Functions and CALL Routines 
Returns the integer portion of the argument, using zero fuzzing.

argument

is a numeric constant, variable, or expression.
The following rules apply:

If the value of the argument is an exact integer,
INTZ returns that integer.

If the argument is positive and not an integer,
INTZ returns the largest integer that is less than the argument.

If the argument is negative and not an integer,
INTZ returns the smallest integer that is greater than the argument.
Unlike the INT function, the INTZ function
uses zero fuzzing. If the argument is within 1E12 of an integer, the INT
function fuzzes the result to be equal to that integer. The INTZ function
does not fuzz the result. Therefore, with the INTZ function you might get
unexpected results.
The following SAS statements produce these results.
SAS Statements 
Results 
var1=2.1;
a=intz(var1);
put a;

2

var2=2.4;
b=intz(var2);
put b;

2

var3=1+1.e11;
c=intz(var3);
put c;

1

f=intz(1.6);
put f;

1

Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.