topic what does x4 do? in SAS Programming

what does x4 do?

SASPhile — Thu, 04 Oct 2012 21:39:45 GMT

data ek;

x1=5;

x2=6;

x3=7;

x4=(x1|x2|x3);

run;

x4=1 in output

joehinson — Thu, 04 Oct 2012 22:21:44 GMT

x4=(x1|x2|x3 ) is the same as x4=(x1 OR x2 OR x3)

which is TRUE and therefore 1 (because it is an assignment statement and will always be true).

Furthermore, any number OR'ed with another number would give 1, except (0 OR 0) which would give 0.

So, (34 OR 987765)=1

Reeza — Thu, 04 Oct 2012 22:31:00 GMT

It won't always be true, what if all are 0?

In SAS false is 0 and anything else is true.

data ek;

x1=0;

x2=0;

x3=0;

x4=(x1|x2|x3);

put x4;

run;

Astounding — Thu, 04 Oct 2012 22:34:17 GMT

Also, don't forget missing values are also false.

x1=.;

x2=.A;

x3=.Z;

x4=(x1|x2|x3);

x4 will be 0.