Re: [boost] [units] runtime performance again

From: Michael Marcin (mmarcin_at_[hidden])
Date: 2007-04-05 12:00:29

As has been mentioned earlier in this thread compile-time dimensional 
analysis is extremely useful.  However many common compilers have issues 
fully optimizing these wrappers away.  The correctness verification also 
happens on every compile and takes a measurable amount of time.  Is there a 
configuration of this library one can use that could ensure drop in 
compatability with raw floating-point types?

I'm thinking you could control dimensional analysis with a preprocessor 
switch (much like many people do for concept checking now).

What would this take?  Would disallowing all implicit and explicit 
conversions be sufficient?

Thanks,

Michael Marcin