Per Cederberg wrote:
> Christoph Zwerschke wrote:
>> The roundToFixed should be also much simpler:
>>
>> function roundToFixed(aNumber, precision) {
>> var res = aNumber.toFixed(precision);
>> if (res.charAt(0) == ".") {
>> res = "0" + res;
>> }
>> return res;
>> };
>
> Yes, in theory this is correct. But Safari 3.1 (on Mac) still
> truncates instead of rounds, hence the following:
>
> 0.15.toFixed(1) ==> "0.1"
>
> So we still need roundToFixed() and truncToFixed() to provided
> consistent behavior across browsers, unfortunately.
The problem here is that 0.15 is a number that cannot be represented
exactly in the binary system. In this case, Firefox 2 and 3 and Opera 9
round down to 0.1 as well. In fact, I would have assumed all browsers
do, but I just noticed that MSIE 7 indeed rounds 0.15 up to 0.2 :-(
-- Christoph
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