mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-18 05:26:57 +08:00
88 lines
3.7 KiB
HTML
88 lines
3.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
<html>
|
||
<head>
|
||
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
||
<title>返回除法的浮点数余数</title>
|
||
</head>
|
||
<body class="docs"><div id="layout">
|
||
<div id="layout-content"><div id="function.fmod" class="refentry">
|
||
<div class="refnamediv">
|
||
<h1 class="refname">fmod</h1>
|
||
<p class="verinfo">(PHP 4 >= 4.2.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fmod</span> — <span class="dc-title">返回除法的浮点数余数</span></p>
|
||
|
||
</div>
|
||
<div class="refsect1 description" id="refsect1-function.fmod-description">
|
||
<h3 class="title">说明</h3>
|
||
<div class="methodsynopsis dc-description">
|
||
<span class="methodname"><strong>fmod</strong></span>
|
||
( <span class="methodparam"><span class="type">float</span> <code class="parameter">$x</code></span>
|
||
, <span class="methodparam"><span class="type">float</span> <code class="parameter">$y</code></span>
|
||
) : <span class="type">float</span></div>
|
||
|
||
<p class="para rdfs-comment">
|
||
返回被除数（<code class="parameter">x</code>）除以除数（<code class="parameter">y</code>）所得的浮点数余数。余数（<var class="varname"><var class="varname">r</var></var>）的定义是：x
|
||
= i * y + r，其中 <var class="varname"><var class="varname">i</var></var> 是整数。如果 <code class="parameter">y</code>
|
||
是非零值，则 <var class="varname"><var class="varname">r</var></var> 和
|
||
<code class="parameter">x</code> 的符号相同并且其数量值小于
|
||
<code class="parameter">y</code>。
|
||
</p>
|
||
</div>
|
||
|
||
<div class="refsect1 parameters" id="refsect1-function.fmod-parameters">
|
||
<h3 class="title">参数</h3>
|
||
<p class="para">
|
||
<dl>
|
||
|
||
|
||
<dt>
|
||
<code class="parameter">x</code></dt>
|
||
|
||
<dd>
|
||
|
||
<p class="para">
|
||
被除数
|
||
</p>
|
||
</dd>
|
||
|
||
|
||
|
||
<dt>
|
||
<code class="parameter">y</code></dt>
|
||
|
||
<dd>
|
||
|
||
<p class="para">
|
||
除数
|
||
</p>
|
||
</dd>
|
||
|
||
|
||
</dl>
|
||
|
||
</p>
|
||
</div>
|
||
|
||
<div class="refsect1 returnvalues" id="refsect1-function.fmod-returnvalues">
|
||
<h3 class="title">返回值</h3>
|
||
<p class="para">
|
||
<code class="parameter">x</code>/<code class="parameter">y</code>的浮点数余数。
|
||
</p>
|
||
</div>
|
||
|
||
<div class="refsect1 examples" id="refsect1-function.fmod-examples">
|
||
<h3 class="title">范例</h3>
|
||
<p class="para">
|
||
<div class="example" id="example-4128">
|
||
<p><strong>Example #1 <span class="function"><strong>fmod()</strong></span> 的使用</strong></p>
|
||
<div class="example-contents">
|
||
<div class="phpcode"><pre><span style="color: #000000">
|
||
<span style="color: #0000BB"><?php<br />$x </span><span style="color: #007700">= </span><span style="color: #0000BB">5.7</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$y </span><span style="color: #007700">= </span><span style="color: #0000BB">1.3</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r </span><span style="color: #007700">= </span><span style="color: #0000BB">fmod</span><span style="color: #007700">(</span><span style="color: #0000BB">$x</span><span style="color: #007700">, </span><span style="color: #0000BB">$y</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// $r equals 0.5, because 4 * 1.3 + 0.5 = 5.7<br /></span><span style="color: #0000BB">?></span>
|
||
</span>
|
||
</pre></div>
|
||
</div>
|
||
|
||
</div>
|
||
</p>
|
||
</div>
|
||
|
||
</div></div></div></body></html> |