60 lines
4.4 KiB
HTML
60 lines
4.4 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
|
|
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>数值</title>
|
|
<link rel="stylesheet" href="ext.css" />
|
|
<link rel="stylesheet" href="site_modules.css" />
|
|
</head>
|
|
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_numeric skin-cppreference2 action-view cpp-navbar">
|
|
<div id="cpp-content-base">
|
|
<div id="content"><a id="top"></a>
|
|
<h1 id="firstHeading" class="firstHeading">数值</h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="c.html">c</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<p>C 数值库包含常用数学函数和类型，还支持随机数生成。</p>
|
|
<h3><span class="mw-headline" id=".E5.B8.B8.E7.94.A8.E6.95.B0.E5.AD.A6.E5.87.BD.E6.95.B0"><a href="c-numeric-math.html">常用数学函数</a></span></h3>
|
|
<p>头文件 <code>math.h</code> 提供<a href="c-numeric-math.html">标准 C 库数学函数</a>，例如 <span class="t-lc"><a href="c-numeric-math-fabs.html">fabs</a></span> 、 <span class="t-lc"><a href="c-numeric-math-sqrt.html">sqrt</a></span> 和 <span class="t-lc"><a href="c-numeric-math-sin.html">sin</a></span> 。</p>
|
|
<h3><span class="mw-headline" id=".E6.B5.AE.E7.82.B9.E7.8E.AF.E5.A2.83"><a href="c-numeric-fenv.html">浮点环境</a></span></h3>
|
|
<p>头文件 <code>fenv.h</code> 定义<a href="c-numeric-fenv.html">关系到异常浮点状态的标志和函数</a>，例如溢出和除以零。</p>
|
|
<h3><span class="mw-headline" id=".E4.BC.AA.E9.9A.8F.E6.9C.BA.E6.95.B0.E7.94.9F.E6.88.90"><a href="c-numeric-random.html">伪随机数生成</a></span></h3>
|
|
<p>头文件 <code>stdlib.h</code> 亦包含经由 <span class="t-lc"><a href="c-numeric-random-srand.html">srand</a></span> 和 <span class="t-lc"><a href="c-numeric-random-rand.html">rand</a></span> 生成的 C 风格随机数。</p>
|
|
<h3><span class="mw-headline" id=".E5.A4.8D.E6.95.B0.E7.AE.97.E6.9C.AF"><a href="c-numeric-complex.html">复数算术</a></span></h3>
|
|
<p>头文件 <code>complex.h</code> 提供关于<a href="c-numeric-complex.html">复数</a>的类型和函数。</p>
|
|
<h3><span class="mw-headline" id=".E6.B3.9B.E5.9E.8B.E6.95.B0.E5.AD.A6"><a href="c-numeric-tgmath.html">泛型数学</a></span></h3>
|
|
<p>头文件 <code>tgmath.h</code> 为函数提供某些名为 XXX 的宏：</p>
|
|
<ul>
|
|
<li>实函数：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span> 变体 <code>XXXf</code></li>
|
|
<li><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> 变体 <code>XXX</code></li>
|
|
<li><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> 变体 <code>XXXl</code></li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<ul>
|
|
<li>复函数：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span> _Complex</span></span> 变体 <code>cXXXf</code></li>
|
|
<li><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span> _Complex</span></span> 变体 <code>cXXX</code></li>
|
|
<li><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span> _Complex</span></span> 变体 <code>cXXXl</code></li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
|
|
<table class="t-dsc-begin"></table>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|