xcu_chap01.html

posix标准英文,html格式

<p class="tent">Section 6.5.2, Postfix Operators</p>
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<p class="tent">postfix --</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">unary +</p>
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<p class="tent">Section 6.5.3, Unary Operators</p>
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<p class="tent">unary -</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">prefix ++</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">prefix --</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">&#152;</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">!</p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><i>sizeof</i>()</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">*</p>
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<p class="tent">Section 6.5.5, Multiplicative Operators</p>
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<p class="tent">/</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">%</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">+</p>
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<p class="tent">Section 6.5.6, Additive Operators</p>
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<p class="tent">-</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">&lt;&lt;</p>
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<p class="tent">Section 6.5.7, Bitwise Shift Operators</p>
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<p class="tent">&gt;&gt;</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">&lt;, &lt;=</p>
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<p class="tent">Section 6.5.8, Relational Operators</p>
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<p class="tent">&gt;, &gt;=</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">==</p>
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<p class="tent">Section 6.5.9, Equality Operators</p>
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<p class="tent">!=</p>
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<p class="tent">&nbsp;</p>
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<p class="tent">&amp;</p>
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<p class="tent">Section 6.5.10, Bitwise AND Operator</p>
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<p class="tent">^</p>
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<p class="tent">Section 6.5.11, Bitwise Exclusive OR Operator</p>
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<p class="tent">|</p>
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<p class="tent">Section 6.5.12, Bitwise Inclusive OR Operator</p>
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<p class="tent">&amp;&amp;</p>
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<p class="tent">Section 6.5.13, Logical AND Operator</p>
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<p class="tent">||</p>
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<p class="tent">Section 6.5.14, Logical OR Operator</p>
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<p class="tent"><i>expr</i>?<i>expr</i>:<i>expr</i></p>
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<p class="tent">Section 6.5.15, Conditional Operator</p>
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<p class="tent">=, *=, /=, %=, +=, -=</p>
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<p class="tent">Section 6.5.16, Assignment Operators</p>
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<p class="tent">&lt;&lt;=, &gt;&gt;=, &amp;=, ^=, |=</p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>if</b> ()</p>
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<p class="tent">Section 6.8.4, Selection Statements</p>
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<p class="tent"><b>if</b> () ... <b>else</b></p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>switch</b> ()</p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>while</b> ()</p>
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<p class="tent">Section 6.8.5, Iteration Statements</p>
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<p class="tent"><b>do</b> ... <b>while</b> ()</p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>for</b> ()</p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>goto</b></p>
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<p class="tent">Section 6.8.6, Jump Statements</p>
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<p class="tent"><b>continue</b></p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>break</b></p>
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<p class="tent">&nbsp;</p>
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<p class="tent"><b>return</b></p>
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<p class="tent">&nbsp;</p>
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<p>The evaluation of arithmetic expressions shall be equivalent to that described in Section 6.5, Expressions, of the ISO&nbsp;C
standard.</p>

<h5><a name="tag_01_07_02_02"></a>Mathematical Functions</h5>

<p>Any mathematical functions with the same names as those in the following sections of the ISO&nbsp;C standard:</p>

<ul>
<li>
<p>Section 7.12, Mathematics, <tt>&lt;math.h&gt;</tt></p>
</li>

<li>
<p>Section 7.20.2, Pseudo-Random Sequence Generation Functions</p>
</li>
</ul>

<p>shall be implemented to return the results equivalent to those returned from a call to the corresponding function described in
the ISO&nbsp;C standard.</p>

<h3><a name="tag_01_08">   1.8 </a>Portability</h3>

<p>Some of the utilities in the Shell and Utilities volume of IEEE&nbsp;Std&nbsp;1003.1-2001 and functions in the System Interfaces
volume of IEEE&nbsp;Std&nbsp;1003.1-2001 describe functionality that might not be fully portable to systems meeting the
requirements for POSIX conformance (see the Base Definitions volume of IEEE&nbsp;Std&nbsp;1003.1-2001, <a href=
"../basedefs/xbd_chap02.html#tag_02">Chapter 2, Conformance</a>).</p>

<p>Where optional, enhanced, or reduced functionality is specified, the text is shaded and a code in the margin identifies the
nature of the option, extension, or warning (see <a href="#tag_01_08_01">Codes</a>). For maximum portability, an application
should avoid such functionality.</p>