Re: [boost] Optimized portable isnan, isfinite, fpclassify etc

From: Johan Råde (rade_at_[hidden])
Date: 2006-10-11 05:20:54

John Maddock wrote:
> Johan Råde wrote:
>>> Here is a new version, with a pinch of paranoia added.
>>> There are no floating point comparisons at all,
>>> except for a few == 0 and != 0.
>>> Therefore I expect it to be immune against optimizing compilers.
>>>
>>> (I have added a cpp file to avoid ODR violations.
>>> It may eventually be possible to remove the cpp file,
>>> if we can turn the constants into compile time constants.
>>> I bit of ifdef logic will be needed for that.)
>>>
>>> (This version does not undefine any macros either.)
> 
> It works for Intel/Win32, I haven't been able to build it on either HP or 
> with Intel/Linux due to endless compiler errors inside the system's math.h.
> 
> I haven't had a chance yet to see what might be wrong.
> 
> John. 
> 
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Here it is.

--Johan