Quantity dot(OSQuantityVector lVector, const OSQuantityVector& rVector) { Unit lUnits(lVector.units()), rUnits(rVector.units()); OptionalTemperatureUnit ltu = lUnits.optionalCast<TemperatureUnit>(); OptionalTemperatureUnit rtu = rUnits.optionalCast<TemperatureUnit>(); Unit resultUnits; if (ltu && rtu) { resultUnits = ltu.get() * rtu.get(); } else { resultUnits = lUnits * rUnits; } ScaleOpReturnType resultScale = lVector.scale() * rVector.scale(); lVector *= resultScale.second; DoubleVector lValues(lVector.values()), rValues(rVector.values()); double resultValue = dot(createVector(lValues),createVector(rValues)); return Quantity(resultValue,resultUnits); }