Fix GH-12143: Optimize round

Fixed an error in the result due to "pre-rounding" of the round function.

"Pre-rounding" has been abolished and the method of comparing numbers has

Fix GH-12143: Optimize round

Fixed an error in the result due to "pre-rounding" of the round function.

"Pre-rounding" has been abolished and the method of comparing numbers has
been changed.

Closes GH-12268.

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