LOG in SAS

[csetzkorn]

Hi all,

Is the LOG function used in a datastep the log base 10 or the natural log. Tyring to find a definite answer.Thanks!

Christian

[Kurt_Bremser · Accepted solution]

Maxim 1: Read the documentation:

http://support.sas.com/documentation/cdl/en/lefunctionsref/69762/HTML/default/viewer.htm#p0urbseuxrk...

(found with google search for "SAS 9.4 functions and call routines")

[WarrenKuhfeld]

Certainly Kurt's reply to look at the documentation is a good one.  Putting in known constants that give known results is an alternative way or at least a way that might help you remember in the future.  log(e) = 1, e ** 1 = e, etc.

data;
x = log(constant('e'));
put x;
x = log10(10);
put x;
x = exp(log(constant('e')));
put x;
run;