25     twords r;  in __mulddi3()  local
28     r.s.low = (a & lower_mask) * (b & lower_mask);  in __mulddi3()
29     du_int t = r.s.low >> bits_in_dword_2;  in __mulddi3()
30     r.s.low &= lower_mask;  in __mulddi3()
32     r.s.low += (t & lower_mask) << bits_in_dword_2;  in __mulddi3()
33     r.s.high = t >> bits_in_dword_2;  in __mulddi3()
34     t = r.s.low >> bits_in_dword_2;  in __mulddi3()
35     r.s.low &= lower_mask;  in __mulddi3()
37     r.s.low += (t & lower_mask) << bits_in_dword_2;  in __mulddi3()
38     r.s.high += t >> bits_in_dword_2;  in __mulddi3()
39     r.s.high += (a >> bits_in_dword_2) * (b >> bits_in_dword_2);  in __mulddi3()
40     return r.all;  in __mulddi3()
52     twords r;  in __multi3()  local
53     r.all = __mulddi3(x.s.low, y.s.low);  in __multi3()
54     r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;  in __multi3()
55     return r.all;  in __multi3()