/usr/share/doc/opencl-1.2-html-doc/scalarDataTypes.html is in opencl-1.2-html-doc 1.0~svn33624-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd">
<!-- saved from url=(0013)about:internet -->
<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" xmlns:xlink="http://www.w3.org/1999/xlink" pref:renderer="mathplayer-dl">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style xmlns="" type="text/css">
/* This style sets a margin around the entire page */
html, body {
margin: 10px;
}
p {
font: normal 16px verdana, sans-serif;
margin: 0;
padding-bottom:12px;
}
h1 {
font: bold 25px verdana, sans-serif;
margin-top: 0;
margin-bottom: 3px;
padding-top: 0;
padding-bottom: 0;
}
h2 {
font: bold 19px verdana, sans-serif;
margin-top: 28px;
margin-bottom: 3px;
padding-top: 0;
padding-bottom: 0;
}
h3 {
font: bold 19px verdana, sans-serif !important;
margin-top: 28px;
margin-bottom: 3px;
padding-top: 0;
padding-bottom: 0;
}
li {
font: normal 16px verdana, sans-serif;
margin-top: 0;
margin-bottom: 18px;
padding-top: 0;
padding-bottom: 0;
}
.pdparam {
font: italic 16px verdana, sans-serif;
}
.term {
font: italic 16px verdana, sans-serif;
font-weight: normal;
}
.type {
font: normal 16px verdana, sans-serif !important;
}
.parameter {
font-style: italic;
}
a:link, a:visited {
color: blue;
text-decoration: none;
font: normal 16px;
}
a:hover {
background-color: #FFFF99;
font: normal 16px;
}
div.funcsynopsis {
text-align: left;
background-color: #e6e6e6;
font: normal 16px verdana, sans-serif;
padding-top: 10px;
padding-bottom: 10px;
}
div.funcsynopsis table {
border-collapse: separate;
font: normal 16px verdana, sans-serif;
}
div.funcsynopsis td {
background-color: #e6e6e6;
border: 0 solid #000;
padding: 1px;
font: normal 16px verdana, sans-serif;
}
div.refsect1 {
font-family: verdana, sans-serif;
font-size: 16px;
}
code.constant {
font: normal 16px courier new, monospace !important;
}
span.errorname {
font: normal 16px verdana, sans-serif !important;
}
code.function {
font: bold 16px verdana, sans-serif !important;
}
b.fsfunc {
font: bold 16px verdana, sans-serif !important;
}
code.varname {
font: italic 16px verdana, sans-serif;
}
code.replaceable {
font: italic 16px courier new, monospace;
}
code.funcdef {
font: normal 16px verdana, sans-serif !important;
}
.citerefentry {
font: normal 16px verdana, sans-serif !important;
}
.parameter {
font-style: italic;
}
code.fsfunc {
font: normal 16px verdana, sans-serif !important;
}
/* PARAMETER: This style controls spacing between the terms in Parameter section */
dt {
margin-top: 15px;
}
/* TABLES: These styles apply to all tables OTHER than the Synopsis and Example tables */
div.refsect1 table {
width: 100%;
margin-top: 10px;
background-color: #FFF;
border-collapse: collapse;
border-color: #000;
border-width: 1px;
font: normal 16px verdana, sans-serif;
}
div.refsect1 th {
border-collapse: collapse;
border-color: #000;
border-width: 1px;
font: bold 16px verdana, sans-serif;
}
div.refsect1 td {
background-color: #FFF;
padding: 5px;
vertical-align: text-top;
border-collapse: collapse;
border-color: #000;
border-width: 1px;
font: normal 16px verdana, sans-serif;
}
div.refsect1 p{
font: normal 16px verdana, sans-serif;
margin-top: 8px;
margin-bottom: 8px;
padding-top: 0;
padding-bottom: 0;
}
/* EXAMPLE: These styles apply only to the Example section */
div.refsect2 {
font: normal 16px courier new, monospace !important;
}
div.refsect2 table {
margin-top: 0;
background-color: #e6e6e6;
width: 100%;
border: 0 solid #000;
padding: 2px;
font: normal 16px courier new, monospace !important;
}
div.refsect2 td {
background-color: #e6e6e6;
font: normal 16px courier new, monospace !important;
white-space:pre;
}
/* COPYRIGHT: This style formats the text of the copyright statement at the bottom of the page */
div.refsect3 {
font: normal 11px verdana, sans-serif;
margin-top: 50px;
margin-bottom: 20px;
padding-top: 0;
padding-bottom: 0;
}
</style>
<title>Scalar Data Types</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1" />
<meta name="keywords" content="Scalar Data Types" />
</head>
<body>
<div class="refentry">
<a id="idm1"></a>
<div class="titlepage"></div>
<div xmlns="" class="refnamediv">
<a xmlns="http://www.w3.org/1999/xhtml" id="Built-inScalarDataTypes"></a>
<h1>Scalar Data Types</h1>
<p>
Built-in scalar data types.
