Comparing double and float values

[Matthew Ong]

On 5/13/2011 3:12 PM, Don wrote:
> std.math.isIdentical().
> I doubt it would ever be appropriate to use this in a financial context,
> it's more for precise testing of math functions.
> Note that, for example, isIdentical(-0.0, +0.0) returns false.
Hi,

Hmm.. That is main reason that I can see that why Java provided that 
function. Thanks. I will keep that in mind.

In Java and most C/C++ does not have problem for <,>, for double/float 
type comparison. But when it comes to <=,>=,== we need to be very 
careful and need to somehow solve that with some sort of raw bits 
method. I cannot remember, there is one programming language(old one) 
does not have issue when it comes to financial data computation and also
logical comparison. To handle that I have written some API in Java, 
looks like I need to port that over also. But let me bounce that off 
other to see if there is someone that have solved this before.



-- 
Matthew Ong
email: ongbp at yahoo.com