Antonio Sanchez 655c3a4042 Add specialization for compile-time zero-sized dense assignment.
In the current `dense_assignment_loop` implementations, if the
destination's inner or outer size is zero at compile time and if the kernel
involves a product, we currently get a compile error (#2080).  This is
triggered by attempting to multiply a non-existent row by a column (or
vice-versa).

To address this, we add a specialization for zero-sized assignments
(`AllAtOnceTraversal`) which evaluates to a no-op. We also add a static
check to ensure the size is in-fact zero. This now seems to be the only
existing use of `AllAtOnceTraversal`.

Fixes #2080.
2020-12-07 08:38:43 -08:00
2020-09-22 00:26:23 +00:00
2020-11-26 10:22:46 +00:00
2018-03-11 10:01:44 -04:00
2020-11-30 10:53:29 +00:00
2020-12-04 21:45:09 +00:00
2020-12-04 13:42:18 -08:00
2012-07-15 10:20:59 -04:00

Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.

For more information go to http://eigen.tuxfamily.org/.

For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.

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