30-seconds-of-code/snippets/approximatelyEqual.md

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Approximately number equality	math	beginner	blog_images/engine.jpg	2018-02-14T12:47:13+02:00	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