more builtins

builtins/builtins.go

@@ -31,6 +31,16 @@ var Builtins = map[string]*object.Builtin{
 	"read":   {Name: "read", Fn: Read},
 	"write":  {Name: "write", Fn: Write},
 	"ffi":    {Name: "ffi", Fn: FFI},
+	"abs":    {Name: "abs", Fn: Abs},
+	"bin":    {Name: "bin", Fn: Bin},
+	"hex":    {Name: "hex", Fn: Hex},
+	"ord":    {Name: "ord", Fn: Ord},
+	"chr":    {Name: "chr", Fn: Chr},
+	"divmod": {Name: "divmod", Fn: Divmod},
+	"hash":   {Name: "hash", Fn: HashOf},
+	"id":     {Name: "id", Fn: IdOf},
+	"oct":    {Name: "oct", Fn: Oct},
+	"pow":    {Name: "pow", Fn: Pow},
 }
 
 // BuiltinsIndex ...