* Added overloaded etl::floor() and etl::ceil()
Added tests for float, double, long double
* Documented functions from math.h
* Added more math wrappers.
Move wrappers to clib namespace
* Cleanup of duplicated code.
* clang-format
* Code review updates
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Co-authored-by: John Wellbelove <john.wellbelove@etlcpp.com>