Looks like cppcheck is not smart enough...
const double factor { std::pow( 10, - mPrecisionSpinBox->value() ) };
https://github.com/qgis/QGIS/pull/39079/checks?check_run_id=1181360827#step:4:1693
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Alessandro Pasotti
QCooperative: www.qcooperative.net
ItOpen: www.itopen.it