https://bugs.documentfoundation.org/show_bug.cgi?id=129606
--- Comment #24 from Mike Kaganski <mikekagan...@hotmail.com> ---
FTR: As expected, there is a downside of the change in comment 8 (see comment
20 "I can't be sure that the change would not introduce a regression for
similar cases where it used to give better results", which applies universally
to any such attempt to improve).
For the sequence 78, 78.1, ...
version 7.0 and later shows 78.4999999999999, while 6.4 had 78.5; in 6.4, the
first problematic result was 78,9999999999999.
The reason is that after commit 8f46501233c164ff91d77a7f5adf74ea16cd0165, the
number 0.099999999999994316 is rounded to 14 decimals, when previously it was
rounded to 15 decimals. So before the commit, the increment was
~0.099999999999994, and after the commit it became ~0.09999999999999, i.e. the
error has increased.
As expected, there's no silver bullet. At this time, no ideas and incentive how
to further improve this, but constructive ideas are welcome *in a new* bug
report.
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