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Mathematical rounding
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De
31/01/2005 13:23:46
 
 
À
31/01/2005 13:20:49
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00982326
Message ID:
00982351
Vues:
44
Isn't that how they learn to round the amounts at McDonalds? :-)

>>>Hi to all,
>>>
>>>Here is the controversy:
12.345   -> 12.3
>>>         -> 12.4
In my opinion, the first one (12.3) is the correct 'mathematical rounding' (to 1 decimal here). However, some colleagues say the second one is correct.
>>>
>>>Please, tell me that I'm correct! ;)
>>
>>
>>sorry, but you are incorrect.
>>
>>roundiung starts at the very end. therefore, the 5 gets rounded up, changing the 4 into a five.
>>
>>since the 4 is a 5 now, this one gets rounded up making out of the 3 a 4.
>>
>>so you end up with 12.4
>>
>>if you limit the round() function to how many decimals it is supposed to look at the result will change.
>>
>>?round(12.345, 1) = 12.3 because the function ignores the 5
>
>Amazing how one learns every day ;-)
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