19   Frequency = Prob.scale(Frequency);  in operator *=()
24   BlockFrequency Freq(Frequency);  in operator *()
30   Frequency = Prob.scaleByInverse(Frequency);  in operator /=()
35   BlockFrequency Freq(Frequency);  in operator /()
41   uint64_t Before = Freq.Frequency;  in operator +=()
42   Frequency += Freq.Frequency;  in operator +=()
45   if (Frequency < Before)  in operator +=()
46     Frequency = UINT64_MAX;  in operator +=()
52   BlockFrequency NewFreq(Frequency);  in operator +()
59   if (Frequency <= Freq.Frequency)  in operator -=()
60     Frequency = 0;  in operator -=()
62     Frequency -= Freq.Frequency;  in operator -=()
67   BlockFrequency NewFreq(Frequency);  in operator -()
74   assert(Frequency != 0);  in operator >>=()
77   Frequency >>= count;  in operator >>=()
80   Frequency |= Frequency == 0;  in operator >>=()