A mathematics parsing engine for .net. It supports expression nesting, custom variables, custom functions all standard mathematical operations for integer, decimal (floating point), logic and bitwise. It addition to the custom functions and variables, these are built in: ACOS, ASIN, ATAN, ATAN2, LDEXP, SINH, COSH, TANH, LOG, LOG10, EXP, MODPOW, SQRT, POW, FLOOR, CEIL, NOT, AVG, SUM, TAN, ATAN, SIN, COS, ABS.
Get Started
$ dotnet add package NTDLS.ExpressionParserReadme
NTDLS.ExpressionParser
Expression parser for .net. Supports expression nesting, custom variables, custom functions as well as a ton of built in functions.
Be sure to check out the NuGet pacakge: https://www.nuget.org/packages/NTDLS.ExpressionParser/
Simple example:
In this example we will create an expression that uses two built in functions "Ceil" and "Sum", a custom function called "DoStuff" and one variable called "extra". You can also pass a configuration parameter to set max memory size, cache scavange rate and partition count.
var expression = new Expression("10 * ((5 + extra + DoStuff(11,55) + ( 10 + !0 )) * Ceil(SUM(11.6, 12.5, 14.7, 11.11)) + 60.5) * 10");
//Add a value for the variable called "extra".
expression.AddParameter("extra", 1000);
//Handler for the custom function:
expression.AddFunction("DoStuff", (double[] parameters) =>
{
double sum = 0;
foreach (var parameter in parameters)
{
sum += parameter;
}
return sum;
});
var result = ExpressionParser.Evaluate(expression);