/**
* Make a shallow copy of this UnitTerm. That is, the underlying Unit or UnitExpr is not copied.
*
* @return The copy of this UnitTerm
*/
public UnitTerm copy() {
UnitTerm retv = new UnitTerm();
retv.setVariable(_variable);
retv.setExponent(getExponent());
retv.setUnit(_unit);
retv.setUnitExpr(_unitExpr);
retv._setType(_type);
return retv;
}
/**
* Invert this UnitTerm.
*
* @return The inverse of this UnitTerm.
*/
public UnitTerm invert() {
UnitTerm retv = copy();
switch (_type) {
case _VARIABLE:
case _UNIT:
{
retv.setExponent(-getExponent());
break;
}
case _UNITEXPR:
{
retv.setUnitExpr(_unitExpr.invert());
break;
}
}
return retv;
}