The cpc_event_accum() function adds the ce_pic fields of event into the corresponding fields of accum. The ce_hrt field of accum is set to the later of the times in event and accum.

The function adds the contents of the ce_tick field of event into the corresponding field of accum.

The function adds the contents of the ce_tsc field of event into the corresponding field of accum.

The cpc_event_diff() function places the difference between the ce_pic fields of after and before and places them in the corresponding field of diff. The ce_hrt field of diff is set to the ce_hrt field of after.

Additionally, the function computes the difference between the ce_tick fields of after and before, and places it in the corresponding field of diff.

Additionally, the function computes the difference between the ce_tsc fields of after and before, and places it in the corresponding field of diff.