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Data type representing 'Money'
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Date: -- (:)
From: Florent.Ouchet@i...
Subject: Re: [Caml-list] Data type representing 'Money'
Hi,

Fixed point computing is okay, but the financial world used to play  
with 5 fractional digits.

Florent

"Edgar Friendly" <thelema314@gmail.com> a écrit :
> Conglun Yao wrote:
>> Hi all,
>>
>> Is there any data type could be used to represent 'Money'  in OCaml,
>> similar to BigDecimal.
>> I see a lot of programs using float directly. Maybe Num would be better,
>> but less document could be found, for example, how to represent 20.27
>>
>> Or there already exist a better solution. Thanks for any help.
>>
>> Conglun
>>
>>
> I'd do fixed point math using Num to count cents (or mills if you really
> need) but displaying dollars and cents.  For example: $20.27 would
> internally be represented by the number 2027, and use int arithmetic for
> exact math.
>
> If you used 63-bit ints, you'd probably get away with not even using
> Num, as max_int = 4611686018427387903 would represent the dollar amount
> 46_116_860_184_273_879.03, just short of 50 quadrillion dollars.
>
> E
>
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