UINT128
typeinfo("__int128_t", INT128, UINT128, 128, 7, 's'),
typeinfo("__uint128_t", INT128, UINT128, 128, 7, 'u'),
$2.bit_width == 128 ? (t == INT ? INT128 : UINT128) :
: t == INT128 ? UINT128
kwdef_type( "__uint128_t", UINT128, 99),
UINT128, INT128,
|| ot == INT128 || ot == UINT128
return s == 'u' ? UINT128 : INT128;
t = UINT128;