Re: 連分数

名前: misc
日時: 2003-12-24 00:57:25
IPアドレス: 220.214.18.*

>>24449
確かに無造作に \vecnter を使うのは安直でした．
今度はどうでしょうか．

\DeclareRobustCommand*\CFrac[2]{%
   \mathinner{\mathchoice
      {\@CFrac\textstyle\textfont{4}{#1}{#2}}%
      {\@CFrac\scriptstyle\textfont{}{#1}{#2}}%
      {\@CFrac\scriptscriptstyle\scriptfont{}{#1}{#2}}%
      {\@CFrac\scriptscriptstyle\scriptscriptfont{}{#1}{#2}}}}
\def\@CFrac#1#2#3#4#5{%
   {\dimen\tw@\fontdimen8#23\relax \dimen\tw@#3\dimen\tw@
    \setbox\z@\hbox{\m@th$#1\;{#4}\;\mathstrut$}%
    \@tempdima\dp\z@ \advance\@tempdima\dimen\tw@
    \setbox\tw@\hbox{\m@th$#1\;{#5}\;\mathstrut$}%
    \@tempdimb\ht\tw@ \advance\@tempdimb\dimen\tw@
    \dimen@ \ifdim\wd\z@>\wd\tw@ \wd\z@ \else \wd\tw@ \fi
    \setbox\z@\hbox to\dimen@{%
       \hss\unhbox\z@\hss
       \vrule \vrule\@width\z@\@depth\@tempdima}%
    \setbox\tw@\hbox to\dimen@{%
       \vrule\@width\z@\@height\@tempdimb \vrule
       \hss\unhbox\tw@\hss}%
    \dimen\tw@\fontdimen22#22\relax
    \advance\dimen\tw@\ht\z@ \advance\dimen\tw@\dp\z@
    \advance\dimen\tw@ .2\p@
    \setbox\z@\vbox{\box\z@ \hrule \box\tw@}%
    \advance\dimen\tw@-\ht\z@
    \raise\dimen\tw@\box\z@}}

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