From 3bc7961010518e153c7c7910c9711e23e307b5ca Mon Sep 17 00:00:00 2001
From: "Laetitia (O-01-67)" <68935009+O-01-67@users.noreply.github.com>
Date: Tue, 21 Feb 2023 16:52:10 -0500
Subject: [PATCH] add cyrb128 hash function

---
 mods/code_library.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/mods/code_library.js b/mods/code_library.js
index 031942ac..7553445b 100644
--- a/mods/code_library.js
+++ b/mods/code_library.js
@@ -40,6 +40,24 @@
 		return Math.floor(Math.random() * (max - min + 1)) + min
 	};
 
+	//cyrb128 idk where this comes from but it was in the same thread
+	function cyrb128(str) {
+		let h1 = 1779033703, h2 = 3144134277,
+			h3 = 1013904242, h4 = 2773480762;
+		for (let i = 0, k; i < str.length; i++) {
+			k = str.charCodeAt(i);
+			h1 = h2 ^ Math.imul(h1 ^ k, 597399067);
+			h2 = h3 ^ Math.imul(h2 ^ k, 2869860233);
+			h3 = h4 ^ Math.imul(h3 ^ k, 951274213);
+			h4 = h1 ^ Math.imul(h4 ^ k, 2716044179);
+		}
+		h1 = Math.imul(h3 ^ (h1 >>> 18), 597399067);
+		h2 = Math.imul(h4 ^ (h2 >>> 22), 2869860233);
+		h3 = Math.imul(h1 ^ (h3 >>> 17), 951274213);
+		h4 = Math.imul(h2 ^ (h4 >>> 19), 2716044179);
+		return [(h1^h2^h3^h4)>>>0, (h2^h1)>>>0, (h3^h1)>>>0, (h4^h1)>>>0];
+	}
+
 	function mulberry32(a) { //Mulberry32 implemented in JS from StackOverflow, https://gist.github.com/tommyettinger/46a874533244883189143505d203312c
 		return function() {
 		  var t = a += 0x6D2B79F5;