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?
--Beman
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