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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/cpp/Conditional-Syntax.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
Diffstat (limited to 'share/doc/cpp/Conditional-Syntax.html')
| -rw-r--r-- | share/doc/cpp/Conditional-Syntax.html | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/share/doc/cpp/Conditional-Syntax.html b/share/doc/cpp/Conditional-Syntax.html new file mode 100644 index 0000000..794acd6 --- /dev/null +++ b/share/doc/cpp/Conditional-Syntax.html @@ -0,0 +1,112 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1987-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation. A copy of +the license is included in the +section entitled "GNU Free Documentation License". + +This manual contains no Invariant Sections. The Front-Cover Texts are +(a) (see below), and the Back-Cover Texts are (b) (see below). + +(a) The FSF's Front-Cover Text is: + +A GNU Manual + +(b) The FSF's Back-Cover Text is: + +You have freedom to copy and modify this GNU Manual, like GNU + software. Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>The C Preprocessor: Conditional Syntax</title> + +<meta name="description" content="The C Preprocessor: Conditional Syntax"> +<meta name="keywords" content="The C Preprocessor: Conditional Syntax"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Index-of-Directives.html#Index-of-Directives" rel="index" title="Index of Directives"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Conditionals.html#Conditionals" rel="up" title="Conditionals"> +<link href="Ifdef.html#Ifdef" rel="next" title="Ifdef"> +<link href="Conditional-Uses.html#Conditional-Uses" rel="previous" title="Conditional Uses"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Conditional-Syntax"></a> +<div class="header"> +<p> +Next: <a href="Deleted-Code.html#Deleted-Code" accesskey="n" rel="next">Deleted Code</a>, Previous: <a href="Conditional-Uses.html#Conditional-Uses" accesskey="p" rel="previous">Conditional Uses</a>, Up: <a href="Conditionals.html#Conditionals" accesskey="u" rel="up">Conditionals</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index-of-Directives.html#Index-of-Directives" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Conditional-Syntax-1"></a> +<h3 class="section">4.2 Conditional Syntax</h3> + +<a name="index-_0023if"></a> +<p>A conditional in the C preprocessor begins with a <em>conditional +directive</em>: ‘<samp>#if</samp>’, ‘<samp>#ifdef</samp>’ or ‘<samp>#ifndef</samp>’. +</p> +<table class="menu" border="0" cellspacing="0"> +<tr><td align="left" valign="top">• <a href="Ifdef.html#Ifdef" accesskey="1">Ifdef</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="If.html#If" accesskey="2">If</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Defined.html#Defined" accesskey="3">Defined</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Else.html#Else" accesskey="4">Else</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Elif.html#Elif" accesskey="5">Elif</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_005f_005fhas_005fattribute.html#g_t_005f_005fhas_005fattribute" accesskey="6"><code>__has_attribute</code></a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_005f_005fhas_005fcpp_005fattribute.html#g_t_005f_005fhas_005fcpp_005fattribute" accesskey="7"><code>__has_cpp_attribute</code></a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_005f_005fhas_005fc_005fattribute.html#g_t_005f_005fhas_005fc_005fattribute" accesskey="8"><code>__has_c_attribute</code></a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_005f_005fhas_005fbuiltin.html#g_t_005f_005fhas_005fbuiltin" accesskey="9"><code>__has_builtin</code></a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_005f_005fhas_005finclude.html#g_t_005f_005fhas_005finclude"><code>__has_include</code></a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +</table> + + + + +</body> +</html> |