92 lines
3.5 KiB
HTML
92 lines
3.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2016 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using as: Prefix Ops</title>
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<meta name="description" content="Using as: Prefix Ops">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Integer-Exprs.html#Integer-Exprs" rel="up" title="Integer Exprs">
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<link href="Infix-Ops.html#Infix-Ops" rel="next" title="Infix Ops">
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<a name="Prefix-Ops"></a>
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<div class="header">
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<p>
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Next: <a href="Infix-Ops.html#Infix-Ops" accesskey="n" rel="next">Infix Ops</a>, Previous: <a href="Operators.html#Operators" accesskey="p" rel="prev">Operators</a>, Up: <a href="Integer-Exprs.html#Integer-Exprs" accesskey="u" rel="up">Integer Exprs</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Prefix-Operator"></a>
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<h4 class="subsection">6.2.3 Prefix Operator</h4>
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<a name="index-prefix-operators"></a>
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<p><code>as</code> has the following <em>prefix operators</em>. They each take
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one argument, which must be absolute.
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</p>
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<dl compact="compact">
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<dt><code>-</code></dt>
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<dd><p><em>Negation</em>. Two’s complement negation.
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</p></dd>
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<dt><code>~</code></dt>
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<dd><p><em>Complementation</em>. Bitwise not.
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</p></dd>
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</dl>
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</body>
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</html>
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