Re: [ublas] [patch] improve type deduction

From: Jeffrey Brent McBeth (mcbeth_at_[hidden])
Date: 2007-08-24 07:53:10

On Fri, Aug 24, 2007 at 01:22:54PM +0200, Karl Meerbergen wrote:
> Hi,
>
> What is the advantage of boost::rational numbers compared to floating 
> numbers?

Err, if you are only working with rational numbers, then you can get exact
answers, where with floating point, you only get exact answers for
non-repeating short mantissa decimal representations.  For example .03 can
be represented as 3/100 rather than .02999.. (doesn't go on forever, but I
don't remember the cut off for fp right now)

Jeff

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