</p>
</div>
<div class="refsect1">
<a id="description"></a>
<h2>Description</h2>
<p>
These are the data types available in the OpenCL C programming language used to create
kernels that are executed on OpenCL device(s). The OpenCL C programming language (also
referred to as OpenCL C) is based on the ISO/IEC 9899:1999 C language specification
(a.k.a. C99 specification) with specific extensions and restrictions. Please refer
to the ISO/IEC 9899:1999 specification for a detailed description of the language
grammar. This section describes modifications and restrictions to ISO/IEC 9899:1999
supported in OpenCL C.
</p>
<p>
Most built-in scalar data types are also declared as appropriate types in the OpenCL API
(and header files) that can be used by an application. The following table describes
the built-in scalar data type in the OpenCL C programming language and the corresponding
data type available to the application:
</p>
<div class="informaltable">
<table class="informaltable" border="1">
<colgroup>
<col align="left" class="col1" />
<col align="left" class="col2" />
<col align="left" class="col3" />
</colgroup>
<thead>
<tr>
<th align="left">Type in OpenCL C Language</th>
<th align="left">Description</th>
<th align="left">API type for application</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left"> <span class="type">bool</span> </td>
<td align="left">
A conditional data type which is either <code class="varname">true</code> or
<code class="varname">false</code>. The value <code class="varname">true</code> expands
to the integer constant 1 and the value <code class="varname">false</code>
expands to the integer constant 0. When any scalar value is converted
to bool, the result is 0 if the value compares equal to 0; otherwise,
the result is 1.
</td>
<td align="left"> n/a </td>
</tr>
<tr>
<td align="left"> <span class="type">char</span> </td>
<td align="left"> A signed two's complement 8-bit integer. </td>
<td align="left"> <span class="type">cl_char</span> </td>
</tr>
<tr>
<td align="left">
<div class="literallayout"><p><span class="type">unsigned char</span>,<br />
<span class="type">uchar</span></p></div>
</td>
<td align="left"> An unsigned 8-bit integer. </td>
<td align="left"> <span class="type">cl_uchar</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">short</span> </td>
<td align="left"> A signed two's complement 16-bit integer. </td>
<td align="left"> <span class="type">cl_short</span> </td>
</tr>
<tr>
<td align="left">
<div class="literallayout"><p><span class="type">unsigned short</span>,<br />
<span class="type">ushort</span></p></div>
</td>
<td align="left"> An unsigned 16-bit integer. </td>
<td align="left"> <span class="type">cl_ushort</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">int</span> </td>
<td align="left"> A signed two's complement 32-bit integer. </td>
<td align="left"> <span class="type">cl_int</span> </td>
</tr>
<tr>
<td align="left">
<div class="literallayout"><p><span class="type">unsigned int</span>,<br />
<span class="type">uint</span></p></div>
</td>
<td align="left"> An unsigned 32-bit integer. </td>
<td align="left"> <span class="type">cl_uint</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">long</span> </td>
<td align="left"> A signed two's complement 64-bit integer. </td>
<td align="left"> <span class="type">cl_long</span> </td>
</tr>
<tr>
<td align="left">
<div class="literallayout"><p><span class="type">unsigned long</span>,<br />
<span class="type">ulong</span></p></div>
</td>
<td align="left"> An unsigned 64-bit integer. </td>
<td align="left"> <span class="type">cl_ulong</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">float</span> </td>
<td align="left">
A 32-bit floating point. The float data type must conform to the
IEEE 754 single precision storage format.
</td>
<td align="left"> <span class="type">cl_float</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">double</span> </td>
<td align="left">
A 64-bit floating point. The <span class="type">double</span> data type must conform to the
IEEE 754 double precision storage format. The <span class="type">double</span> scalar
type is an optional type that is supported if <code class="constant">CL_DEVICE_DOUBLE_FP_CONFIG</code>
for a device is not zero. See the table for <code class="varname">param_name</code> for
<a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a>
for details.
</td>
<td align="left"> <span class="type">cl_double</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">half</span> </td>
<td align="left">
A 16-bit float. The <span class="type">half</span> data type must conform to the IEEE 754-2008
half precision storage format.
</td>
<td align="left"> <span class="type">cl_half</span> </td>
</tr>
<tr>
<td align="left"> <span class="type">size_t</span> </td>
<td align="left">
The unsigned integer type of the result of the sizeof
operator. This is a 32-bit unsigned integer if <code class="constant">CL_DEVICE_ADDRESS_BITS</code>
defined in <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a>
is 32-bits and is a 64-bit unsigned integer if <code class="constant">CL_DEVICE_ADDRESS_BITS</code>
is 64-bits.
</td>
<td align="left"> n/a </td>
</tr>
<tr>
<td align="left"> <span class="type">ptrdiff_t</span> </td>
<td align="left">
A signed integer type that is the result of subtracting two pointers.
This is a 32-bit signed integer if <code class="constant">CL_DEVICE_ADDRESS_BITS</code> defined in
<a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a>
is 32-bits and is a 64-bit signed integer if <code class="constant">CL_DEVICE_ADDRESS_BITS</code>
is 64-bits.
