145 lines
5.2 KiB
HTML
145 lines
5.2 KiB
HTML
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<head>
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<title>The GNU Fortran Compiler: XOR</title>
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures">
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="XOR"></a>
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<div class="header">
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<p>
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Previous: <a href="VERIFY.html#VERIFY" accesskey="p" rel="prev">VERIFY</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="XOR-_002d_002d_002d-Bitwise-logical-exclusive-OR"></a>
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<h3 class="section">9.272 <code>XOR</code> — Bitwise logical exclusive OR</h3>
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<a name="index-XOR"></a>
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<a name="index-bitwise-logical-exclusive-or-1"></a>
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<a name="index-logical-exclusive-or_002c-bitwise-1"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p>Bitwise logical exclusive or.
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</p>
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<p>This intrinsic routine is provided for backwards compatibility with
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GNU Fortran 77. For integer arguments, programmers should consider
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the use of the <a href="IEOR.html#IEOR">IEOR</a> intrinsic and for logical arguments the
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<code>.NEQV.</code> operator, which are both defined by the Fortran standard.
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</p>
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</dd>
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<dt><em>Standard</em>:</dt>
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<dd><p>GNU extension
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</p>
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</dd>
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<dt><em>Class</em>:</dt>
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<dd><p>Function
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</p>
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</dd>
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<dt><em>Syntax</em>:</dt>
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<dd><p><code>RESULT = XOR(I, J)</code>
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</p>
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</dd>
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<dt><em>Arguments</em>:</dt>
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<dd><table>
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<tr><td width="15%"><var>I</var></td><td width="70%">The type shall be either a scalar <code>INTEGER</code>
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type or a scalar <code>LOGICAL</code> type.</td></tr>
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<tr><td width="15%"><var>J</var></td><td width="70%">The type shall be the same as the type of <var>I</var>.</td></tr>
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</table>
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</dd>
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<dt><em>Return value</em>:</dt>
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<dd><p>The return type is either a scalar <code>INTEGER</code> or a scalar
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<code>LOGICAL</code>. If the kind type parameters differ, then the
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smaller kind type is implicitly converted to larger kind, and the
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return has the larger kind.
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</p>
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</dd>
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<dt><em>Example</em>:</dt>
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<dd><div class="smallexample">
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<pre class="smallexample">PROGRAM test_xor
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LOGICAL :: T = .TRUE., F = .FALSE.
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INTEGER :: a, b
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DATA a / Z'F' /, b / Z'3' /
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WRITE (*,*) XOR(T, T), XOR(T, F), XOR(F, T), XOR(F, F)
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WRITE (*,*) XOR(a, b)
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END PROGRAM
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</pre></div>
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</dd>
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<dt><em>See also</em>:</dt>
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<dd><p>Fortran 95 elemental function: <a href="IEOR.html#IEOR">IEOR</a>
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</p></dd>
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</dl>
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</body>
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</html>
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