29   static constexpr uint64_t low(uint64_t v) { return v & MASK32; }  in low()  function
73       uint64_t res_lo = low(val[i]) + low(x.val[i]) + carry;  in add()
75       res_lo = low(res_lo);  in add()
79       res_hi = low(res_hi);  in add()
104     uint64_t x_lo = low(x);  in mul()
110       uint64_t l = low(val[i]);  in mul()
115       uint64_t res_lo = low(p1) + carry;  in mul()
117       uint64_t res_hi = high(p1) + low(p2) + carry;  in mul()
120       res_lo = low(res_lo);  in mul()
121       res_hi = low(res_hi);  in mul()
130       uint64_t l = low(val[i]);  in mul()
135       uint64_t res_lo = low(p1) + carry;  in mul()
137       uint64_t res_hi = high(p1) + low(p2) + carry;  in mul()
140       res_lo = low(res_lo);  in mul()
141       res_hi = low(res_hi);  in mul()
366   uint64_t temp_low = low(val[0]) * low(other[0]);
367   uint64_t temp_middle_1 = low(val[0]) * high(other[0]);
368   uint64_t temp_middle_2 = high(val[0]) * low(other[0]);
373   uint64_t temp_high = low(val[0]) * low(other[1]) +
375                        low(val[1]) * low(other[0]);
378       low(val[0]) * high(other[1]) + high(val[0]) * low(other[1]) +
379       low(val[1]) * high(other[0]) + high(val[1]) * low(other[0]);
384       high(temp_low) + low(temp_middle_1) + low(temp_middle_2);
386   uint64_t new_low = low(temp_low) + (low(temp_low_middle) << 32);
389                       (low(temp_high_overflow) << 32);