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| <h4 class="subsection">6.2.3 Prefix Operator</h4> |
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| <p><a name="index-prefix-operators-256"></a><samp><span class="command">as</span></samp> has the following <dfn>prefix operators</dfn>. They each take |
| one argument, which must be absolute. |
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| <dt><code>-</code><dd><dfn>Negation</dfn>. Two's complement negation. |
| <br><dt><code>~</code><dd><dfn>Complementation</dfn>. Bitwise not. |
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