%% frontispiece.sty version 0.1 for book.sty of LaTeX version 2.09
%% Copyright (C) Taiji Yamada <taiji@aihara.co.jp>
\@ifundefined{thechapter}{}{%
\def\thefigure{%
 \ifnum\thechapter=0
  \@arabic\c@figure
 \else\thechapter.\@arabic\c@figure
 \fi}
\def\fnum@figure{%
 \ifnum\thechapter=0
  Figure~\thefigure
 \else
  \@ifundefined{figurename}{Figure~\thefigure}{\figurename~\thefigure}
 \fi}
}