvaluate(input, our var result);
// False

Features

Standard Arithmetic:

^, **, *, /, %, +, and -

Constants:

PI and E

Standard Math functions:

• sqrt(x)
• cbrt(x)
• root(x, y)
• log_x(y) or log(x, y)
• min(x, y) or max(x, y)

and a lot more...

Programming constructs:

• Modulo
• Remainder
• Bitshift

Complex calcuations:

• Factorial on non-natural numbers
• Euler Beta functions
• Error functions
• Sigmoid: Logistic functions
• Gamma functions
• Harmonic numbers
• Trigonometry

TODO:

• Summation in the form of Σ/sum/sigma[i=1, 6][3i + 4]
• Product in the form of Π/prod/product[i=1, 3][3i + 4]
• Variable substitution
• Differential equations
• Numerical stability
• Conversion between radian, degree, and grad

Some of the functions can be found in Math.Net or Typing Math as text