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From: John Maddock (john_at_[hidden])
Date: 20080430 04:43:00
Johan Råde wrote:
> How did you implement these functions?
> Are they wrappers around functions provided by the compiler,
> or do you do some bittwidling?
The current implementation uses only basic arithmetic operations and
frexp/ldexp:
http://svn.boost.org/trac/boost/browser/sandbox/math_toolkit/boost/math/special_functions/next.hpp
but but there's scope to forward the implementations to native nextafter
implementations where available. So far I've only done this for msvc
doubles by way of an experiment / sanity check. There's no native or
optimised version of edit_distance  I'm assuming this will used mostly in
testing situations where out and out performance isn't so critical  which
is just as well because the logic is rather complex :(
Feel free to work your bit twiddling magic on these :)
Regards, John.
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