mirror of
https://github.com/gbdk-2020/gbdk-2020.git
synced 2026-03-23 07:27:15 +01:00
236 lines
12 KiB
HTML
236 lines
12 KiB
HTML
<!-- HTML header for doxygen 1.8.14-->
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<head>
|
|
<meta http-equiv="cache-control" content="max-age=86400"/>
|
|
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
|
|
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
|
|
<meta name="generator" content="Doxygen 1.8.20"/>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
|
<title>GBDK 2020 Docs: rand.h File Reference</title>
|
|
<link href="tabs.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="jquery.js"></script>
|
|
<script type="text/javascript" src="dynsections.js"></script>
|
|
<link href="navtree.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="resize.js"></script>
|
|
<script type="text/javascript" src="navtreedata.js"></script>
|
|
<script type="text/javascript" src="navtree.js"></script>
|
|
<link href="search/search.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="search/searchdata.js"></script>
|
|
<script type="text/javascript" src="search/search.js"></script>
|
|
<link href="doxygen.css" rel="stylesheet" type="text/css" />
|
|
<link href="doxygen_extra.css" rel="stylesheet" type="text/css"/>
|
|
</head>
|
|
<body>
|
|
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
|
<div id="titlearea">
|
|
<table cellspacing="0" cellpadding="0">
|
|
<tbody>
|
|
<tr style="height: 56px;">
|
|
<td id="projectalign" style="padding-left: 0.5em;">
|
|
<div id="projectname">GBDK 2020 Docs
|
|
</div>
|
|
<div id="projectbrief">API Documentation for GBDK 2020</div>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div>
|
|
<!-- end header part -->
|
|
<!-- Generated by Doxygen 1.8.20 -->
|
|
<script type="text/javascript">
|
|
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
|
|
var searchBox = new SearchBox("searchBox", "search",false,'Search');
|
|
/* @license-end */
|
|
</script>
|
|
<script type="text/javascript" src="menudata.js"></script>
|
|
<script type="text/javascript" src="menu.js"></script>
|
|
<script type="text/javascript">
|
|
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
|
|
$(function() {
|
|
initMenu('',true,false,'search.php','Search');
|
|
$(document).ready(function() { init_search(); });
|
|
});
|
|
/* @license-end */</script>
|
|
<div id="main-nav"></div>
|
|
</div><!-- top -->
|
|
<div id="side-nav" class="ui-resizable side-nav-resizable">
|
|
<div id="nav-tree">
|
|
<div id="nav-tree-contents">
|
|
<div id="nav-sync" class="sync"></div>
|
|
</div>
|
|
</div>
|
|
<div id="splitbar" style="-moz-user-select:none;"
|
|
class="ui-resizable-handle">
|
|
</div>
|
|
</div>
|
|
<script type="text/javascript">
|
|
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
|
|
$(document).ready(function(){initNavTree('rand_8h.html',''); initResizable(); });
|
|
/* @license-end */
|
|
</script>
|
|
<div id="doc-content">
|
|
<!-- window showing the filter options -->
|
|
<div id="MSearchSelectWindow"
|
|
onmouseover="return searchBox.OnSearchSelectShow()"
|
|
onmouseout="return searchBox.OnSearchSelectHide()"
|
|
onkeydown="return searchBox.OnSearchSelectKey(event)">
|
|
</div>
|
|
|
|
<!-- iframe showing the search results (closed by default) -->
|
|
<div id="MSearchResultsWindow">
|
|
<iframe src="javascript:void(0)" frameborder="0"
|
|
name="MSearchResults" id="MSearchResults">
|
|
</iframe>
|
|
</div>
|
|
|
|
<div class="header">
|
|
<div class="summary">
|
|
<a href="#func-members">Functions</a> </div>
|
|
<div class="headertitle">
|
|
<div class="title">rand.h File Reference</div> </div>
|
|
</div><!--header-->
|
|
<div class="contents">
|
|
<div class="textblock"><code>#include <<a class="el" href="types_8h_source.html">types.h</a>></code><br />
|
|
<code>#include <<a class="el" href="stdint_8h_source.html">stdint.h</a>></code><br />
|
|
</div>
|
|
<p><a href="rand_8h_source.html">Go to the source code of this file.</a></p>
|
|
<table class="memberdecls">
