The code assumed that the rounding of a floating point value, and the
rounding of the sum of that value and an integer, would always snap in
the same direction. But because of accuracy limits (independently
of the rounding function employed), that is not always the case for
fractions very near to .5.
Fixes: QTBUG-122451
Pick-to: 6.7 6.6 6.5 6.2 5.15
Change-Id: I0825d42e6be7f6e3397760a5e9be5dddca42dcdc
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
a43d86fe1c