st: problem with blabla if baz == float(#)

["Guillaume Frechette" <gurst1@hotmail.com>]

Dear Statalisters: I apologize as this is a version of a rather common 
problem and thus it might already have been dealt with on the list. Everyone 
knows that

. tab test3 if test3 == 1/3
no observations

. tab test3 if test3 == float(1/3)
no observations

. gen foo = 1/3

. tab foo

       foo |      Freq.     Percent        Cum.
------------+-----------------------------------
  .3333333 |        850      100.00      100.00
------------+-----------------------------------
     Total |        850      100.00

. tab foo if foo == 1/3
no observations

is not a problem with Stata but as to do with binary storage and the 
solution is

. tab foo if foo == float(1/3)

       foo |      Freq.     Percent        Cum.
------------+-----------------------------------
  .3333333 |        850      100.00      100.00
------------+-----------------------------------
     Total |        850      100.00

My problem is a version of this, but the use of float doesn't seem to be the 
solution. Here's an example

. gen foo = 1/3

. gen bar = 1/3

. gen baz = 1-foo-bar

. tab baz

       baz |      Freq.     Percent        Cum.
------------+-----------------------------------
  .3333333 |        850      100.00      100.00
------------+-----------------------------------
     Total |        850      100.00

. tab baz if baz == float(1/3)
no observations

Can someone tell me how to get Stata to know to recognize baz as equal to 
1/3?

Thanks in advance,

g



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