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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/gcc/Characters-implementation.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
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diff --git a/share/doc/gcc/Characters-implementation.html b/share/doc/gcc/Characters-implementation.html new file mode 100644 index 0000000..7dfe5ec --- /dev/null +++ b/share/doc/gcc/Characters-implementation.html @@ -0,0 +1,184 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This file documents the use of the GNU compilers. + +Copyright (C) 1988-2023 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; with the +Invariant Sections being "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). A copy of the license is included in the section entitled +"GNU Free Documentation License". + +(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>Using the GNU Compiler Collection (GCC): Characters implementation</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): Characters implementation"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): Characters implementation"> +<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="Indices.html#Indices" rel="index" title="Indices"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="C-Implementation.html#C-Implementation" rel="up" title="C Implementation"> +<link href="Integers-implementation.html#Integers-implementation" rel="next" title="Integers implementation"> +<link href="Identifiers-implementation.html#Identifiers-implementation" rel="previous" title="Identifiers implementation"> +<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_US" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Characters-implementation"></a> +<div class="header"> +<p> +Next: <a href="Integers-implementation.html#Integers-implementation" accesskey="n" rel="next">Integers implementation</a>, Previous: <a href="Identifiers-implementation.html#Identifiers-implementation" accesskey="p" rel="previous">Identifiers implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Characters"></a> +<h3 class="section">4.4 Characters</h3> + +<ul> +<li> <cite>The number of bits in a byte (C90 3.4, C99 and C11 3.6).</cite> + +<p>Determined by ABI. +</p> +</li><li> <cite>The values of the members of the execution character set (C90, +C99 and C11 5.2.1).</cite> + +<p>Determined by ABI. +</p> +</li><li> <cite>The unique value of the member of the execution character set produced +for each of the standard alphabetic escape sequences (C90, C99 and C11 +5.2.2).</cite> + +<p>Determined by ABI. +</p> +</li><li> <cite>The value of a <code>char</code> object into which has been stored any +character other than a member of the basic execution character set +(C90 6.1.2.5, C99 and C11 6.2.5).</cite> + +<p>Determined by ABI. +</p> +</li><li> <cite>Which of <code>signed char</code> or <code>unsigned char</code> has the same +range, representation, and behavior as “plain” <code>char</code> (C90 +6.1.2.5, C90 6.2.1.1, C99 and C11 6.2.5, C99 and C11 6.3.1.1).</cite> + +<a name="index-fsigned_002dchar-1"></a> +<a name="index-funsigned_002dchar-1"></a> +<p>Determined by ABI. The options <samp>-funsigned-char</samp> and +<samp>-fsigned-char</samp> change the default. See <a href="C-Dialect-Options.html#C-Dialect-Options">Options Controlling C Dialect</a>. +</p> +</li><li> <cite>The mapping of members of the source character set (in character +constants and string literals) to members of the execution character +set (C90 6.1.3.4, C99 and C11 6.4.4.4, C90, C99 and C11 5.1.1.2).</cite> + +<p>Determined by ABI. +</p> +</li><li> <cite>The value of an integer character constant containing more than one +character or containing a character or escape sequence that does not map +to a single-byte execution character (C90 6.1.3.4, C99 and C11 6.4.4.4).</cite> + +<p>See <a href="http://gcc.gnu.org/onlinedocs/cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined +behavior</a> in <cite>The C Preprocessor</cite>. +</p> +</li><li> <cite>The value of a wide character constant containing more than one +multibyte character or a single multibyte character that maps to +multiple members of the extended execution character set, or +containing a multibyte character or escape sequence not represented in +the extended execution character set (C90 6.1.3.4, C99 and C11 +6.4.4.4).</cite> + +<p>See <a href="http://gcc.gnu.org/onlinedocs/cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined +behavior</a> in <cite>The C Preprocessor</cite>. +</p> +</li><li> <cite>The current locale used to convert a wide character constant consisting +of a single multibyte character that maps to a member of the extended +execution character set into a corresponding wide character code (C90 +6.1.3.4, C99 and C11 6.4.4.4).</cite> + +<p>See <a href="http://gcc.gnu.org/onlinedocs/cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined +behavior</a> in <cite>The C Preprocessor</cite>. +</p> +</li><li> <cite>Whether differently-prefixed wide string literal tokens can be +concatenated and, if so, the treatment of the resulting multibyte +character sequence (C11 6.4.5).</cite> + +<p>Such tokens may not be concatenated. +</p> +</li><li> <cite>The current locale used to convert a wide string literal into +corresponding wide character codes (C90 6.1.4, C99 and C11 6.4.5).</cite> + +<p>See <a href="http://gcc.gnu.org/onlinedocs/cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined +behavior</a> in <cite>The C Preprocessor</cite>. +</p> +</li><li> <cite>The value of a string literal containing a multibyte character or escape +sequence not represented in the execution character set (C90 6.1.4, +C99 and C11 6.4.5).</cite> + +<p>See <a href="http://gcc.gnu.org/onlinedocs/cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined +behavior</a> in <cite>The C Preprocessor</cite>. +</p> +</li><li> <cite>The encoding of any of <code>wchar_t</code>, <code>char16_t</code>, and +<code>char32_t</code> where the corresponding standard encoding macro +(<code>__STDC_ISO_10646__</code>, <code>__STDC_UTF_16__</code>, or +<code>__STDC_UTF_32__</code>) is not defined (C11 6.10.8.2).</cite> + +<p>See <a href="http://gcc.gnu.org/onlinedocs/cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined +behavior</a> in <cite>The C Preprocessor</cite>. <code>char16_t</code> and +<code>char32_t</code> literals are always encoded in UTF-16 and UTF-32 +respectively. +</p> +</li></ul> + +<hr> +<div class="header"> +<p> +Next: <a href="Integers-implementation.html#Integers-implementation" accesskey="n" rel="next">Integers implementation</a>, Previous: <a href="Identifiers-implementation.html#Identifiers-implementation" accesskey="p" rel="previous">Identifiers implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |