From dbab2ec812da3e608f06ac7670a2bff958e78778 Mon Sep 17 00:00:00 2001
From: Nic <24358775+nicfv@users.noreply.github.com>
Date: Tue, 5 Mar 2024 11:36:41 -0800
Subject: [PATCH] Add rounding function (#15)

* Minor doc updates

* Add contribution guidelines in readme

* Update typedoc

* Release v1.0.1

* Add rounding function

* n cannot be infinity

* Normalize bug

* Changelog for v1.0.2

* Release v1.0.2
---
 smath/CHANGELOG.md  |  6 ++++++
 smath/package.json  |  2 +-
 smath/src/Polate.ts |  2 +-
 smath/src/SMath.ts  | 15 ++++++++++++++-
 4 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/smath/CHANGELOG.md b/smath/CHANGELOG.md
index 215d35b5..988ded9c 100644
--- a/smath/CHANGELOG.md
+++ b/smath/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 1.0.2
+
+- Add rounding function
+- `isNumber` cannot be +/- infinity
+- Fix normalization bug when `min = max`
+
 ## 1.0.1
 
 - Fix minor documentation in `SMath`
diff --git a/smath/package.json b/smath/package.json
index 9598493a..9658295b 100644
--- a/smath/package.json
+++ b/smath/package.json
@@ -1,6 +1,6 @@
 {
   "name": "smath",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Small math function library",
   "main": "dist/index.js",
   "types": "types/index.d.ts",
diff --git a/smath/src/Polate.ts b/smath/src/Polate.ts
index 5dd8750a..175b8a43 100644
--- a/smath/src/Polate.ts
+++ b/smath/src/Polate.ts
@@ -15,7 +15,7 @@ export abstract class Polate {
      */
     public static normalize(n: number, min: number, max: number): number {
         if (min === max) {
-            return min;
+            return 0;
         }
         return (n - min) / (max - min);
     }
diff --git a/smath/src/SMath.ts b/smath/src/SMath.ts
index a7d0ec95..f5b510d1 100644
--- a/smath/src/SMath.ts
+++ b/smath/src/SMath.ts
@@ -13,7 +13,7 @@ export abstract class SMath {
      * ```
      */
     public static isNumber(n: any): boolean {
-        return typeof n === 'number';
+        return typeof n === 'number' && n !== Infinity && n !== -Infinity;
     }
     /**
      * Clamp a number within a range.
@@ -51,4 +51,17 @@ export abstract class SMath {
     public static approx(a: number, b: number, epsilon: number = 1e-6): boolean {
         return a - b < epsilon && b - a < epsilon;
     }
+    /**
+     * Round a number to any number of decimal places.
+     * @param n The number to round
+     * @param d The number of places on the right side of the decimal
+     * @returns The rounded number
+     * @example
+     * ```js
+     * const pi = SMath.round(3.1416, 2); // 3.14
+     * ```
+     */
+    public static round(n: number, d: number): number {
+        return Math.round(n * 10 ** d) / (10 ** d);
+    }
 }
\ No newline at end of file