Natural Logarithm (Arg +1)

Computes the natural logarithm of (x + 1). When x is near 0, this function is more accurate than adding 1 to x then using the Natural Logarithm function. If x is equal to –1, the result is –. If x is not complex and is less than –1, the result is NaN. The connector pane displays the default data types for this polymorphic function.

x can be a scalar number, array or cluster of numbers, array of clusters of numbers, and so on.
ln(x+1) is of the same numeric representation as x.