k y = A ??? ( 1 - cdf y ) ??? 0 < y ??? WX 1 - cdf y [ 1 ] where ky is the cycle period for cycle y; A is the timing deadline; cdfy is the cumulative probability distribution function for cycle y i.e. the probability the function will complete using less than y cycles (this can be derived by integrating PDF or other methods described further below); and WX is the Worst Case number of cycles taken