<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" type="guide" id="function" lang="zh-CN">

    <info>
        <link type="guide" xref="index#equation"/>
    <credit type="translator copyright"><name>Christopher Meng</name><email>i@cicku.me</email><years>2012-2013</years></credit><credit type="translator copyright"><name>ravix</name><email>dr.neemous@gmail.com</email><years>2013</years></credit><credit type="translator copyright"><name>Dianjin Wang</name><email>1132321739qq@gmail.com</email><years>2012</years></credit><credit type="translator copyright"><name>Cravix</name><email>dr.neemous@gmail.com</email><years>2013</years></credit><credit type="translator copyright"><name>nyanyh</name><email>rebuilty@gmail.com</email><years>2013</years></credit><credit type="translator copyright"><name>liulitchi</name><email>xingzuo88@qq.com</email><years>2013</years></credit><credit type="translator copyright"><name>玉堂白鹤</name><email>yjwork@qq.com</email><years>2015</years></credit><credit type="translator copyright"><name>Mingye Wang</name><email>arthur200126@gmail.com</email><years>2015-2016</years></credit><credit type="translator copyright"><name>白铭骢</name><email>jeffbai@aosc.xyz</email><years>2015-2016</years></credit><credit type="translator copyright"><name>刘子兴</name><email>liushuyu@aosc.xyz</email><years>2015-2016</years></credit></info>

	<title>函数</title>
    
    <p>
    Functions can be used by inserting the name of the function followed by the function argument.
    If the argument is not a number or <link xref="variable">variable</link> then use parenthesis around the argument.
    </p>
    <example>
    <p>sin 30</p>
    <p>
    abs (5−9)
    </p>
    </example>
    <p>
    The following functions are defined.
    </p>
    <table>
    <tr>
    <td><p>abs</p></td>
    <td><p><link xref="absolute">Absolute Value</link></p></td>
    </tr>
    <tr>
    <td><p>cos</p></td>
    <td><p><link xref="trigonometry">Cosine</link></p></td>
    </tr>
    <tr>
    <td><p>cosh</p></td>
    <td><p><link xref="trigonometry">Hyperbolic Cosine</link></p></td>
    </tr>
    <tr>
    <td><p>erf</p></td>
    <td><p>Gauss Error function</p></td>
    </tr>
    <tr>
    <td><p>frac</p></td>
    <td><p>小数部分</p></td>
    </tr>
    <tr>
    <td><p>int</p></td>
    <td><p>整数部分</p></td>
    </tr>
    <tr>
    <td><p>ln</p></td>
    <td><p><link xref="logarithm">Natural Logarithm</link></p></td>
    </tr>
    <tr>
    <td><p>log</p></td>
    <td><p><link xref="logarithm">Logarithm</link></p></td>
    </tr>
    <tr>
    <td><p>not</p></td>
    <td><p><link xref="boolean">Boolean NOT</link></p></td>
    </tr>
    <tr>
    <td><p>ones</p></td>
    <td><p>Ones complement</p></td>
    </tr>
    <tr>
    <td><p>sin</p></td>
    <td><p><link xref="trigonometry">Sine</link></p></td>
    </tr>
    <tr>
    <td><p>sinh</p></td>
    <td><p><link xref="trigonometry">Hyperbolic Sine</link></p></td>
    </tr>
    <tr>
    <td><p>sqrt</p></td>
    <td><p><link xref="power">Square Root</link></p></td>
    </tr>
    <tr>
    <td><p>tan</p></td>
    <td><p><link xref="trigonometry">Tangent</link></p></td>
    </tr>
    <tr>
    <td><p>tanh</p></td>
    <td><p><link xref="trigonometry">Hyperbolic Tangent</link></p></td>
    </tr>
    <tr>
    <td><p>twos</p></td>
    <td><p>Twos complement</p></td>
    </tr>
    <tr>
    <td><p>zeta</p></td>
    <td><p>Riemann zeta function</p></td>
    </tr>
    </table>
    <p>
    <app>MATE Calculator</app> does not support user-defined functions.
    </p>
</page>
