Yeah that's why u can't use them in 'Switch - Case' statements
"Thorpe, Kevin KJ" wrote:
> >From any programming language (with the exception perhaps of BASIC) this or
>something similar will occur. To re-write your test
> ( (0.7 - 0.6) - 0.1 ) < 1E-4 (an appropriately small number)
> should do the trick.
>
> Decimal numbers in most programming languages are represented imprecisely. Some
>languages have the facility to represent decimal numbers precisely using a special
>base 10 data type. This may be useful if you want to do calculations involving money.
>Otherwise the additional overhead (processor and memory) to do this is not normally
>warranted.
>
> kev
> > ----------
> > From: Tsao Su Jen
> > Reply To: A mailing list for discussion about Sun Microsystem's Java Servlet
>API Technology.
> > Sent: Tuesday, 22 February 2000 6:15 PM
> > To: [EMAIL PROTECTED]
> > Subject: Basic arithmetic operation in Java (0.7 - 0.6 != 0.1 ???)
> >
> > Sorry for posting this off-topic question here, but since people in this list
> > have most probably coded extensively with Java, I'm hoping somebody can provide
> > some insights. In my java program, an expression like the following evaluates
> > to false:
> > (0.7 - 0.6 == 0.1)
> >
> > The following code snipplet:
> > double a = 0.7;
> > double b = 0.6;
> > double c = a - b;
> > System.out.println("a=" + a + " b=" + b + " c=" + c);
> > gives the result:
> > a=0.7 b=0.6 c=0.09999999999999998
> >
> > Why is the result of the above operation not exact? If this is the expected
> > behaviour, what would be a good way to handle such numeric operations and
> > comparisons, e.g. when we're doing data validation?
> >
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> >
> EOM
>
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Rohitashwa R Acharya ([EMAIL PROTECTED])
Patni Computer Systems (Ltd)
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