[3.10] gh-90744: Fix erroneous doc links in the sys module (GH-101319) by hugovk · Pull Request #102322 · python/cpython

…nGH-99675)

* Change documentation for sys.float_info.rounds

Change the documentation for sys.float_info.rounds to remove
references to C99 section 5.2.4.2.2 and instead place the
available values inline.

* Correction to previous documentation change

Newlines were not preserved in generated HTML on previous
commit. I have changes the list to a comma-separated list
of values and their meanings.

* Clarify source for value of FLT_ROUNDS

Clarify the source of the FLT_ROUNDS value and
change 'floating-point addition' to 'floating-point
arithmetic' to indicate that the rounding mode
applies to all arithmetic operations.

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Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>