How to deal with Decimal Number

[vbdewd]

Greetings Folks,
This is an old issue but I still wonder if there's a quick solution.

When I multiply a number such as (0.0000001 * 1000000), The answer comes up to 0.099999999999999999 instead of 0.1

Aside from using parseFloat and/or .toFixed, can you tell me of a way to get the correct result of 0.1?

Many Thanks

 

[johnwm]

In general there isn't! Google for 'floating point' to understand why.

If you want the best response to a question, please check out FAQ222-2244 first.
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[vbdewd]

thanks johnwm.

I do understand why but I was hoping somebody has found a soultion or some type of conversion.

 

[mmerlinn]

Basically it is a built-in problem due to the fact that computers cannot natively understand decimal numbers, only binary numbers. No one yet has invented a five-way hardware computational switch.

Since your problem cannot be solved with hardware, you must do your computations to a large number of significant digits, then round to a lower number of significant digits to filter out the built in errors.

mmerlinn

http://mmerlinn.com

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