<html lang="en"> <head> <title>Standards - 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="Introduction.html#Introduction" title="Introduction"> <link rel="prev" href="Project-Status.html#Project-Status" title="Project Status"> <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="Standards"></a> <p> Previous: <a rel="previous" accesskey="p" href="Project-Status.html#Project-Status">Project Status</a>, Up: <a rel="up" accesskey="u" href="Introduction.html#Introduction">Introduction</a> <hr> </div> <h3 class="section">1.6 Standards</h3> <p><a name="index-Standards-11"></a> <ul class="menu"> <li><a accesskey="1" href="Varying-Length-Character-Strings.html#Varying-Length-Character-Strings">Varying Length Character Strings</a> </ul> <p>The GNU Fortran compiler implements ISO/IEC 1539:1997 (Fortran 95). As such, it can also compile essentially all standard-compliant Fortran 90 and Fortran 77 programs. It also supports the ISO/IEC TR-15581 enhancements to allocatable arrays. <p>In the future, the GNU Fortran compiler will also support ISO/IEC 1539-1:2004 (Fortran 2003), ISO/IEC 1539-1:2010 (Fortran 2008) and future Fortran standards. Partial support of the Fortran 2003 and Fortran 2008 standard is already provided; the current status of the support is reported in the <a href="Fortran-2003-status.html#Fortran-2003-status">Fortran 2003 status</a> and <a href="Fortran-2008-status.html#Fortran-2008-status">Fortran 2008 status</a> sections of the documentation. <p>Additionally, the GNU Fortran compilers supports the OpenMP specification (version 3.0, <a href="http://openmp.org/wp/openmp-specifications/">http://openmp.org/wp/openmp-specifications/</a>). </body></html>