Cris Luengo 627da3f135 Making a copy when casting a numpy array with negative strides to Eigen. ... `EigenConformable::stride_compatible` returns false if the strides are negative. In this case, do not use `EigenConformable::stride`, as it is {0,0}. We cannot write negative strides in this element, as Eigen will throw an assertion if we do. The `type_caster` specialization for regular, dense Eigen matrices now does a second `array_t::ensure` to copy data in case of negative strides. I'm not sure that this is the best way to implement this. I have added "TODO" tags linking these changes to Eigen bug #747, which, when fixed, will allow Eigen to accept negative strides.		2017-05-08 01:50:21 +02:00
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pybind11	Making a copy when casting a numpy array with negative strides to Eigen.	2017-05-08 01:50:21 +02:00