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Sometimes binary representation of a decimal number cannot be done
using the number of bits available in a float datatype (usually it is an
infinite series of bits)

The solution might be using a class that uses decimal representation instead
like java.math.BigDecimal.

These classes use decimal representation inside and better in making the
sort of calculations that precision is important.
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Hakan UNLU
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Alexander Stanev <a_stanev@iname.com> wrote in message
news:7m25jr$heu6@forums.borland.com...
> What is wrong with Java mathematics?
> I wrote:
> double x = 1.255;
> double y = 0;
> y = x + 0.005;
> As a rezult I receive y = 1.2599999999999998.
> Why?
> When I use float everything is allwrite, but compiler enforce me to cast
to
> float allmost everything.
> Thank You in advance and excuse me for my english.
> Alex.
>
>