CPU_TIME (TIME)

Obtain processor time 

DATE_AND_TIME ([DATE, TIME,

ZONE, VALUES])

Obtain date and time 

MVBITS (FROM, FROMPOS,

LEN, TO, TOPOS)

Copies bits from one integer to another 

RANDOM_NUMBER (HARVEST)

Returns pseudorandom number 

RANDOM_SEED ([SIZE, PUT, GET])

Initializes or restarts the pseudorandom number generator 

SYSTEM_CLOCK ([COUNT,

COUNT_RATE, COUNT_MAX])

Obtain data from the system clock