I found mention of trunc_decimal in another posting, did some looking...

In the Order model, force_recalculate_total() sets total as Decimal based 
on the various parts (sub_total, shipping, tax) but does not truncate it.

_balance() does trunc_decimal()... that seems to be the difference.

Bug?


On Friday, October 5, 2012 12:18:41 PM UTC-5, Darren Hollenbeck wrote:
>
> I'm seeing the same thing: a one-cent difference in order.total and 
> order.balance... which, on the confirmation page in checkout process, ends 
> up saying their card will be charged for $0.01 more than the order total 
> due to this rounding difference.
>
> Anyone have knowledge if this is intended behavior?
>
>
> On Thursday, August 2, 2012 2:28:51 AM UTC-5, Olivier Lauret wrote:
>>
>> Hi all,
>>
>> I have the following problem:
>>
>> order.sub_total = £4.16
>> TAX = 0.83
>> order.shopping_cost = £2.75
>> order.total = £7.74
>> But:
>> order.balance = £7.75
>>
>> The problem comes from the utils.numbers.trunc_decimal function which 
>> rounds up the order.total of 7.742.
>>
>> Is this a normal behaviour for the balance or am I missing one setting 
>> somewhere?
>>
>> Regards,
>> Olivier
>>
>

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