Fix signed remainder assumption

codegen-luajit/src/analyzer/operator.rs

@@ -6,9 +6,7 @@ pub fn bin_symbol_of(op: BinOpType) -> Option<&'static str> {
 		BinOpType::Sub_I64 | BinOpType::Sub_FN => "-",
 		BinOpType::Mul_I64 | BinOpType::Mul_FN => "*",
 		BinOpType::DivS_I64 | BinOpType::Div_FN => "/",
-		BinOpType::RemS_I32 | BinOpType::RemU_I32 | BinOpType::RemS_I64 | BinOpType::RemU_I64 => {
-			"%"
-		}
+		BinOpType::RemS_I64 => "%",
 		_ => return None,
 	};
 

codegen-luajit/src/translator.rs

@@ -238,7 +238,9 @@ fn write_local_operation(head: &str, tail: &str, w: &mut dyn Write) -> Result<()
 		("abs" | "ceil" | "floor" | "sqrt" | "min" | "max", _) => {
 			write!(w, "local {head}_{tail} = math.{head} ")
 		}
-
+		("rem", "i32") => {
+			write!(w, "local {head}_{tail} = math.fmod ")
+		}
 		_ => write!(w, "local {head}_{tail} = rt.{head}.{tail} "),
 	}
 }