tree 52380ebefaa03c6fc2150a9b40f4e172ad9f18a2
parent bbe790e0f3ba9e9565862067198d2760ab669ec8
author Sameer Agarwal <sameeragarwal@google.com> 1531074470 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1531203481 +0000

Relax the limitation that SchurEliminator::Eliminate requires a rhs.

When using the SchurEliminator to compute a preconditioner, there
is no rhs. This CL removes that limitation and simplifies the
call sites in the two preconditioners.

https://github.com/ceres-solver/ceres-solver/issues/271

Change-Id: I05b8518fdc9f0d1a6d88ae76d3a7e8e838e7204a