How to disable -no-prec-div option only in a few lines

How to disable -no-prec-div option only in a few lines

Title says it all. I now "#pragma optimize("", on/off)" but this controls all optimizations per function or per file. All I need is control optimization for a few lines. Any idea?

"Making a non-optimized function outside" is out of the question.

TIA.

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