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title: approximatelyEqual tags: math,beginner

TS JS JS

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 parameter, epsilon, to use a default value of 0.001.

export const approximatelyEqual = (
  v1: number,
  v2: number,
  epsilon: number = 0.001
) => Math.abs(v1 - v2) < epsilon;
approximatelyEqual(Math.PI / 2.0, 1.5708); // true
approximatelyEqual(Math.PI / 2.0, 1.5708, 0.000001); // false // 1.5707963267948966