Re: [Boost-users] isinf & Boost

From: Johan Råde (rade_at_[hidden])
Date: 2008-01-27 09:58:51

John Maddock wrote:
> 
> Well, I'm biased :-)  But I'd characterise it like this: the version that 
> will be in Boost-1.35 uses only portable C++ code, and will forward to the 
> platforms native version if there is one.  It's also been tested on all the 
> platforms we regression test on, and the only failure I know of turned out 
> to be a bug in numeric_limits (confirmed by IBM).  On the other hand, 
> Johan's implementation peeks at the bits of the value to determine it's 
> type, which is *much* faster for native floating point types, but *maybe* 
> less portable for some platforms, and doesn't scale to user defined floating 
> point types.  Hopefully we'll end up with a combination of the best bits of 
> the two versions in the end - and Johan's code review is coming up at the 
> end of Feb if you're interested BTW.
> 
> HTH, John. 

I fully agree with John's description.

--Johan