<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>avr-libc: <errno.h>: System Errors</title> <link href="dox.css" rel="stylesheet" type="text/css"> </head> <body> <center> <table width="80%"> <tr> <td align="left"><a href="http://www.nongnu.org/avr-libc/">AVR Libc Home Page</a></td> <td align="center" colspan=4><img src="avrs.png" alt="AVRs" align="middle" border="0"></td> <td align="right"><a href="https://savannah.nongnu.org/projects/avr-libc/">AVR Libc Development Pages</a></td> </tr> <tr> <td align="center" width="13%"><a href="index.html">Main Page</a></td> <td align="center" width="13%"><a href="pages.html">User Manual</a></td> <td align="center" width="13%"><a href="modules.html">Library Reference</a></td> <td align="center" width="13%"><a href="FAQ.html">FAQ</a></td> <td align="center" width="13%"><a href="globals.html">Alphabetical Index</a></td> <td align="center" width="13%"><a href="group__demos.html">Example Projects</a></td> </tr> </table> </center> <hr width="80%"> <!-- Generated by Doxygen 1.6.1 --> <div class="contents"> <h1><errno.h>: System Errors</h1><table border="0" cellpadding="0" cellspacing="0"> <tr><td colspan="2"><h2>Defines</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__errno.html#ga5fe247e079b591a68e0fdbf7caec5b70">EDOM</a> 33</td></tr> <tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__errno.html#gaa1591a4f3a86360108de5b9ba34980ca">ERANGE</a> 34</td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <div class="fragment"><pre class="fragment"><span class="preprocessor"> #include <<a class="code" href="errno_8h.html">errno.h</a>></span> </pre></div><p>Some functions in the library set the global variable <code>errno</code> when an error occurs. The file, <code><<a class="el" href="errno_8h.html">errno.h</a>></code>, provides symbolic names for various error codes.</p> <dl class="warning"><dt><b>Warning:</b></dt><dd>The <code>errno</code> global variable is not safe to use in a threaded or multi-task system. A race condition can occur if a task is interrupted between the call which sets <code>error</code> and when the task examines <code>errno</code>. If another task changes <code>errno</code> during this time, the result will be incorrect for the interrupted task. </dd></dl> <hr/><h2>Define Documentation</h2> <a class="anchor" id="ga5fe247e079b591a68e0fdbf7caec5b70"></a><!-- doxytag: member="errno.h::EDOM" ref="ga5fe247e079b591a68e0fdbf7caec5b70" args="" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define EDOM 33</td> </tr> </table> </div> <div class="memdoc"> <p>Domain error. </p> </div> </div> <a class="anchor" id="gaa1591a4f3a86360108de5b9ba34980ca"></a><!-- doxytag: member="errno.h::ERANGE" ref="gaa1591a4f3a86360108de5b9ba34980ca" args="" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define ERANGE 34</td> </tr> </table> </div> <div class="memdoc"> <p>Range error. </p> </div> </div> </div> <hr width="80%"> <p><center>Automatically generated by Doxygen 1.6.1 on 30 Nov 2009.</center></p> </body> </html>