public long prevLts()

in harry-core/src/harry/model/OpSelectors.java [385:401]

• 13 lines of code
• 6 McCabe index (conditional complexity)

        public long prevLts(long lts)
        {
            long slideCount = lts / switchAfter;
            long positionInCycle = lts - slideCount * switchAfter;
            long prevRepeat = positionInCycle / windowSize - 1;

            if (lts < windowSize ||
                prevRepeat < -1 ||
                (prevRepeat == -1 && (positionInCycle % windowSize) == (windowSize - 1)))
                return -1;

            // last cycle before window slides; next window will have shifted by one
            if (prevRepeat == -1)
                positionInCycle += 1;

            return slideCount * switchAfter - windowSize + positionInCycle;
        }