Following code is giving 0 obn anyone knows why%3F

[Rudemulgga]

data aa;
  input a b;
  c = b - a;
  if c = 6.3;
  datalines;
  2.9 9.2
;
run;

[Kurt_Bremser · Accepted solution]

Numbers are stored on computers in binary format. Most decimal fractions have no exact binary representations, which causes imprecision. Do a search for "SAS numeric precision" for the details.

When doing comparisons with decimal fractions, use the ROUND function or allow for fuzzyness.

[Rudemulgga]

Thanks Kurt!
Rounding before comparing is helpful.