Implicit conversion to a generic vector type

[Marc Glisse]

On Thu, 26 May 2016, martin krastev wrote:

> Thank you for the reply. So it's a known g++ issue with a candidate
> patch. Looking at the patch, I was wondering, what precludes the
> generic vector types form being proper arithmetic types?

In some cases vectors act like arithmetic types (operator+, etc), and in 
others they don't (conversions in general). We have scalarish_type_p for 
things that are scalars or vectors, we could add arithmeticish_type_p ;-)

(I think the name arithmetic comes directly from the standard, so we don't 
want to change its meaning)

-- 
Marc Glisse