Re: Change rounding mode

Thank you! I'll try it

Attila Szegedi wrote:

I see. I'm afraid FreeMarker can't easily help you with that -- we're
relying on java.text.DecimalFormat, and it doesn't have a configurable
rounding... Daniel's solution would work, though... You could even
extend it to use automatic escaping:

<#function round2 n>
<#if n?is_number><#return ((n*100)?round/100)?
string><#else><#return n></#if>
</#function>

<#escape x as round2(x)>
... rest of your template here ...
</#escape>

And it'd automatically format all numbers emitted from within the
escape block to two decimals.

Attila.

On Oct 15, 2008, at 2:28 PM, David Cuenca wrote:

I would like to change the formatting that freemarker uses to show a
Double with only two decimal positions (${x?string("0.##")}). I want
freemarker to round it with the half-up rule.

Daniel Dekany wrote:

Wednesday, October 15, 2008, 9:23:58 AM, David Cuenca wrote:

Hello,

I would like to know if there is an easy way to change freemarker's
default rounding mode. As the freemarker manual says:

"Following the financial and statistics practice, the rounding goes
according the so called half-even rule, which means rounding
towards the
nearest ``neighbor'', unless both neighbors are equidistant, in
which
case, it rounds towards the even neighbor..."

But I would like to use HALF_UP.

Out of curiosity, why?

Otherwise I don't think it's possible in FreeMarker, since it's
number
formatting is what the Java platform provides, and DecimalFormat uses
half-even rounding, and it isn't configurable in this regard. That
said, you couldn't even do that in a Java program. So, blame the J2SE
API guys... ;)

Of course, you could write the function for this easily:

<#function n3 n>
<#return ((n*1000)?round/1000)?string>
</#function>

Does anybody know if it's configurable?

Thanks!

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