Kebab file names

snippets/is-negative-zero.md

@@ -0,0 +1,20 @@
+---
+title: Number is negative zero
+tags: math
+cover: flower-portrait-8
+firstSeen: 2018-11-12T15:45:36+02:00
+lastUpdated: 2020-10-20T23:02:01+03:00
+---
+
+Checks if the given value is equal to negative zero (`-0`).
+
+- Check whether a passed value is equal to `0` and if `1` divided by the value equals `-Infinity`.
+
+```js
+const isNegativeZero = val => val === 0 && 1 / val === -Infinity;
+```
+
+```js
+isNegativeZero(-0); // true
+isNegativeZero(0); // false
+```