Rework MSVC warning suppression

Previously, MSVC warning C4996 was suppressed unconditionally in the
entire code base which made it difficult identifying and fixing specific
problems, particularly those in the public interface.

Prefer now to disable warnings at the specific location they occur. This
approach, however, reveals an inconsistency in how Ceres handles POSIX
functions which are declared deprecated by MSVC. Specifically, Bessel
functions use the underscore form whereas the read function does not. To
simplify the logic, we revert to POSIX compatible functions.

C++23 also deprecates std::numeric_limits<T>::has_denorm which MSVC
warns about. Here, we disable the deprecation warning locally to avoid
the warning leaking into the user code.

Fixes #1013

Change-Id: Ida8457cc8dd8770b4384a7c49d16f213b02cdec4
5 files changed
tree: 83200fb9a4306afcd35fc9ff0a768c4f7d07085c
  1. .github/
  2. bazel/
  3. cmake/
  4. config/
  5. data/
  6. docs/
  7. examples/
  8. include/
  9. internal/
  10. scripts/
  11. .clang-format
  12. .gitignore
  13. BUILD
  14. CITATION.cff
  15. CMakeLists.txt
  18. package.xml

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Ceres Solver

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.

  1. Non-linear Least Squares problems with bounds constraints.
  2. General unconstrained optimization problems.

Please see for more information.