This adds new rounding macros to round to closest integer along with
enabling KUnit tests for all math.h macros.  It also updates kernel-doc to
render math.h related documentation and lastly updates the imagination jpeg
encoder to use the newly introduced rounding macros to find nearest value.

Also to note that math.h is orphaned and so these changes need
to be pulled by subsystem using them as discussed in below threads:

Link:
https://lore.kernel.org/all/1db64af7-3688-4bcc-a671-9440d8f02d1a@xs4all.nl/
https://lore.kernel.org/all/ZmHDWeuezCEgj20m@smile.fi.intel.com/

Changelog:
V2:
- Fix grammar in new rounding off macro descriptions
- Use roundup for rounclosest to avoid overflow

Previous patch series:
https://lore.kernel.org/all/20240708155943.2314427-1-devarsht@ti.com/#t

Rangediff (V2->V1):
https://gist.github.com/devarsht/a3c4420869d3f66fdc88e0af6a0f0a95

Daniel Latypov (1):
  lib: Add basic KUnit test for lib/math

Devarsh Thakkar (5):
  math.h: Add macros for rounding to the closest value
  math.h: Use kernel-doc syntax for division macros
  Documentation: core-api: Add math.h macros and functions
  lib: math_kunit: Add tests for new macros related to rounding to
    nearest value
  media: imagination: Round to closest multiple for cropping region

 Documentation/core-api/kernel-api.rst         |   6 +
 .../platform/imagination/e5010-jpeg-enc.c     |   8 +-
 include/linux/math.h                          |  86 ++++-
 lib/math/Kconfig                              |  14 +
 lib/math/Makefile                             |   1 +
 lib/math/math_kunit.c                         | 329 ++++++++++++++++++
 6 files changed, 434 insertions(+), 10 deletions(-)
 create mode 100644 lib/math/math_kunit.c

-- 
2.39.1