* Committing clang-format changes
* Assume C99 fixed sized ints exist, use them
* Assume H5_SIZEOF_LONG_DOUBLE != 0, `long double` has existed since C89
Note, this is only assuming that `long double` exists, no assumptions about its size have been touched. Didn't remove any code that does things like test if `long double` and `double` have different sizes.
* Committing clang-format changes
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>