16 #define _BASE3_IMPL_1(arg0, arg1, arg2, arg3, arg4, arg5) arg0  argument
17 #define _BASE3_IMPL_2(arg0, arg1, arg2, arg3, arg4, arg5) \  argument
18 	(arg1 + (3 * _BASE3_IMPL_1(arg0, arg1, arg2, arg3, arg4, arg5)))
19 #define _BASE3_IMPL_3(arg0, arg1, arg2, arg3, arg4, arg5) \  argument
20 	(arg2 + (3 * _BASE3_IMPL_2(arg0, arg1, arg2, arg3, arg4, arg5)))
21 #define _BASE3_IMPL_4(arg0, arg1, arg2, arg3, arg4, arg5) \  argument
22 	(arg3 + (3 * _BASE3_IMPL_3(arg0, arg1, arg2, arg3, arg4, arg5)))
23 #define _BASE3_IMPL_5(arg0, arg1, arg2, arg3, arg4, arg5) \  argument
24 	(arg4 + (3 * _BASE3_IMPL_4(arg0, arg1, arg2, arg3, arg4, arg5)))
25 #define _BASE3_IMPL_6(arg0, arg1, arg2, arg3, arg4, arg5) \  argument
26 	(arg5 + (3 * _BASE3_IMPL_5(arg0, arg1, arg2, arg3, arg4, arg5)))
27 #define _BASE3_IMPL(arg0, arg1, arg2, arg3, arg4, arg5, NARGS, ...) \  argument
28 	_BASE3_IMPL##NARGS(arg0, arg1, arg2, arg3, arg4, arg5)