-BlockFrequency &BlockFrequency::operator*=(const BranchProbability &Prob) {
- uint32_t n = Prob.getNumerator();
- uint32_t d = Prob.getDenominator();
-
- assert(n <= d && "Probability must be less or equal to 1.");
-
- // If we can overflow use 96-bit operations.
- if (n > 0 && Frequency > UINT64_MAX / n) {
- // 96-bit value represented as W[1]:W[0].
- uint64_t W[2];
-
- // Probability is less or equal to 1 which means that results must fit
- // 64-bit.
- mult96bit(Frequency, n, W);
- Frequency = div96bit(W, d);
- return *this;
- }
-
- Frequency *= n;
- Frequency /= d;
+BlockFrequency &BlockFrequency::operator/=(BranchProbability Prob) {
+ Frequency = Prob.scaleByInverse(Frequency);