Eval.net

Easily evaluate simple expressions on the go...

This is a port of the BigEval.js library

Features:

• Evaluate basic math operators (5 * (4 / 3))
• Use constants (x * 27 / 4)
• Support for pre-defined function calls (30 * pow(24, 6) / cos(20))
• Support for custom function calls
• Support for logic operators (26 * 3 < 100 - returns a bool value)
• Support for bitwise operators ((1 << 2) == 4)
• Support for string values ("test" + 5 == "test5")
• Customize the type that is used for numeric values in the expression.
• Customize the code behind the execution of any of the operators.
• Support for compiling an expression and running multiple times while supplying different constants

Nuget

Install-Package Eval.net

Usage

using Eval.net;

var result1 = (double)Evaluator.Execute("12+45*10", EvalConfiguration.DoubleConfiguration);
var result2 = (double)Evaluator.Execute("30 * pow(24, 6) / cos(20)", EvalConfiguration.DoubleConfiguration);

var compiled = Evaluator.Compile("5 * n", EvalConfiguration.DoubleConfiguration.Clone());

compiled.SetConstant("n", 8);
var result3 = (double)compiled.Execute();

compiled.SetConstant("n", 9);
var result4 = (double)compiled.Execute();

Operators

The operators currently supported in order of precedence are -

[
	['!'],  // Factorial
	['**'],  // power
	['/', '*', '%'],
	['+', '-'],
	['<<', '>>'],  // bit shifts
	['<', '<=', '>', '>='],
	['==', '=', '!='],   // equality comparisons
	['&'], ['^'], ['|'],   // bitwise operations
	['&&'], ['||']   // logical operations
]

Me

• Hi! I am Daniel Cohen Gindi. Or in short- Daniel.
• danielgindi@gmail.com is my email address.
• That's all you need to know.

Help

If you want to buy me a beer, you are very welcome to Thanks :-)

License

This library is under the Apache License 2.0.

This library is free and can be used in commercial applications without royalty.