How to check the equality of two decimals with an acceptable error margin

Question

I have two decimals:

var first = 1.567m;
var second = 1.568m;
var areEqual = first == second; // false

And I have an acceptable margin of error; which is 0.010.
So what I need is a Check method:

Check(first: 1.567m, second: 1.577m, margin: 0.010m); // true
Check(first: 1.567m, second: 1.578m, margin: 0.010m); // false
Check(first: 1.567m, second: 1.578m, margin: 0.011m); // true

How can I write that?

Answer 1

if (Math.Abs(first - second) <= margin)