<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def convert_timeval(seconds_since_epoch):
 """Convert time into C style timeval."""

    frac, whole = math.modf(seconds_since_epoch)
    microseconds = math.floor(frac * 1000000)
    seconds = math.floor(whole)
    return seconds, microseconds