1<!--$Id: db_get_byteswapped.so,v 10.24 2007/09/21 20:06:01 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB: DB->get_byteswapped</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<table width="100%"><tr valign=top> 12<td> 13<b>DB->get_byteswapped</b> 14</td> 15<td align=right> 16<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a> 17<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td> 18</tr></table> 19<hr size=1 noshade> 20<tt> 21<b><pre> 22#include <db.h> 23<p> 24int 25DB->get_byteswapped(DB *db, int *isswapped); 26</pre></b> 27<hr size=1 noshade> 28<b>Description: DB->get_byteswapped</b> 29<p>The DB->get_byteswapped method returns if the underlying database 30files were created on an architecture of the same byte order as the 31current one, or if they were not (that is, big-endian on a little-endian 32machine, or vice versa). This information may be used to determine 33whether application data needs to be adjusted for this architecture or 34not.</p> 35<p>The DB->get_byteswapped method may not be called before the <a href="../api_c/db_open.html">DB->open</a> method is called.</p> 36<p>The DB->get_byteswapped method 37returns a non-zero error value on failure 38and 0 on success. 39</p> 40<b>Parameters</b> <br> 41 <b>isswapped</b><ul compact><li>If the underlying database files were created on an architecture of the 42same byte order as the current one. 0 is stored into the memory location 43referenced by <b>isswapped</b>. If the underlying database files were 44created on an architecture of a different byte order as the current one, 451 is stored into the memory location referenced by <b>isswapped</b>.</ul> 46<br> 47<br><b>Errors</b> 48<p>The DB->get_byteswapped method 49may fail and return one of the following non-zero errors:</p> 50<br> 51<b>EINVAL</b><ul compact><li>If the method was called before <a href="../api_c/db_open.html">DB->open</a> was called; or if an 52invalid flag value or parameter was specified.</ul> 53<br> 54<hr size=1 noshade> 55<br><b>Class</b> 56<a href="../api_c/db_class.html">DB</a> 57<br><b>See Also</b> 58<a href="../api_c/db_list.html">Databases and Related Methods</a> 59</tt> 60<table width="100%"><tr><td><br></td><td align=right> 61<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> 62</td></tr></table> 63<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 64</body> 65</html> 66
