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diff --git a/share/doc/gcc/Binary-constants.html b/share/doc/gcc/Binary-constants.html new file mode 100644 index 0000000..fbf4aa8 --- /dev/null +++ b/share/doc/gcc/Binary-constants.html @@ -0,0 +1,105 @@ +<!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): Binary constants</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): Binary constants"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): Binary constants"> +<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-Extensions.html#C-Extensions" rel="up" title="C Extensions"> +<link href="C_002b_002b-Extensions.html#C_002b_002b-Extensions" rel="next" title="C++ Extensions"> +<link href="C_002b_002b98-Thread_002dLocal-Edits.html#C_002b_002b98-Thread_002dLocal-Edits" rel="previous" title="C++98 Thread-Local Edits"> +<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="Binary-constants"></a> +<div class="header"> +<p> +Previous: <a href="Thread_002dLocal.html#Thread_002dLocal" accesskey="p" rel="previous">Thread-Local</a>, Up: <a href="C-Extensions.html#C-Extensions" accesskey="u" rel="up">C Extensions</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="Binary-Constants-using-the-0b-Prefix"></a> +<h3 class="section">6.65 Binary Constants using the ‘<samp>0b</samp>’ Prefix</h3> +<a name="index-Binary-constants-using-the-0b-prefix"></a> + +<p>Integer constants can be written as binary constants, consisting of a +sequence of ‘<samp>0</samp>’ and ‘<samp>1</samp>’ digits, prefixed by ‘<samp>0b</samp>’ or +‘<samp>0B</samp>’. This is particularly useful in environments that operate a +lot on the bit level (like microcontrollers). +</p> +<p>The following statements are identical: +</p> +<div class="smallexample"> +<pre class="smallexample">i = 42; +i = 0x2a; +i = 052; +i = 0b101010; +</pre></div> + +<p>The type of these constants follows the same rules as for octal or +hexadecimal integer constants, so suffixes like ‘<samp>L</samp>’ or ‘<samp>UL</samp>’ +can be applied. +</p> + + + +</body> +</html> |