Hi Monks,

I have a ascii file with numbers with two deciamal places (plus and minus). I want simply read the numbers and add them.

I see following problem: (I reduced the code to a minimum. the @nr holds the content of the file. )

my @nr=('32431.19', '20', '-10', '-31800');
my $x=0;
foreach (@nr)
{ $x+=$_;
  print "$_ => $x\n";
}

[download]
which results in : 
32431.19 => 32431.19
20 => 32451.19
-10 => 32441.19
-31800 => 641.189999999999

[download]

for the last sum I expect 641.19 but I get 641.189999999999 !!

What can I do to prevent this kind of rounding error ?

Many Thanks for your comments

In reply to Problems with number resolution by Anonymous Monk

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