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<title>The GNU Fortran Compiler: Extensions not implemented in GNU Fortran</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="Extensions.html#Extensions" rel="up" title="Extensions">
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<a name="Extensions-not-implemented-in-GNU-Fortran"></a>
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Previous: <a href="Extensions-implemented-in-GNU-Fortran.html#Extensions-implemented-in-GNU-Fortran" accesskey="p" rel="prev">Extensions implemented in GNU Fortran</a>, Up: <a href="Extensions.html#Extensions" accesskey="u" rel="up">Extensions</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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<a name="Extensions-not-implemented-in-GNU-Fortran-1"></a>
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<h3 class="section">6.2 Extensions not implemented in GNU Fortran</h3>
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<a name="index-extensions_002c-not-implemented"></a>
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<p>The long history of the Fortran language, its wide use and broad
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userbase, the large number of different compiler vendors and the lack of
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some features crucial to users in the first standards have lead to the
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existence of a number of important extensions to the language. While
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some of the most useful or popular extensions are supported by the GNU
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Fortran compiler, not all existing extensions are supported. This section
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aims at listing these extensions and offering advice on how best make
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code that uses them running with the GNU Fortran compiler.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="ENCODE-and-DECODE-statements.html#ENCODE-and-DECODE-statements" accesskey="1">ENCODE and DECODE statements</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Variable-FORMAT-expressions.html#Variable-FORMAT-expressions" accesskey="2">Variable FORMAT expressions</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Alternate-complex-function-syntax.html#Alternate-complex-function-syntax" accesskey="3">Alternate complex function syntax</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Volatile-COMMON-blocks.html#Volatile-COMMON-blocks" accesskey="4">Volatile COMMON blocks</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="OPEN_0028-_002e_002e_002e-NAME_003d_0029.html#OPEN_0028-_002e_002e_002e-NAME_003d_0029" accesskey="5">OPEN( ... NAME=)</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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