/usr/share/gtk-doc/html/libgimpmath/libgimpmath-GimpMath.html is in libgimp2.0-doc 2.8.18-1+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GimpMath: GIMP Math Library Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GIMP Math Library Reference Manual">
<link rel="up" href="libgimpmath.html" title="Part I. GIMP Math Library">
<link rel="prev" href="libgimpmath.html" title="Part I. GIMP Math Library">
<link rel="next" href="libgimpmath-GimpMatrix.html" title="GimpMatrix">
<meta name="generator" content="GTK-Doc V1.25 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
<a href="#libgimpmath-GimpMath.description" class="shortcut">Description</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="libgimpmath.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="libgimpmath.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="libgimpmath-GimpMatrix.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="libgimpmath-GimpMath"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libgimpmath-GimpMath.top_of_page"></a>GimpMath</span></h2>
<p>GimpMath — Mathematical definitions and macros.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libgimpmath-GimpMath.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#RINT:CAPS" title="RINT()">RINT</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#ROUND:CAPS" title="ROUND()">ROUND</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#SQR:CAPS" title="SQR()">SQR</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#MAX255:CAPS" title="MAX255()">MAX255</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#CLAMP0255:CAPS" title="CLAMP0255()">CLAMP0255</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#gimp-deg-to-rad" title="gimp_deg_to_rad()">gimp_deg_to_rad</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libgimpmath-GimpMath.html#gimp-rad-to-deg" title="gimp_rad_to_deg()">gimp_rad_to_deg</a><span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libgimpmath-GimpMath.description"></a><h2>Description</h2>
<p>Mathematical definitions and macros for use both by the GIMP
application and plug-ins. These macros should be used rather than
the ones from <math.h> for enhanced portability.</p>
</div>
<div class="refsect1">
<a name="libgimpmath-GimpMath.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="RINT:CAPS"></a><h3>RINT()</h3>
<pre class="programlisting">#define RINT(x) rint(x)
</pre>
<p>This macro rounds its argument <em class="parameter"><code>x</code></em>
to an integer value in floating
point format. Use <a class="link" href="libgimpmath-GimpMath.html#RINT:CAPS" title="RINT()"><code class="function">RINT()</code></a> instead of <code class="function">rint()</code>.</p>
<div class="refsect3">
<a name="RINT.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>x</p></td>
<td class="parameter_description"><p>the value to be rounded</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ROUND:CAPS"></a><h3>ROUND()</h3>
<pre class="programlisting">#define ROUND(x) ((int) ((x) + 0.5))
</pre>
<p>This macro rounds its positive argument <em class="parameter"><code>x</code></em>
to the nearest integer.</p>
<div class="refsect3">
<a name="ROUND.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>x</p></td>
<td class="parameter_description"><p>the value to be rounded.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="SQR:CAPS"></a><h3>SQR()</h3>
<pre class="programlisting">#define SQR(x) ((x) * (x))
</pre>
<p>This macro squares its argument <em class="parameter"><code>x</code></em>
.</p>
<div class="refsect3">
<a name="SQR.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>x</p></td>
<td class="parameter_description"><p>the value to be squared.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="MAX255:CAPS"></a><h3>MAX255()</h3>
<pre class="programlisting">#define MAX255(a) ((a) | (((a) & 256) - (((a) & 256) >> 8)))
</pre>
<p>This macro limits it argument <em class="parameter"><code>a</code></em>
, an (0-511) int, to 255.</p>
<div class="refsect3">
<a name="MAX255.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>a</p></td>
<td class="parameter_description"><p>the value to be limited.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="CLAMP0255:CAPS"></a><h3>CLAMP0255()</h3>
<pre class="programlisting">#define CLAMP0255(a) CLAMP(a,0,255)
</pre>
<p>This macro clamps its argument <em class="parameter"><code>a</code></em>
, an int32-range int, between 0
and 255 inclusive.</p>
<div class="refsect3">
<a name="CLAMP0255.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>a</p></td>
<td class="parameter_description"><p>the value to be clamped.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-deg-to-rad"></a><h3>gimp_deg_to_rad()</h3>
<pre class="programlisting">#define gimp_deg_to_rad(angle) ((angle) * (2.0 * G_PI) / 360.0)
</pre>
<p>This macro converts its argument <em class="parameter"><code>angle</code></em>
from degree to radian.</p>
<div class="refsect3">
<a name="gimp-deg-to-rad.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>angle</p></td>
<td class="parameter_description"><p>the angle to be converted.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-rad-to-deg"></a><h3>gimp_rad_to_deg()</h3>
<pre class="programlisting">#define gimp_rad_to_deg(angle) ((angle) * 360.0 / (2.0 * G_PI))
</pre>
<p>This macro converts its argument <em class="parameter"><code>angle</code></em>
from radian to degree.</p>
<div class="refsect3">
<a name="gimp-rad-to-deg.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>angle</p></td>
<td class="parameter_description"><p>the angle to be converted.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="libgimpmath-GimpMath.other_details"></a><h2>Types and Values</h2>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.25</div>
</body>
</html>
|