284 lines
24 KiB
HTML
284 lines
24 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<title>pow, powf, powl</title>
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<link rel="stylesheet" href="site_modules.css" />
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_numeric_math_pow skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading">pow, powf, powl</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="c.html">c</a>‎ | <a href="c-numeric.html">numeric</a>‎ | <a href="c-numeric-math.html">math</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<table class="t-dcl-begin">
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<td>
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<div>定义于头文件 <code><math.h></code></div>
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</td>
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<td></td>
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<td></td>
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<div><span class="mw-geshi c source-c"><span class="kw4">float</span> powf<span class="br0">(</span> <span class="kw4">float</span> base, <span class="kw4">float</span> exponent <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<td><span class="t-mark-rev t-since-c99">(C99 起)</span></td>
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<tr class="t-dcl">
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<div><span class="mw-geshi c source-c"><span class="kw4">double</span> pow<span class="br0">(</span> <span class="kw4">double</span> base, <span class="kw4">double</span> exponent <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(2)</td>
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<td class="t-dcl-nopad"></td>
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<tr class="t-dcl t-since-c99">
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<div><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span> powl<span class="br0">(</span> <span class="kw4">long</span> <span class="kw4">double</span> base, <span class="kw4">long</span> <span class="kw4">double</span> exponent <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(3)</td>
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<td><span class="t-mark-rev t-since-c99">(C99 起)</span></td>
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</tr>
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<tr class="t-dsc-header">
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<td>
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<div>定义于头文件 <code><tgmath.h></code></div>
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</td>
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<td></td>
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<td></td>
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<tr class="t-dcl t-since-c99">
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<div><span class="mw-geshi c source-c"><span class="co2">#define pow( base, exponent )</span></span></div>
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</td>
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<td>(4)</td>
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<td><span class="t-mark-rev t-since-c99">(C99 起)</span></td>
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</tr>
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<tr class="t-dcl-sep">
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<td></td>
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<td></td>
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<td></td>
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</tbody>
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</table>
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<div class="t-li1"><span class="t-li">1-3)</span> 计算 <code>base</code> 的 <code>exponent</code> 次幂。</div>
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<div class="t-li1"><span class="t-li">4)</span> 泛型宏：若任何参数拥有 <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> 类型，则调用 <code>powl</code> 。否则，若任何参数拥有整数类型或 <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> 类型，则调用 <code>pow</code> 。否则调用 <code>powf</code> 。若至少一个参数为复数或虚数，则宏调用对应的复函数（ <span class="t-c"><span class="mw-geshi c source-c"><a href="c-numeric-complex-cpow.html"><span class="kw775">cpowf</span></a></span></span> 、 <span class="t-c"><span class="mw-geshi c source-c"><a href="c-numeric-complex-cpow.html"><span class="kw774">cpow</span></a></span></span> 、 <span class="t-c"><span class="mw-geshi c source-c"><a href="c-numeric-complex-cpow.html"><span class="kw776">cpowl</span></a></span></span> ）。</div>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<tr class="t-par">
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<td>base</td>
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<td>-</td>
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<td>作为底的浮点值</td>
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</tr>
