abs()
arccos()
arcsin()
arctan2()
arctan()
cos()
exp()
factorial()
haversine()
inc()
inside()
int()
intervalleftbound()
intervalnum()
intervalrightbound()
log()
max()
mean()
median()
min()
ndef()
percentile()
pi()
pow()
rand()
#recno()
round()
rounddown()
roundup()
#rowcount
sin()
smooth()
sqrt()
sum()
tan()