<html lang="en"> <head> <title>XOR - The GNU Fortran Compiler</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="The GNU Fortran Compiler"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Intrinsic-Procedures.html#Intrinsic-Procedures" title="Intrinsic Procedures"> <link rel="prev" href="VERIFY.html#VERIFY" title="VERIFY"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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.--> <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="XOR"></a> <p> Previous: <a rel="previous" accesskey="p" href="VERIFY.html#VERIFY">VERIFY</a>, Up: <a rel="up" accesskey="u" href="Intrinsic-Procedures.html#Intrinsic-Procedures">Intrinsic Procedures</a> <hr> </div> <h3 class="section">8.253 <code>XOR</code> — Bitwise logical exclusive OR</h3> <p><a name="index-XOR-1105"></a><a name="index-bitwise-logical-exclusive-or-1106"></a><a name="index-logical-exclusive-or_002c-bitwise-1107"></a> <dl> <dt><em>Description</em>:<dd>Bitwise logical exclusive or. <p>This intrinsic routine is provided for backwards compatibility with GNU Fortran 77. For integer arguments, programmers should consider the use of the <a href="IEOR.html#IEOR">IEOR</a> intrinsic and for logical arguments the <code>.NEQV.</code> operator, which are both defined by the Fortran standard. <br><dt><em>Standard</em>:<dd>GNU extension <br><dt><em>Class</em>:<dd>Function <br><dt><em>Syntax</em>:<dd><code>RESULT = XOR(I, J)</code> <br><dt><em>Arguments</em>:<dd> <p><table summary=""><tr align="left"><td valign="top" width="15%"><var>I</var> </td><td valign="top" width="70%">The type shall be either a scalar <code>INTEGER</code> type or a scalar <code>LOGICAL</code> type. <br></td></tr><tr align="left"><td valign="top" width="15%"><var>J</var> </td><td valign="top" width="70%">The type shall be the same as the type of <var>I</var>. <br></td></tr></table> <br><dt><em>Return value</em>:<dd>The return type is either a scalar <code>INTEGER</code> or a scalar <code>LOGICAL</code>. If the kind type parameters differ, then the smaller kind type is implicitly converted to larger kind, and the return has the larger kind. <br><dt><em>Example</em>:<dd> <pre class="smallexample"> PROGRAM test_xor LOGICAL :: T = .TRUE., F = .FALSE. INTEGER :: a, b DATA a / Z'F' /, b / Z'3' / WRITE (*,*) XOR(T, T), XOR(T, F), XOR(F, T), XOR(F, F) WRITE (*,*) XOR(a, b) END PROGRAM </pre> <br><dt><em>See also</em>:<dd>Fortran 95 elemental function: <a href="IEOR.html#IEOR">IEOR</a> </dl> </body></html>