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RegexMath Build Status CodeFactor

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