compute natural logarithm (i.e., LN) in sas

[Alexxxxxxx]

Hi,

Do you know how to compute the natural logarithm (i.e., LN) in SAS?

I tried to use 

data want;
set have ;
GDP_per_capita=LN(GDP_per_capita);
run;

but the result shows like

420  GDP_per_capita=LN(GDP_per_capita);
                    --
                    68
ERROR 68-185: The function LN is unknown, or cannot be accessed.

Could you please give me some suggestions about this ?

thanks in advance

[PeterClemmensen · Accepted solution]

The LOG Function returns the natural (base e) logarithm.