</td>
<td align="left"> n/a </td>
</tr>
<tr>
<td align="left"> <span class="type">intptr_t</span> </td>
<td align="left">
A signed integer type with the property that any valid pointer to
<span class="type">void</span> can be converted to this type, then converted back
to pointer to <span class="type">void</span>, and the result will compare equal
to the original pointer. This is a 32-bit signed integer if
<code class="constant">CL_DEVICE_ADDRESS_BITS</code> defined in table 4.3 is
32-bits and is a 64-bit signed integer if <code class="constant">CL_DEVICE_ADDRESS_BITS</code>
is 64-bits.
</td>
<td align="left"> n/a </td>
</tr>
<tr>
<td align="left"> <span class="type">uintptr_t</span> </td>
<td align="left">
An unsigned integer type with the property that any valid pointer to
<span class="type">void</span> can be converted to this type, then converted back
to pointer to <span class="type">void</span>, and the result will compare equal to
the original pointer. This is a 32-bit signed integer if
<code class="constant">CL_DEVICE_ADDRESS_BITS</code> defined in table 4.3 is
32-bits and is a 64-bit signed integer if <code class="constant">CL_DEVICE_ADDRESS_BITS</code>
is 64-bits.
</td>
<td align="left"> n/a </td>
</tr>
<tr>
<td align="left"> <span class="type">void</span> </td>
<td align="left">
The <span class="type">void</span> type comprises an empty set of values; it is an
incomplete type that cannot be completed.
</td>
<td align="left"> <span class="type">void</span> </td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1">
<a id="optional"></a>
<h2>Optional Half Floating Point</h2>
<p>
The <span class="type">half</span> floating-point is supported as an optional
extension. An application that wants to use <span class="type">half</span>
and <span class="type">half<em class="replaceable"><code>n</code></em></span> will need to include the
<a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">#pragma OPENCL EXTENSION cl_khr_fp16
: enable</span></span></a> directive. This will extended the list of
built-in vector and scalar data types to include the following:
</p>
<p>
</p>
<div class="informaltable">
<table class="informaltable" border="1">
<colgroup>
<col align="left" class="col1" />
<col align="left" class="col2" />
<col align="left" class="col3" />
</colgroup>
<thead>
<tr>
<th align="left">Type in OpenCL Language</th>
<th align="left">Description</th>
<th align="left">API type for application</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">
<span class="type">half2</span>
</td>
<td align="left">A 2-component half-precision floating-point vector.</td>
<td align="left">
<span class="type">cl_half2</span>
</td>
</tr>
<tr>
<td align="left">
<span class="type">half3</span>
</td>
<td align="left">A 3-component half-precision floating-point vector.</td>
<td align="left">
<span class="type">cl_half3</span>
</td>
</tr>
<tr>
<td align="left">
<span class="type">half4</span>
</td>
<td align="left">A 4-component half-precision floating-point vector.</td>
<td align="left">
<span class="type">cl_half4</span>
</td>
</tr>
<tr>
<td align="left">
<span class="type">half8</span>
</td>
<td align="left">An 8-component half-precision floating-point vector.</td>
<td align="left">
<span class="type">cl_half8</span>
</td>
</tr>
<tr>
<td align="left">
<span class="type">half16</span>
</td>
<td align="left">A 16-component half-precision floating-point vector.</td>
<td align="left">
<span class="type">cl_half16</span>
</td>
</tr>
</tbody>
</table>
</div>
<p>
</p>
<p>
The relational, equality, logical and logical unary operators can be used with
<span class="type">half</span> scalar and <span class="type">half<em class="replaceable"><code>n</code></em></span>
vector types and shall produce a scalar <span class="type">int</span> and vector
<span class="type">short<em class="replaceable"><code>n</code></em></span> result respectively.
</p>
<p>
The OpenCL compiler accepts an h and H suffix on floating point literals, indicating
the literal is typed as a <span class="type">half</span>.
</p>
</div>
<div class="refsect1">
<a id="specification"></a>
<h2>Specification</h2>
<p>
<img src="pdficon_small1.gif" />
<a href="http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf#page=195" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="macroLimits.html"><span class="citerefentry"><span class="refentrytitle">Macros and Limits</span></span></a>,
<a class="citerefentry" href="vectorDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Vector Data Types</span></span></a>,
<a class="citerefentry" href="reservedDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Reserved Data Types</span></span></a>,
<a class="citerefentry" href="otherDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Other Data Types</span></span></a>,
<a class="citerefentry" href="abstractDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Abstract Data Types</span></span></a>,
<a class="citerefentry" href="enums.html"><span class="citerefentry"><span class="refentrytitle">Enumerated Data Types</span></span></a>,
<a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp16</span></span></a>,
<a class="citerefentry" href="cl_khr_fp64.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp64</span></span></a>
</p>
</div>
<div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.
</div>
</div>
</body>
</html>
|