FAQ 4.1 Why am I getting long decimals (eg, 19.9499999999999) instead of the numbers I sho...

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This message is one of several periodic postings to comp.lang.perl.misc
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4.1: Why am I getting long decimals (eg, 19.9499999999999) instead of the
numbers I should be getting (eg, 19.95)?

    Internally, your computer represents floating-point numbers in binary.
    Digital (as in powers of two) computers cannot store all numbers
    exactly. Some real numbers lose precision in the process. This is a
    problem with how computers store numbers and affects all computer
    languages, not just Perl.

    perlnumber show the gory details of number representations and

    To limit the number of decimal places in your numbers, you can use the
    printf or sprintf function. See the "Floating Point Arithmetic" for more

            printf "%.2f", 10/3;

            my $number = sprintf "%.2f", 10/3;


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