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
>
> _______________________________________________
> Caml-list mailing list. Subscription management:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list
> Archives: http://caml.inria.fr
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>