40     explicit BigInteger(uint64_t u) : count_(1) {  in BigInteger()  argument
41         digits_[0] = u;  in BigInteger()
69     BigInteger& operator=(uint64_t u) {
70         digits_[0] = u;
75     BigInteger& operator+=(uint64_t u) {
77         digits_[0] += u;
92     BigInteger& operator*=(uint64_t u) {
93         if (u == 0) return *this = 0;
94         if (u == 1) return *this;
95         if (*this == 1) return *this = u;
100             digits_[i] = MulAdd64(digits_[i], u, k, &hi);
110     BigInteger& operator*=(uint32_t u) {
111         if (u == 0) return *this = 0;
112         if (u == 1) return *this;
113         if (*this == 1) return *this = u;
119             const uint64_t uc = u * c;
120             const uint64_t ud = u * d;
231         uint64_t u = ParseUint64(begin, end);  in AppendDecimal64()  local
233             *this = u;  in AppendDecimal64()
236             (MultiplyPow5(exp) <<= exp) += u;   // *this = *this * 10^exp + u  in AppendDecimal64()