Modernize more
Apply clang-tidy Google and modernize fixes without trailing return type
using:
$ clang-tidy -p <build-dir> \
-checks='-*,google-*,modernize-*,-modernize-use-trailing-return-type' {} -fix
Change-Id: I7450cc58ea9abf928f73a467e87876083217fa26
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.