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<tr class="t-par">
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<td>exponent</td>
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<td>-</td>
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<td>作为指数的浮点值</td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>若不出现错误，则返回 <code>base</code> 的 <code>exponent</code> 次幂（ <span class="texhtml" style="white-space: nowrap;">base<span class="t-su">exponent<br /></span></span> ）。</p>
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<p>若出现定义域错误，则返回实现定义值（支持的平台上为 NaN ）。</p>
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<p>若出现极点错误或上溢所致的值域错误，则返回 <code>±HUGE_VAL</code> 、 <code>±HUGE_VALF</code> 或 <code>±HUGE_VALL</code> 。</p>
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<p>若出现下溢所致的值域错误，则返回（舍入后的）正确结果。</p>
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<h3><span class="mw-headline" id=".E9.94.99.E8.AF.AF.E5.A4.84.E7.90.86">错误处理</span></h3>
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<p>报告 <a href="c-numeric-math-math_errhandling.html"><tt>math_errhandling</tt></a> 中指定的错误。</p>
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<p>若 <code>base</code> 有限且为负，且 <code>exponent</code> 有限且为非整数，则出现定义域错误，并可能出现值域错误。</p>
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<p>若 <code>base</code> 为零且 <code>exponent</code> 为零，则可能出现定义域错误。</p>
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<p>若 <code>base</code> 为零且 <code>exponent</code> 为负，则可能出现定义域错误或极点错误。</p>
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<p>若实现支持 IEEE 浮点算术（ IEC 60559 ），则</p>
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<ul>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">+</span><span class="nu0">0</span>, exponent<span class="br0">)</span></span></span> ，其中 <code>exponent</code> 为负奇数，返回 <code>+∞</code> 并引发 <span class="t-lc"><a href="c-numeric-fenv-FE_exceptions.html">FE_DIVBYZERO</a></span></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span><span class="nu0">0</span>, exponent<span class="br0">)</span></span></span> ，其中 <code>exponent</code> 为负奇数，返回 <code>-∞</code> 并引发 <span class="t-lc"><a href="c-numeric-fenv-FE_exceptions.html">FE_DIVBYZERO</a></span></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>±<span class="nu0">0</span>, exponent<span class="br0">)</span></span></span> ，其中 <code>exponent</code> 为有限负数，且为偶数或非整数，则返回 +∞ 并引发 <span class="t-lc"><a href="c-numeric-fenv-FE_exceptions.html">FE_DIVBYZERO</a></span></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>±<span class="nu0">0</span>, <span class="sy2">-</span>∞<span class="br0">)</span></span></span> 返回 +∞ <span class="t-rev-inl t-until-c23"><span>并可能引发 <span class="t-lc"><a href="c-numeric-fenv-FE_exceptions.html">FE_DIVBYZERO</a></span></span> <span><span class="t-mark-rev t-until-c23">(C23 前)</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">+</span><span class="nu0">0</span>, exponent<span class="br0">)</span></span></span> ，其中 <code>exponent</code> 为正奇数，返回 +0</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span><span class="nu0">0</span>, exponent<span class="br0">)</span></span></span> ，其中 <code>exponent</code> 为正奇数，返回 -0</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>±<span class="nu0">0</span>, exponent<span class="br0">)</span></span></span> ，其中 <code>exponent</code> 为正非整数或正偶数，返回 +0</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span><span class="nu0">1</span>, ±∞<span class="br0">)</span></span></span> returns <code>1</code></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">+</span><span class="nu0">1</span>, exponent<span class="br0">)</span></span></span> 对于任何 <code>exponent</code> 返回 <code>1</code> ，即使 <code>exponent</code> 为 <code>NaN</code></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>base, ±<span class="nu0">0</span><span class="br0">)</span></span></span> 对于任何 <code>base</code> 返回 <code>1</code> ，即使 <code>base</code> 为 <code>NaN</code></li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>base, exponent<span class="br0">)</span></span></span> 返回 <code>NaN</code> 并引发 <span class="t-lc"><a href="c-numeric-fenv-FE_exceptions.html">FE_INVALID</a></span> ，若 <code>base</code> 为有限负数且 <code>exponent</code> 为有限非整数。</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>base, <span class="sy2">-</span>∞<span class="br0">)</span></span></span> 对任何 <code>|base|<1</code> 返回 +∞</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>base, <span class="sy2">-</span>∞<span class="br0">)</span></span></span> 对任何 <code>|base|>1</code> 返回 +0</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>base, <span class="sy2">+</span>∞<span class="br0">)</span></span></span> 对任何 <code>|base|<1</code> 返回 +0</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span>base, <span class="sy2">+</span>∞<span class="br0">)</span></span></span> 对任何 <code>|base|>1</code> 返回 +∞</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span>∞, exponent<span class="br0">)</span></span></span> 返回 -0 ，若 <code>exponent</code> 为负奇整数</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span>∞, exponent<span class="br0">)</span></span></span> 返回 +0 ，若 <code>exponent</code> 为负非整数或负偶数</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span>∞, exponent<span class="br0">)</span></span></span> 返回 -∞ ，若 <code>exponent</code> 为正奇整数</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">-</span>∞, exponent<span class="br0">)</span></span></span> 返回 +∞ ，若 <code>exponent</code> 为正非整数或正偶数</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">+</span>∞, exponent<span class="br0">)</span></span></span> 对任何 <code>exponent</code> 返回 +0</li>
