854 rx_field (int val, int pos, int sz)  in rx_field()  argument
859   if (sz > 0)  in rx_field()
861       if (val < 0 || val >= (1 << sz))  in rx_field()
862 	as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz);  in rx_field()
866       sz = - sz;  in rx_field()
867       if (val < -(1 << (sz - 1)) || val >= (1 << (sz - 1)))  in rx_field()
868 	as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz);  in rx_field()
875   while (bitp + sz > 8)  in rx_field()
880       svalm = val >> (sz - ssz);  in rx_field()
887       sz -= ssz;  in rx_field()
890   valm = val & ((1 << sz) - 1);  in rx_field()
891   valm = valm << (8 - bitp - sz);  in rx_field()