Use benchmark version 1.6 compatible syntax. This is needed to make the dense_linear_solver_benchmark.cc compile with the currently stable versions of the benchmark library available on various linux distributions. Change-Id: I1e391d5c2d16250d213bcfa3d50f9560aad9a363
Ceres Solver is an open source C++ library for modeling and solving large, complicated optimization problems. It is a feature rich, mature and performant library which has been used in production at Google since 2010. Ceres Solver can solve two kinds of problems.
Please see ceres-solver.org for more information.