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<li><span class="t-c"><span class="mw-geshi c source-c">pow<span class="br0">(</span><span class="sy2">+</span>∞, exponent<span class="br0">)</span></span></span> 对任何 <code>exponent</code> 返回 +∞</li>
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<li>除了指定于上处，若任何参数为 NaN ，则返回 NaN</li>
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</ul>
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<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
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<p>尽管 <code>pow</code> 不能获得负数的开方根，也为 <code>exponent</code> 为 1/3 的常用情况提供了 <span class="t-lc"><a href="c-numeric-math-cbrt.html">cbrt</a></span> 。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<div class="t-example">
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<div class="t-example-live-link"></div>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="c source-c">
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<pre class="de1"><span class="co2">#include <stdio.h></span>
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<span class="co2">#include <math.h></span>
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<span class="co2">#include <errno.h></span>
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<span class="co2">#include <fenv.h></span>
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<span class="co2">#pragma STDC FENV_ACCESS ON</span>
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<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
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<span class="br0">{</span>
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<span class="co1">// 典型使用</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(2, 10) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="nu0">2</span>,<span class="nu0">10</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(2, 0.5) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="nu0">2</span>,<span class="nu16">0.5</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(-2, -3) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="sy2">-</span><span class="nu0">2</span>,<span class="sy2">-</span><span class="nu0">3</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="co1">// 特殊值</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(-1, NAN) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="sy2">-</span><span class="nu0">1</span>,NAN<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(+1, NAN) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="sy2">+</span><span class="nu0">1</span>,NAN<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(INFINITY, 2) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span>INFINITY, <span class="nu0">2</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(INFINITY, -1) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span>INFINITY, <span class="sy2">-</span><span class="nu0">1</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="co1">// 错误处理</span>
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<span class="kw2">errno</span> <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> <a href="c-numeric-fenv-feclearexcept.html"><span class="kw717">feclearexcept</span></a><span class="br0">(</span><a href="c-numeric-fenv-FE_exceptions.html"><span class="kw728">FE_ALL_EXCEPT</span></a><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(-1, 1/3) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="sy2">-</span><span class="nu0">1</span>, <span class="nu16">1.0</span><span class="sy2">/</span><span class="nu0">3</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="kw1">if</span><span class="br0">(</span><span class="kw2">errno</span> <span class="sy1">==</span> <a href="c-error-errno_macros.html"><span class="kw426">EDOM</span></a><span class="br0">)</span> <a href="c-io-perror.html"><span class="kw878">perror</span></a><span class="br0">(</span><span class="st0">" errno == EDOM"</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="kw1">if</span><span class="br0">(</span><a href="c-numeric-fenv-fetestexcept.html"><span class="kw718">fetestexcept</span></a><span class="br0">(</span><a