public void addLast(int e) {
        mElements[mTail] = e;
        mTail = (mTail + 1) & mCapacityBitmask;
        if (mTail == mHead) {
            doubleCapacity();
        }
    }
Add an integer at end of the CircularIntArray.

@param e Integer to add.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/util/collection/CircularIntArray.java