tree c73936334c37b7e022091c68189c2530c940aa25
parent 46b4b3b002994ddb9d6fc72268c3e271243cd1df
author Sergey Sharybin <sergey@blender.org> 1743673670 +0200
committer Sergey Sharybin <sergey@blender.org> 1743683004 +0200

Fix vector operations benchmark compilation

Some of the benchmark functions use the same name as other functions
in the ceres namespace. For example Axpby defines both benchmark but
also an utility function in eigen_vector_ops.h. It seems to confuse
some compilers and leads to a compilation error rooting deeper into
the benchmark header itself: it seems that the compiler can not
deduct which of the instances of such functions to use.

Wrapping the file into an anonymous namespace solves the problem.
Alternative could be to use benchmark namespace to make thins more
explicit, for example ceres::internal::benchmark.

Tested on the following configuration:
- macOS 15.4
- Xcode 16.3
- Apple M3 CPU
- google-benchmark 1.9.2 installed via homebrew

Change-Id: Id127015dd22de99c6c3da88e71f255736e0bed82