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Re: [xsl] Saxon Div Issue


Subject: Re: [xsl] Saxon Div Issue
From: "Mailing Lists Mail daktapaal@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 19 Jan 2015 16:06:11 -0000

>I wouldn't know if it will be a double that I will be a decimal.
Ignore the above inebriated statement.. All I meant was, I wouldnt
know if it will be a decimal.


On Mon, Jan 19, 2015 at 11:03 AM, Mailing Lists Mail
daktapaal@xxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> THe problem is , I dont know what will come in the $num. It is an
> xpath. It comes from an XML element.
>
> SO sometimes, the element contains 988, and sometimes it contains 98.8
> .. so my pseudo code actually is :"
>
> $num = /xpath/num
> var result = $num div 100
>
> I wouldn't know if it will be a double that I will be a decimal.
>
> Dak
>
>
> On Mon, Jan 19, 2015 at 10:57 AM, G. Ken Holman g.ken.holman@xxxxxxxxx
> <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>> At 2015-01-19 15:46 +0000, Mailing Lists Mail daktapaal@xxxxxxxxx wrote:
>>>
>>> I have a value 9.88 , I use the div  to do an operation
>>>
>>> Pseudo code:
>>>
>>> var num = 9.88
>>> var result = $num div 100
>>>
>>> I expect 0.0988 .. I get 0.09880000000000001
>>>
>>> I am using Saxon-EE-9.5.1-5.jar
>>>
>>> What is happening?
>>
>>
>> What is happening is that doing the arithmetic with the binary
>> representations of 9.88 and 100 create a result in binary that when
>> precisely converted to decimal give you the result you see.
>>
>> As Martin suggests, if you are using XSLT 2 then you can use decimal
>> representations of your values and do arithmetic with those.
>>
>> I hope this helps understand the issue.
>>
>> . . . . . . Ken
>>
>> --
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>>
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