From d6e4dc3e7684f32c614fa26b6d66eab57e64eb86 Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Mon, 22 May 2017 15:56:07 +1000
Subject: src/lmathlib.js: math.ult needs to compare as if integers are
 unsigned

---
 src/lmathlib.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lmathlib.js b/src/lmathlib.js
index 0c3b715..b10f7bf 100644
--- a/src/lmathlib.js
+++ b/src/lmathlib.js
@@ -129,7 +129,9 @@ const math_sqrt = function(L) {
 const math_ult = function(L) {
     let a = lauxlib.luaL_checkinteger(L, 1);
     let b = lauxlib.luaL_checkinteger(L, 2);
-    lua.lua_pushboolean(L, Math.abs(a) < Math.abs(b));
+    if (a < 0) a += 4294967296;
+    if (b < 0) b += 4294967296;
+    lua.lua_pushboolean(L, a < b);
     return 1;
 };
 
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