Logarithm

Transcendental functions logarithm

syntax

• log(a)

definition

log(a) is defined as ln(a) or ^elog a (natural logarithm).

log(a) results in null values for negative or zero values of data item a.

applies to

• data item with float32 or float64 value type

example

attribute<float32> lnA (ADomain) := log(A);

A	lnA
1	0
2	0.69
3.5	1.25
5	1.61
10	2.30

ADomain, nr of rows = 5