4.62 log2 - Log base 2

Format: log2( $num$ )

Compute logarithm of $num$ with base 2.

Example

Example 1: Basic Example

$ more dat1.csv
id,val
1,10
2,256
3,
4,0
5,1
6,-8
$ mcal c='log2(${val})' a=rsl i=dat1.csv o=rsl1.csv
#END# kgcal a=rsl c=log2(${val}) i=dat1.csv o=rsl1.csv
$ more rsl1.csv
id,val,rsl
1,10,3.321928095
2,256,8
3,,
4,0,
5,1,0
6,-8,