href="c-numeric-fenv-FE_exceptions.html"><span class="kw731">FE_INVALID</span></a><span class="br0">)</span><span class="br0">)</span> <a href="c-io-puts.html"><span class="kw835">puts</span></a><span class="br0">(</span><span class="st0">" FE_INVALID raised"</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-numeric-fenv-feclearexcept.html"><span class="kw717">feclearexcept</span></a><span class="br0">(</span><a href="c-numeric-fenv-FE_exceptions.html"><span class="kw728">FE_ALL_EXCEPT</span></a><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"pow(-0, -3) = %f<span class="es1">\n</span>"</span>, pow<span class="br0">(</span><span class="sy2">-</span><span class="nu16">0.0</span>, <span class="sy2">-</span><span class="nu0">3</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="kw1">if</span><span class="br0">(</span><a href="c-numeric-fenv-fetestexcept.html"><span class="kw718">fetestexcept</span></a><span class="br0">(</span><a href="c-numeric-fenv-FE_exceptions.html"><span class="kw729">FE_DIVBYZERO</span></a><span class="br0">)</span><span class="br0">)</span> <a href="c-io-puts.html"><span class="kw835">puts</span></a><span class="br0">(</span><span class="st0">" FE_DIVBYZERO raised"</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span></pre></div>
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</div>
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<p>可能的输出：</p>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="text source-text">
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<pre class="de1">pow(2, 10) = 1024.000000
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pow(2, 0.5) = 1.414214
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pow(-2, -3) = -0.125000
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pow(-1, NAN) = nan
|
|
pow(+1, NAN) = 1.000000
|
|
pow(INFINITY, 2) = inf
|
|
pow(INFINITY, -1) = 0.000000
|
|
pow(-1, 1/3) = -nan
|
|
errno == EDOM: Numerical argument out of domain
|
|
FE_INVALID raised
|
|
pow(-0, -3) = -inf
|
|
FE_DIVBYZERO raised</pre></div>
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</div>
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|
</div>
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|
<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">引用</span></h3>
|
|
<div class="t-ref-std-11">
|
|
<ul>
|
|
<li>C11 标准（ISO/IEC 9899:2011）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>7.12.7.4 The pow functions (p: 248-249)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>7.25 Type-generic math <tgmath.h> (p: 373-375)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>F.10.4.4 The pow functions (p: 524-525)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<div class="t-ref-std-c99">
|
|
<ul>
|
|
<li>C99 标准（ISO/IEC 9899:1999）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>7.12.7.4 The pow functions (p: 229)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>7.22 Type-generic math <tgmath.h> (p: 335-337)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>F.9.4.4 The pow functions (p: 461)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<div class="t-ref-std-c89">
|
|
<ul>
|
|
<li>C89/C90 标准（ISO/IEC 9899:1990）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>4.5.5.1 The pow function</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="c-numeric-math-sqrt.html"><span class="t-lines"><span>sqrt</span><span>sqrtf</span><span>sqrtl</span></span></a></div>
|
|
<div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>计算平方根（ <span class="mjax" style="display:none">\(\small{\sqrt{x} }\)</span><span class="mjax-fallback texhtml" style="white-space: nowrap;"><span class="t-mrad"><span>√</span><span>x</span></span></span> ）<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="c-numeric-math-cbrt.html"><span class="t-lines"><span>cbrt</span><span>cbrtf</span><span>cbrtl</span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>计算立方根（ <span class="mjax" style="display:none">\(\small{\sqrt[3]{x} }\)</span><span class="mjax-fallback texhtml" style="white-space: nowrap;"><span class="t-mrad"><span>3</span><span>√</span><span>x</span></span></span> ）<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="c-numeric-math-hypot.html"><span class="t-lines"><span>hypot</span><span>hypotf</span><span>hypotl</span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>计算两个给定数平方和的平方根 （ <span class="mjax" style="display:none">\(\scriptsize{\sqrt{x^2+y^2} }\)</span><span class="mjax-fallback texhtml" style="white-space: nowrap;"><span class="t-mrad"><span>√</span><span>x<span class="t-su">2<br /></span>+y<span class="t-su">2<br /></span></span></span></span> ）<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="c-numeric-complex-cpow.html"><span class="t-lines"><span>cpow</span><span>cpowf</span><span>cpowl</span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>计算复数幂函数<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|