>  C99 has a header <fenv.h> which provides types, macros, and functions "to
>  provide access to the floating-point environment."
> 
>  Some Boost code in the Interval Library uses this header, or has to do
>  workarounds if not present. Metrowerks, GCC, and Dinkumware currently ship
>  the header, but many others don't.
> 
>  * Should we have a <boost/fenv.hpp> header? (Greg Chicares asked the same
>  question a couple of years ago but got to reply.) Is there any general
>  workaround for when a vendor supplied <fenv.h> isn't present?
> 
>  * Should there be a <boost/config.hpp> macro indicating <fenv.h>
>  availability?
> 
>  * Should we start suggesting to vendors that they supply <fenv.h>?
> 
>  Any opinions from floating point users?

Yes to all of the above IMO.

John.


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