Re: significant figures

[Andy Augustine <aug@ix.netcom.com>]

I have a similar function up at JavaScript 411 which returns a number rather
than a string, something that is important when dealing with forms and such.  
Have a look at http://www.his.com/~smithers/freq/beta/dollars.html

On which platforms does the parseFloat() bug occur?? I know its happening on
my Win95 machine.

Anyone else?
Andy Augustine

At 10:42 AM 3/2/96 -0800, Gordon McComb wrote:
>This should take care of most of the issues involved when rounding numbers.
>
>function roundDollar (Val) {
>	Dollar = Math.floor(Val) 
>	Val = "" + Math.round(Val * 100)
>	Decimal = Val.substring (Val.length-2, Val.length)
>	return (Dollar + "." + Decimal);
>}
>
>
>At 02:46 PM 3/2/96 +0000, you wrote:
>>Hello again
>>
>>I posted this question over a week ago and have had no replies so I thought
>>I'd try again!
>>
>>Is there a way to accurately round off numbers to a given number of decimal
>>places (2!) - obviously useful for any sort of monetary display field.
>>
>>I've looked at a fair number of examples of spreadsheets, calculators etc.
>>and none of them do this!
>>
>>I've tried using code like
>>
>>              (round(100 x myNumber))/100
>>
>>- no good, not only do all the decimal places fill up again but also it's
>>not accurate! (You typically get something like 1.99999999999 instead of 2
>>etc.).
>>
>>Anyone out there got a definite answer on this one - "it can't be done"
>>would be better than nothing!
>
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