|
|
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
|
|
Functions</h2></td></tr>
|
|
<tr class="memitem:a964538799843c0ba5bd01151ef7e2640"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="rand_8h.html#a964538799843c0ba5bd01151ef7e2640">initrand</a> (<a class="el" href="stdint_8h.html#adf4d876453337156dde61095e1f20223">uint16_t</a> seed) <a class="el" href="asm_2types_8h.html#a0971918860055db2e50dacea4da8f3bc">OLDCALL</a></td></tr>
|
|
<tr class="separator:a964538799843c0ba5bd01151ef7e2640"><td class="memSeparator" colspan="2"> </td></tr>
|
|
<tr class="memitem:ad81c61515217f062f5872031a7761fef"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdint_8h.html#aef44329758059c91c76d334e8fc09700">int8_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="rand_8h.html#ad81c61515217f062f5872031a7761fef">rand</a> () <a class="el" href="asm_2types_8h.html#a0971918860055db2e50dacea4da8f3bc">OLDCALL</a></td></tr>
|
|
<tr class="separator:ad81c61515217f062f5872031a7761fef"><td class="memSeparator" colspan="2"> </td></tr>
|
|
<tr class="memitem:ac659150eb39aae2f523bef6554b19b77"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdint_8h.html#adf4d876453337156dde61095e1f20223">uint16_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="rand_8h.html#ac659150eb39aae2f523bef6554b19b77">randw</a> () <a class="el" href="asm_2types_8h.html#a0971918860055db2e50dacea4da8f3bc">OLDCALL</a></td></tr>
|
|
<tr class="separator:ac659150eb39aae2f523bef6554b19b77"><td class="memSeparator" colspan="2"> </td></tr>
|
|
<tr class="memitem:a333400f85febd7e1360835955103db8b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="rand_8h.html#a333400f85febd7e1360835955103db8b">initarand</a> (<a class="el" href="stdint_8h.html#adf4d876453337156dde61095e1f20223">uint16_t</a> seed) <a class="el" href="asm_2types_8h.html#a0971918860055db2e50dacea4da8f3bc">OLDCALL</a></td></tr>
|
|
<tr class="separator:a333400f85febd7e1360835955103db8b"><td class="memSeparator" colspan="2"> </td></tr>
|
|
<tr class="memitem:ac3154758c17a5960a730a0a7c0fa7b0b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdint_8h.html#aef44329758059c91c76d334e8fc09700">int8_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="rand_8h.html#ac3154758c17a5960a730a0a7c0fa7b0b">arand</a> () <a class="el" href="asm_2types_8h.html#a0971918860055db2e50dacea4da8f3bc">OLDCALL</a></td></tr>
|
|
<tr class="separator:ac3154758c17a5960a730a0a7c0fa7b0b"><td class="memSeparator" colspan="2"> </td></tr>
|
|
</table>
|
|
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
|
|
<div class="textblock"><p>Random generator using the linear congruential method</p>
|
|
<dl class="section author"><dt>Author</dt><dd>Luc Van den Borre </dd></dl>
|
|
</div><h2 class="groupheader">Function Documentation</h2>
|
|
<a id="a964538799843c0ba5bd01151ef7e2640"></a>
|
|
<h2 class="memtitle"><span class="permalink"><a href="#a964538799843c0ba5bd01151ef7e2640">◆ </a></span>initrand()</h2>
|
|
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">void initrand </td>
|
|
<td>(</td>
|
|
<td class="paramtype"><a class="el" href="stdint_8h.html#adf4d876453337156dde61095e1f20223">uint16_t</a> </td>
|
|
<td class="paramname"><em>seed</em></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>Initalise the pseudo-random number generator.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">seed</td><td>The value for initializing the random number generator.</td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<p>The seed should be different each time, otherwise the same pseudo-random sequence will be generated.</p>
|
|
<p>The DIV Register (<a class="el" href="gb_2hardware_8h.html#afa1e18e47bf68ce68d7807fff6edf16b">DIV_REG</a>) is sometimes used as a seed, particularly if read at some variable point in time (such as when the player presses a button).</p>
|
|
