ladd()

ladd(<list>[, <delimiter>])
lsub(<list>[, <delimiter>])
lmul(<list>[, <delimiter>])
ldiv(<list>[, <delimiter>])
lavg(<list>[, <delimiter>])
lmax(<list>[, <delimiter>])
lmin(<list>[, <delimiter>])

These do arithmetic on a whole list of numbers at once, the way lmath() does, and never refuse an item for not being a number.

ladd() adds the numbers together.
lsub() subtracts each number after the first from the first.
lmul() multiplies the numbers together.
ldiv() divides the first number by each of the others in turn. A zero divisor is passed over instead of being an error.
lavg() returns the average of the numbers.
lmax() and lmin() return the largest and the smallest number.

ladd(), lsub(), lmul(), ldiv(), lavg(), lmax() and lmin() come from RhostMUSH and take the same arguments.

ladd items: how items count as numbers, delimiters, and an empty list
ladd examples: each function on a short list

::: seealso

Reading the items

Each item counts as the number it starts with, so 1.5x counts as 1.5 and an item that does not start with a number counts as 0. The items are separated by <delimiter>, or by spaces if it is not given or is empty. With another delimiter an empty item is kept, and counts as 0. An empty list gives 0.

Examples

> think ladd(1 2 3 4)
10
> think lsub(10 2 3 1)
4
> think lmul(2|2|2|2, |)
16
> think ldiv(20 2 0 2)
5
> think lavg(2 4 6 8 10)
6
> think lmax(1 10 2 4 6)
10
> think lmin(1 10 2 -4 6)
-4