? NS_NewMathMLmathBlockFrame(aPresShell, aNewFrame) : NS_NewMathMLmathInlineFrame(aPresShell, aNewFrame);
? NS_NewMathMLmathBlockFrame(aPresShell) : NS_NewMathMLmathInlineFrame(aPresShell);
NS_NewMathMLmathFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame,                      PRBool aIsBlock){  return (aIsBlock)    ? NS_NewMathMLmathBlockFrame(aPresShell, aNewFrame)    : NS_NewMathMLmathInlineFrame(aPresShell, aNewFrame);}