/// <summary>
/// Math Expression Evaluator
/// </summary>
/// <param name="expr"></param>
/// <param name="replacements"></param>
/// <returns></returns>
public static double Evaulate(this string expr, Dictionary<string, double> replacements)
{
MathEval engine = new MathEval(expr);
engine.AddReplacement(replacements);
return engine.Evaluate();
}
/// <summary>
/// Math Expression Evaluator
/// </summary>
/// <param name="expr"></param>
/// <returns></returns>
public static double Evaulate(this string expr)
{
MathEval engine = new MathEval(expr);
return engine.Evaluate();
}