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42 lines
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<!Converted with LaTeX2HTML 0.6.5 (Tue Nov 15 1994) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds >
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<TITLE>2.5.3. Bit-Vectors</TITLE>
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<meta name="description" value=" Bit-Vectors">
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<meta name="distribution" value="global">
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<P>
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<b>Common Lisp the Language, 2nd Edition</b>
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<BR> <HR><A NAME=tex2html1903 HREF="node33.html"><IMG ALIGN=BOTTOM ALT="next" SRC="icons/next_motif.gif"></A> <A NAME=tex2html1901 HREF="node29.html"><IMG ALIGN=BOTTOM ALT="up" SRC="icons/up_motif.gif"></A> <A NAME=tex2html1897 HREF="node31.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="icons/previous_motif.gif"></A> <A NAME=tex2html1905 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="icons/contents_motif.gif"></A> <A NAME=tex2html1906 HREF="index.html"><IMG ALIGN=BOTTOM ALT="index" SRC="icons/index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html1904 HREF="node33.html"> Hash Tables</A>
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<B>Up:</B> <A NAME=tex2html1902 HREF="node29.html"> Arrays</A>
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<B> Previous:</B> <A NAME=tex2html1898 HREF="node31.html"> Strings</A>
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<HR> <P>
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<H2><A NAME=SECTION00653000000000000000>2.5.3. Bit-Vectors</A></H2>
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<P>
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A bit-vector can be written as the sequence of bits contained in the
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string, preceded by <tt>#*</tt>; any delimiter character, such as whitespace,
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will terminate the bit-vector syntax.
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For example:
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<P><pre>
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#*10110 ;A five-bit bit-vector; bit 0 is a 1
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#* ;An empty bit-vector
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</pre><P>
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The bits notated following the <tt>#*</tt>, taken from left to right,
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occupy locations within the bit-vector with increasing indices.
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The leftmost notated bit is bit-vector element number 0, the next one
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is element number 1, and so on.
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<P>
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The function <tt>prin1</tt> will print any bit-vector (not just a simple one)
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using this syntax, but the function <tt>read</tt> will always construct
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a simple bit-vector when it reads this syntax.
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<P>
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<HR>
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<P><ADDRESS>
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AI.Repository@cs.cmu.edu
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</ADDRESS>
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