354 B
354 B
title, tags
| title | tags |
|---|---|
| isNegativeZero | math,beginner |
Checks if the given value is equal to negative zero (-0).
Checks whether a passed value is equal to 0 and if 1 divided by the value equals -Infinity.
const isNegativeZero = val => val === 0 && 1 / val === -Infinity;
isNegativeZero(-0); // true
isNegativeZero(0); // false