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st: strange behavior using round function


From   Nicola Tommasi <nicola@cide.univr.it>
To   statalist@hsphsun2.harvard.edu
Subject   st: strange behavior using round function
Date   Tue, 12 Sep 2006 18:08:36 +0200

hi all,

I would appreciate if someone could help me understand why the ROUND function behaves so differently when calculating t1_y and t2_y
The result for t2_y should be 80.54
Below follows the code.

Thanks

Sincerely,

Nicola Tommasi



. matrix list mati;

mati[2,2]
       c1    c2
r1   818  1535
r2   248   371

. di "`tot1'";
1066

. di "`tot2'";
1906

. local t1_y = round(mati[1,1]/`tot1'*100, 0.01);

. local t2_y = round(mati[1,2]/`tot2'*100, 0.01);

. di "`t1_y'";
76.74

. di "`t2_y'";
80.54000000000001





______________________________________________________________
         dott. Nicola Tommasi
         Centro Interdipartimentale di Documentazione Economica (C.I.D.E)
         University of Verona
         via dell'Artigliere, 19
         37129 Verona (Italy)
         tel.: +39-045-8028048
         fax.: +39-045-8028047
_______________________________________________________________________

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