1<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
2<!DOCTYPE funcs
3  SYSTEM '../../../clonk.dtd'>
4<?xml-stylesheet type="text/xsl" href="../../../clonk.xsl"?>
5<funcs>
6  <func>
7    <title>ArcCos</title>
8    <category>Arithmetics</category>
9    <version>5.1 OC</version>
10    <syntax>
11      <rtype>int</rtype>
12      <params>
13        <param>
14          <type>int</type>
15          <name>value</name>
16          <desc>Length of the adjacent leg</desc>
17        </param>
18        <param>
19          <type>int</type>
20          <name>radius</name>
21          <desc>Length of hypotenuse</desc>
22        </param>
23      </params>
24    </syntax>
25    <desc>Calculates arc cosine of value/radius, or x = arccos(value/radius). This corresponds to cos(x) = value/radius. This function is used to calculate an angle from horizontal and vertical offsets. However, in most cases <funclink>Angle</funclink>() does what you need.</desc>
26    <related>
27      <funclink>Angle</funclink>
28      <funclink>ArcSin</funclink>
29      <funclink>Cos</funclink>
30    </related>
31  </func>
32  <author>Sven2</author><date>2001-11</date>
33</funcs>
34