File: el_tan.html

package info (click to toggle)
basic256 1.1.4.0-2
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 24,460 kB
  • sloc: cpp: 10,148; yacc: 3,023; java: 1,091; lex: 1,051; sh: 117; xml: 33; makefile: 15
file content (99 lines) | stat: -rw-r--r-- 4,391 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
<!DOCTYPE html>
<html lang="en" dir="ltr" class="no-js">
<head>
    <meta charset="utf-8" />
    <title>el:tan [BASIC 256 - Language Documentation]</title>
<link rel="stylesheet" type="text/css" href="lib/exe/cssc171c1dfe8519125bb40a349172b001a.css"/>
    </head>
<body>
    <div id="dokuwiki__site"><div id="dokuwiki__top" class="site dokuwiki mode_show tpl_dokuwiki     ">
<div id="dokuwiki__header"><div class="pad group">
    <div class="headings group">
        <h1><a href="start.html"  accesskey="h" title="[H]"><img src="lib/tpl/dokuwiki/images/logo.png" width="64" height="64" alt="" /> <span>BASIC 256 - Language Documentation</span></a></h1>
            </div>
    </div>
            <div class="breadcrumbs">
                            <div class="youarehere"><span class="bchead">You are here: </span><span class="home"><bdi><a href="start.html" class="wikilink1" title="start">start</a></bdi></span> » <bdi><a href="el_start.html" class="wikilink1" title="el:start">el</a></bdi> » <bdi><span class="curid"><a href="el_tan.html" class="wikilink1" title="el:tan">tan</a></span></bdi></div>
                    </div>
    <hr class="a11y" />
</div></div>
        <div class="wrapper group">
            <div id="dokuwiki__content"><div class="pad group">
                <div class="pageId"><span>el:tan</span></div>
                <div class="page group">
<div id="dw__toc">
<h3 class="toggle">Table of Contents</h3>
<div>
<ul class="toc">
<li class="level2"><div class="li"><a href="el_tan.html#tan">Tan</a></div>
<ul class="toc">
<li class="level3"><div class="li"><a href="el_tan.html#format">Format</a></div></li>
<li class="level3"><div class="li"><a href="el_tan.html#description">Description</a></div></li>
<li class="level3"><div class="li"><a href="el_tan.html#note">Note</a></div></li>
<li class="level3"><div class="li"><a href="el_tan.html#see_also">See Also</a></div></li>
<li class="level3"><div class="li"><a href="el_tan.html#example">Example</a></div></li>
</ul></li>
</ul>
</div>
</div>
<h2 class="sectionedit1" id="tan">Tan</h2>
<div class="level2">
</div>
<h3 class="sectionedit2" id="format">Format</h3>
<div class="level3">
<p>
<strong>tan</strong> ( <em>expression</em> )
</p>
</div>
<h3 class="sectionedit3" id="description">Description</h3>
<div class="level3">
<p>
Computes the tangent of <em>expression</em>. <em>Expression</em> must be in radians.
</p>
</div>
<h3 class="sectionedit4" id="note">Note</h3>
<div class="level3">
<p>
The tan function does not produce an exact result.
</p>
</div>
<h3 class="sectionedit5" id="see_also">See Also</h3>
<div class="level3">
<p>
<a href="el_acos.html" class="wikilink1" title="el:acos">Acos</a>, <a href="el_asin.html" class="wikilink1" title="el:asin">Asin</a>, <a href="el_atan.html" class="wikilink1" title="el:atan">Atan</a>, <a href="el_sin.html" class="wikilink1" title="el:sin">Sin</a>, <a href="el_cos.html" class="wikilink1" title="el:cos">Cos</a>, <a href="el_degrees.html" class="wikilink1" title="el:degrees">Degrees</a>, <a href="el_radians.html" class="wikilink1" title="el:radians">Radians</a>
</p>
</div>
<h3 class="sectionedit6" id="example">Example</h3>
<div class="level3">
<pre class="code">clg
color black
# draw a line across the graphic output
line 0,150,300,150
# where do we start
lastx = 0
lasty = tan(0) * 50 + 150
# now step across the line and draw
for x = 0 to 300 step 5
   angle = x / 300 * 2 * pi
   y = tan(angle) * 50 + 150
   line lastx, lasty, x, y
   lastx = x
   lasty = y
next x</pre>
<p>
Draws
<a href="http://doc.basic256.org/lib/exe/detail.php?id=el_tan&amp;media=el:tan.jpg" class="media wikilink2" title="el:tan.jpg"><img src="lib/exe/en_tan.jpg" class="media" title="tan.jpg" alt="tan.jpg" /></a>
</p>
</div>
                                    </div>
                <div class="docInfo"><bdi>el/tan.txt</bdi> · Last modified: 2014/01/11 23:26 (external edit)</div>
                            </div></div>
            <hr class="a11y" />
        </div>
<div id="dokuwiki__footer"><div class="pad">
    <div class="license">Except where otherwise noted, content on this wiki is licensed under the following license: <bdi><a href="http://creativecommons.org/licenses/by-sa/3.0/" rel="license" class="urlextern">CC Attribution-Share Alike 3.0 Unported</a></bdi></div>
</div></div>
    </div></div>
    <div id="screen__mode" class="no"></div>
</body>
</html>