[Insight-developers] vnl updates

[Tom Vercauteren]

Hi Luis,

> The common practice is to update VNL about every two years.
>
> The following weeks could be a good time for engaging in that update,
> in which case a new version could be available with ITK 3.12.
>
> We are checking the time availability of our VNL gurus...  :-)

Thanks for taking care of it!


> Updating a single .h file is usually a bad idea, since it tends to
> pull in other files, that in turn pull other files, and soon you
> have to update the entire package...

This of course makes sense.


> For a shorter fix, we could include very specific sets of lines
> from the new version of vnl_math.h.
>
> Would it be enough if (in the meantime) we add only the fast
> rounding functions  ?

In the meantime, this could be enough. The only thing that will be
missing are some optional sse2 optimizations. They require some cmake
magic which will not happen if only vnl_math.h is updated in ITK.

Best,
Tom




> ----------------------
> Tom Vercauteren wrote:
>>
>> Hi all,
>>
>> I am wondering what the policy is for updating vnl within ITK.
>>
>> vnl_math.h now includes some fast rounding functions. I'd like to use
>> them to fix these bugs
>> http://www.itk.org/Bug/view.php?id=2078
>> http://www.itk.org/Bug/view.php?id=5692
>>
>> Unfortunately the vnl_math_floor function is not yet available in the
>> vnl_math.h file present in ITK. Can any core ITK developers trigger
>> the update?
>>
>> Thanks,
>> Tom
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>