Re: [eigen] On a flexible API for submatrices, slicing, indexing, masking, etc.

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Regarding the simmetry caveat, what about
where a<b, as the reverse of
Meaning that increasing or decreasing is defined by the sign of stride. The first argument is a strong (inclusive) bound and the second is a weak bound.

Also, would using stride as the first argument allow for omitting the bounds when accessing matrices and vectors?

On Jan 8, 2017 4:45 PM, "Yuanchen Zhu" <yuanchen.zhu@xxxxxxxxx> wrote:

Another remaining issue is that, as I said, all the example here and in the wiki basically assume step > 0. If increment d is dynamic and can be either positive or negative, you have to write something like 

A(sgn(a) <= sgn(d)(4 + d * anyZ) <= sgn(b))

​Sorry I meant
A(sgn(d)*a <= sgn(d)(4 + d * anyZ) <= sgn(d)*b)

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