1 files changed, 33 insertions, 0 deletions
diff --git a/util/bit53.lua b/util/bit53.lua
new file mode 100644
index 00000000..b5c473a3
--- /dev/null
+++ b/util/bit53.lua
@@ -0,0 +1,33 @@
+-- Only the operators needed by net.websocket.frames are provided at this point
+return {
+	band   = function (a, b, ...)
+		local ret = a & b;
+		if ... then
+			for i = 1, select("#", ...) do
+				ret = ret & (select(i, ...));
+			end
+		end
+		return ret;
+	end;
+	bor    = function (a, b, ...)
+		local ret = a | b;
+		if ... then
+			for i = 1, select("#", ...) do
+				ret = ret | (select(i, ...));
+			end
+		end
+		return ret;
+	end;
+	bxor   = function (a, b, ...)
+		local ret = a ~ b;
+		if ... then
+			for i = 1, select("#", ...) do
+				ret = ret ~ (select(i, ...));
+			end
+		end
+		return ret;
+	end;
+	rshift = function (a, n) return a >> n end;
+	lshift = function (a, n) return a << n end;
+};
+