135 lines
4.7 KiB
HTML
135 lines
4.7 KiB
HTML
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>The GNU Fortran Compiler: NULL</title>
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<meta name="description" content="The GNU Fortran Compiler: NULL">
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<link href="index.html#Top" rel="start" title="Top">
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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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<link href="NUM_005fIMAGES.html#NUM_005fIMAGES" rel="next" title="NUM_IMAGES">
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="NULL"></a>
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<div class="header">
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<p>
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Next: <a href="NUM_005fIMAGES.html#NUM_005fIMAGES" accesskey="n" rel="next">NUM_IMAGES</a>, Previous: <a href="NOT.html#NOT" accesskey="p" rel="prev">NOT</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="NULL-_002d_002d_002d-Function-that-returns-an-disassociated-pointer"></a>
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<h3 class="section">9.201 <code>NULL</code> — Function that returns an disassociated pointer</h3>
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<a name="index-NULL"></a>
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<a name="index-pointer_002c-status-1"></a>
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<a name="index-pointer_002c-disassociated"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p>Returns a disassociated pointer.
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</p>
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<p>If <var>MOLD</var> is present, a disassociated pointer of the same type is
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returned, otherwise the type is determined by context.
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</p>
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<p>In Fortran 95, <var>MOLD</var> is optional. Please note that Fortran 2003
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includes cases where it is required.
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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>Fortran 95 and later
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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>Transformational 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>PTR => NULL([MOLD])</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>MOLD</var></td><td width="70%">(Optional) shall be a pointer of any association
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status and of any type.</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>A disassociated pointer.
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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">REAL, POINTER, DIMENSION(:) :: VEC => NULL ()
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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><a href="ASSOCIATED.html#ASSOCIATED">ASSOCIATED</a>
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</p></dd>
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</dl>
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