diff --git a/extend.lua b/extend.lua
new file mode 100644
index 0000000..9e8de8c
--- /dev/null
+++ b/extend.lua
@@ -0,0 +1,10 @@
+
+
+function torchx.extend(types, funcs, alias)
+   for _,type in ipairs(types) do
+      local metatable = torch.getmetatable(alias and ('torch.' .. type .. 'Tensor') or type)
+      for funcname, func in pairs(funcs) do
+         rawset(metatable, funcname, func)
+      end
+   end
+end