I've been trying django-money for this reason...
On Jun 28, 2011 9:50 AM, "Cal Leeming [Simplicity Media Ltd]" <cal.leeming@simplicitymedialtd.co.uk> wrote:
> On Tue, Jun 28, 2011 at 2:47 PM, Tom Evans <tevans.uk@googlemail.com> wrote:
>
>> On Tue, Jun 28, 2011 at 2:41 PM, Cal Leeming [Simplicity Media Ltd]
>> <cal.leeming@simplicitymedialtd.co.uk> wrote:
>> > Yeah I have come up against horrible problems before when forcibly
>> > re-casting all int's to float's.. (especially when it's in the monetary
>> > sense). I had assumed that it would be a on a "per case" basis, but just
>> > wanted to make sure.
>> >
>>
>> Eeek - having said hard and fast rules are bad, I'm going to give one
>> of my own - never ever ever use floating point calculations for
>> financial/monetary calculations. Use Decimal (which is in fact backed
>> by two integers), which avoids rounding issues.
>>
>> When the auditors want to know what happened to the missing 4p* before
>> they sign off your books, you don't want to have to go through every
>> block of code retro-fitting Decimal :)
>>
>
> Lmao, I know *exactly* what you mean. I'll look at using Decimal next time!
>
>
>>
>> Cheers
>>
>> Tom
>>
>>
>> * This happened to me.
>>
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>
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-- > On Tue, Jun 28, 2011 at 2:47 PM, Tom Evans <tevans.uk@googlemail.com> wrote:
>
>> On Tue, Jun 28, 2011 at 2:41 PM, Cal Leeming [Simplicity Media Ltd]
>> <cal.leeming@simplicitymedialtd.co.uk> wrote:
>> > Yeah I have come up against horrible problems before when forcibly
>> > re-casting all int's to float's.. (especially when it's in the monetary
>> > sense). I had assumed that it would be a on a "per case" basis, but just
>> > wanted to make sure.
>> >
>>
>> Eeek - having said hard and fast rules are bad, I'm going to give one
>> of my own - never ever ever use floating point calculations for
>> financial/monetary calculations. Use Decimal (which is in fact backed
>> by two integers), which avoids rounding issues.
>>
>> When the auditors want to know what happened to the missing 4p* before
>> they sign off your books, you don't want to have to go through every
>> block of code retro-fitting Decimal :)
>>
>
> Lmao, I know *exactly* what you mean. I'll look at using Decimal next time!
>
>
>>
>> Cheers
>>
>> Tom
>>
>>
>> * This happened to me.
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Django users" group.
>> To post to this group, send email to django-users@googlegroups.com.
>> To unsubscribe from this group, send email to
>> django-users+unsubscribe@googlegroups.com.
>> For more options, visit this group at
>> http://groups.google.com/group/django-users?hl=en.
>>
>>
>
> --
> You received this message because you are subscribed to the Google Groups "Django users" group.
> To post to this group, send email to django-users@googlegroups.com.
> To unsubscribe from this group, send email to django-users+unsubscribe@googlegroups.com.
> For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
>
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