From 507f5ebe46c847c7f72d49ec74ee18b8608b9c63 Mon Sep 17 00:00:00 2001
From: Joel Verhagen <joel.verhagen@gmail.com>
Date: Wed, 3 Jan 2024 11:40:16 -0500
Subject: [PATCH] Add modf implementation in classic

---
 CSharp.lua/CoreSystem.Lua/CoreSystem/Core.lua | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CSharp.lua/CoreSystem.Lua/CoreSystem/Core.lua b/CSharp.lua/CoreSystem.Lua/CoreSystem/Core.lua
index 6020edd7..33ef83cf 100644
--- a/CSharp.lua/CoreSystem.Lua/CoreSystem/Core.lua
+++ b/CSharp.lua/CoreSystem.Lua/CoreSystem/Core.lua
@@ -743,6 +743,14 @@ else
     return v
   end
 
+  function System.modf(x, y)
+    local v = x % y
+    if v ~= 0 and x * y < 0 then
+      return v - y
+    end
+    return v
+  end
+
   local function toUInt(v, max, mask, checked)
     if v >= 0 and v <= max then
       return v