<p>Only needs to be called once to initialize, buy may be called again to re-initialize with the same or a different seed. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="rand_8h.html#ad81c61515217f062f5872031a7761fef">rand()</a>, <a class="el" href="rand_8h.html#ac659150eb39aae2f523bef6554b19b77">randw()</a> </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a id="ad81c61515217f062f5872031a7761fef"></a>
|
|
<h2 class="memtitle"><span class="permalink"><a href="#ad81c61515217f062f5872031a7761fef">◆ </a></span>rand()</h2>
|
|
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname"><a class="el" href="stdint_8h.html#aef44329758059c91c76d334e8fc09700">int8_t</a> rand </td>
|
|
<td>(</td>
|
|
<td class="paramname"></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>Returns a random byte (8 bit) value.</p>
|
|
<p><a class="el" href="rand_8h.html#a964538799843c0ba5bd01151ef7e2640">initrand()</a> should be used to initialize the random number generator before using <a class="el" href="rand_8h.html#ad81c61515217f062f5872031a7761fef">rand()</a> </p>
|
|
|
|
</div>
|
|
</div>
|
|
<a id="ac659150eb39aae2f523bef6554b19b77"></a>
|
|
<h2 class="memtitle"><span class="permalink"><a href="#ac659150eb39aae2f523bef6554b19b77">◆ </a></span>randw()</h2>
|
|
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname"><a class="el" href="stdint_8h.html#adf4d876453337156dde61095e1f20223">uint16_t</a> randw </td>
|
|
<td>(</td>
|
|
<td class="paramname"></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>Returns a random word (16 bit) value.</p>
|
|
<p><a class="el" href="rand_8h.html#a964538799843c0ba5bd01151ef7e2640">initrand()</a> should be used to initialize the random number generator before using <a class="el" href="rand_8h.html#ad81c61515217f062f5872031a7761fef">rand()</a> </p>
|
|
|
|
</div>
|
|
</div>
|
|
<a id="a333400f85febd7e1360835955103db8b"></a>
|
|
<h2 class="memtitle"><span class="permalink"><a href="#a333400f85febd7e1360835955103db8b">◆ </a></span>initarand()</h2>
|
|
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">void initarand </td>
|
|
<td>(</td>
|
|
<td class="paramtype"><a class="el" href="stdint_8h.html#adf4d876453337156dde61095e1f20223">uint16_t</a> </td>
|
|
<td class="paramname"><em>seed</em></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>Random generator using the linear lagged additive method</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">seed</td><td>The value for initializing the random number generator.</td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<p>Note: <a class="el" href="rand_8h.html#a333400f85febd7e1360835955103db8b">initarand()</a> calls <a class="el" href="rand_8h.html#a964538799843c0ba5bd01151ef7e2640">initrand()</a> with the same seed value, and uses <a class="el" href="rand_8h.html#ad81c61515217f062f5872031a7761fef">rand()</a> to initialize the random generator.</p>
|
|
<dl class="section see"><dt>See also</dt><dd><a class="el" href="rand_8h.html#a964538799843c0ba5bd01151ef7e2640">initrand()</a> for suggestions about seed values, <a class="el" href="rand_8h.html#ac3154758c17a5960a730a0a7c0fa7b0b">arand()</a> </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a id="ac3154758c17a5960a730a0a7c0fa7b0b"></a>
|
|
<h2 class="memtitle"><span class="permalink"><a href="#ac3154758c17a5960a730a0a7c0fa7b0b">◆ </a></span>arand()</h2>
|
|
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname"><a class="el" href="stdint_8h.html#aef44329758059c91c76d334e8fc09700">int8_t</a> arand </td>
|
|
<td>(</td>
|
|
<td class="paramname"></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>Returns a random number generated with the linear lagged additive method.</p>
|
|
<p><a class="el" href="rand_8h.html#a333400f85febd7e1360835955103db8b">initarand()</a> should be used to initialize the random number generator before using <a class="el" href="rand_8h.html#ac3154758c17a5960a730a0a7c0fa7b0b">arand()</a> </p>
|
|
|
|
</div>
|
|
</div>
|
|
</div><!-- contents -->
|
|
</div><!-- doc-content -->
|
|
<!-- HTML footer for doxygen 1.8.14-->
|
|
<!-- start footer part -->
|
|
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
|
|
</div>
|
|
</body>
|
|
</html>
|