Change the reference style for subfloats: from 1a to 1(a)

Question

How to change the reference style to subfloats (package subfloat) in a figure from <number><letter> to <number>(<letter>).

Answer 1

From the subfloat documentation, section 4 "Change the label format":

\renewcommand*\thesubfloatfigure{\themainfigure(\alph{subfloatfigure})}

or

\renewcommand*\thesubfloattable{\themaintable(\alph{subfloattable})}