Johan Råde wrote:
How did you implement these functions? Are they wrappers around functions provided by the compiler, or do you do some bit-twidling?
The current implementation uses only basic arithmetic operations and frexp/ldexp: http://svn.boost.org/trac/boost/browser/sandbox/math_toolkit/boost/math/spec... 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.