Your problem isn't in Perl, but in how numbers are represented.

There's an old rule in numerical analysis:

Never subtract very close values from each other
The problem, in very basic terms, is that your variables are the value you want, plus or minus some small "epsilon". If you subtract two very close values, all you end up with is ε1 ± ε2; in other words, garbage.

Your best bet is to restructure the formulas so the subtraction isn't necessary.

Do not rebuke them with harsh words ... but rather lead them gently - with URLs - so that they may learn wisdom.

In reply to Re: numeric values acting funny by VSarkiss
in thread numeric values acting funny by jdts

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