30-seconds-of-code/javascript/snippets/approximately-equal.md

title, type, tags, cover, dateModified

title	type	tags	cover	dateModified
Approximate number equality	snippet	math	engine	2020-11-01T20:50:57+02:00

Checks if two numbers are approximately equal to each other.

• Use Math.abs() to compare the absolute difference of the two values to epsilon.
• Omit the third argument, epsilon, to use a default value of 0.001.

const approximatelyEqual = (v1, v2, epsilon = 0.001) =>
  Math.abs(v1 - v2) < epsilon;

approximatelyEqual(Math.PI / 2.0, 1.5708); // true