<html lang="en"> <head> <title>Constants - Untitled</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Untitled"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Expressions.html#Expressions" title="Expressions"> <link rel="next" href="Symbolic-Constants.html#Symbolic-Constants" title="Symbolic Constants"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU linker LD (GNU Binutils) version 2.26. Copyright (C) 1991-2015 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 no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''.--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="Constants"></a> <p> Next: <a rel="next" accesskey="n" href="Symbolic-Constants.html#Symbolic-Constants">Symbolic Constants</a>, Up: <a rel="up" accesskey="u" href="Expressions.html#Expressions">Expressions</a> <hr> </div> <h4 class="subsection">3.10.1 Constants</h4> <p><a name="index-integer-notation-523"></a><a name="index-constants-in-linker-scripts-524"></a>All constants are integers. <p>As in C, the linker considers an integer beginning with ‘<samp><span class="samp">0</span></samp>’ to be octal, and an integer beginning with ‘<samp><span class="samp">0x</span></samp>’ or ‘<samp><span class="samp">0X</span></samp>’ to be hexadecimal. Alternatively the linker accepts suffixes of ‘<samp><span class="samp">h</span></samp>’ or ‘<samp><span class="samp">H</span></samp>’ for hexadecimal, ‘<samp><span class="samp">o</span></samp>’ or ‘<samp><span class="samp">O</span></samp>’ for octal, ‘<samp><span class="samp">b</span></samp>’ or ‘<samp><span class="samp">B</span></samp>’ for binary and ‘<samp><span class="samp">d</span></samp>’ or ‘<samp><span class="samp">D</span></samp>’ for decimal. Any integer value without a prefix or a suffix is considered to be decimal. <p><a name="index-scaled-integers-525"></a><a name="index-K-and-M-integer-suffixes-526"></a><a name="index-M-and-K-integer-suffixes-527"></a><a name="index-suffixes-for-integers-528"></a><a name="index-integer-suffixes-529"></a>In addition, you can use the suffixes <code>K</code> and <code>M</code> to scale a constant by <!-- TEXI2ROFF-KILL --> <!-- END TEXI2ROFF-KILL --> <code>1024</code> or <code>1024*1024</code> <!-- TEXI2ROFF-KILL --> <!-- END TEXI2ROFF-KILL --> respectively. For example, the following all refer to the same quantity: <pre class="smallexample"> _fourk_1 = 4K; _fourk_2 = 4096; _fourk_3 = 0x1000; _fourk_4 = 10000o; </pre> <p>Note - the <code>K</code> and <code>M</code> suffixes cannot be used in conjunction with the base suffixes mentioned above. </body></html>