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-<head>
-<title>UK TeX FAQ -- question label prinvalint</title>
-</head><body>
-<h3>The Principal Value Integral symbol</h3>
-<p/>This symbol (an integral sign, &#8216;crossed&#8217;) does not appear in any of
-the fonts ordinarily available to (La)TeX users, but it can be
-created by use of the following macros:
-<pre>
-\def\Xint#1{\mathchoice
- {\XXint\displaystyle\textstyle{#1}}%
- {\XXint\textstyle\scriptstyle{#1}}%
- {\XXint\scriptstyle\scriptscriptstyle{#1}}%
- {\XXint\scriptscriptstyle\scriptscriptstyle{#1}}%
- \!\int}
-\def\XXint#1#2#3{{\setbox0=\hbox{$#1{#2#3}{\int}$}
- \vcenter{\hbox{$#2#3$}}\kern-.5\wd0}}
-\def\ddashint{\Xint=}
-\def\dashint{\Xint-}
-</pre>
-
-<code>\</code><code>dashint</code> gives a single-dashed integral sign, <code>\</code><code>ddashint</code> a
-double-dashed one.
-<p/><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=prinvalint">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=prinvalint</a>
-</body>