test if a type can be vectorized

[Kay F. Jahnke]

Dear group!

I'd like to perform a test on some type T which tells me whether Vc can 
form a Vc::Vector from it. I'd like something like

is_simdizable<T>::value

to yield true if Vc::Vector<T> can be formed, false otherwise, so that I 
can use the result to dispatch to fall-back code if there is no 
Vc:Vector<T>.

Help appreciated.

With regards

Kay F. Jahnke


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