if (expectedOldCount != 0) {
        return false;
      } else if (newCount == 0) {
        return true;
      } else {
        // if our write lost the race, it must have lost to a nonzero value, so we can stop
        return countMap.putIfAbsent(element, new AtomicInteger(newCount)) == null;
      }
    }
    int oldValue = existingCounter.get();
    if (oldValue == expectedOldCount) {

are equal, and 0 otherwise. func (s *Scalar) Equal(t *Scalar) int { var diff fiatScalarMontgomery fiatScalarSub(&diff, &s.s, &t.s) var nonzero uint64 fiatScalarNonzero(&nonzero, (*[4]uint64)(&diff)) nonzero |= nonzero >> 32 nonzero |= nonzero >> 16 nonzero |= nonzero >> 8 nonzero |= nonzero >> 4 nonzero |= nonzero >> 2 nonzero |= nonzero >> 1 return int(^nonzero) & 1 } // nonAdjacentForm computes a width-w non-adjacent form for this scalar. // // w must be between 2 and 8, or nonAdjacentForm will...