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diff --git a/share/doc/gfortran/Extensions-implemented-in-GNU-Fortran.html b/share/doc/gfortran/Extensions-implemented-in-GNU-Fortran.html new file mode 100644 index 0000000..94ccfd4 --- /dev/null +++ b/share/doc/gfortran/Extensions-implemented-in-GNU-Fortran.html @@ -0,0 +1,175 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1999-2023 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. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>The GNU Fortran Compiler: Extensions implemented in GNU Fortran</title> + +<meta name="description" content="The GNU Fortran Compiler: Extensions implemented in GNU Fortran"> +<meta name="keywords" content="The GNU Fortran Compiler: Extensions implemented in GNU Fortran"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Extensions.html#Extensions" rel="up" title="Extensions"> +<link href="Old_002dstyle-kind-specifications.html#Old_002dstyle-kind-specifications" rel="next" title="Old-style kind specifications"> +<link href="Extensions.html#Extensions" rel="previous" title="Extensions"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Extensions-implemented-in-GNU-Fortran"></a> +<div class="header"> +<p> +Next: <a href="Extensions-not-implemented-in-GNU-Fortran.html#Extensions-not-implemented-in-GNU-Fortran" accesskey="n" rel="next">Extensions not 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> +</div> +<hr> +<a name="Extensions-implemented-in-GNU-Fortran-1"></a> +<h3 class="section">5.1 Extensions implemented in GNU Fortran</h3> +<a name="index-extensions_002c-implemented"></a> + +<p>GNU Fortran implements a number of extensions over standard Fortran. +This chapter contains information on their syntax and meaning. There +are currently two categories of GNU Fortran extensions, those that +provide functionality beyond that provided by any standard, and those +that are supported by GNU Fortran purely for backward compatibility +with legacy compilers. By default, <samp>-std=gnu</samp> allows the +compiler to accept both types of extensions, but to warn about the use +of the latter. Specifying either <samp>-std=f95</samp>, +<samp>-std=f2003</samp>, <samp>-std=f2008</samp>, or <samp>-std=f2018</samp> +disables both types of extensions, and <samp>-std=legacy</samp> allows +both without warning. The special compile flag <samp>-fdec</samp> enables +additional compatibility extensions along with those enabled by +<samp>-std=legacy</samp>. +</p> +<table class="menu" border="0" cellspacing="0"> +<tr><td align="left" valign="top">• <a href="Old_002dstyle-kind-specifications.html#Old_002dstyle-kind-specifications" accesskey="1">Old-style kind specifications</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Old_002dstyle-variable-initialization.html#Old_002dstyle-variable-initialization" accesskey="2">Old-style variable initialization</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Extensions-to-namelist.html#Extensions-to-namelist" accesskey="3">Extensions to namelist</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="X-format-descriptor-without-count-field.html#X-format-descriptor-without-count-field" accesskey="4">X format descriptor without count field</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Commas-in-FORMAT-specifications.html#Commas-in-FORMAT-specifications" accesskey="5">Commas in FORMAT specifications</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Missing-period-in-FORMAT-specifications.html#Missing-period-in-FORMAT-specifications" accesskey="6">Missing period in FORMAT specifications</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Default-widths-for-F_002c-G-and-I-format-descriptors.html#Default-widths-for-F_002c-G-and-I-format-descriptors" accesskey="7">Default widths for F, G and I format descriptors</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="I_002fO-item-lists.html#I_002fO-item-lists" accesskey="8">I/O item lists</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Q-exponent_002dletter.html#Q-exponent_002dletter" accesskey="9"><code>Q</code> exponent-letter</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="BOZ-literal-constants.html#BOZ-literal-constants">BOZ literal constants</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Real-array-indices.html#Real-array-indices">Real array indices</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Unary-operators.html#Unary-operators">Unary operators</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Implicitly-convert-LOGICAL-and-INTEGER-values.html#Implicitly-convert-LOGICAL-and-INTEGER-values">Implicitly convert LOGICAL and INTEGER values</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Hollerith-constants-support.html#Hollerith-constants-support">Hollerith constants support</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Character-conversion.html#Character-conversion">Character conversion</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Cray-pointers.html#Cray-pointers">Cray pointers</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="CONVERT-specifier.html#CONVERT-specifier">CONVERT specifier</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="OpenMP.html#OpenMP">OpenMP</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="OpenACC.html#OpenACC">OpenACC</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Argument-list-functions.html#Argument-list-functions">Argument list functions</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Read_002fWrite-after-EOF-marker.html#Read_002fWrite-after-EOF-marker">Read/Write after EOF marker</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="STRUCTURE-and-RECORD.html#STRUCTURE-and-RECORD">STRUCTURE and RECORD</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="UNION-and-MAP.html#UNION-and-MAP">UNION and MAP</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Type-variants-for-integer-intrinsics.html#Type-variants-for-integer-intrinsics">Type variants for integer intrinsics</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="AUTOMATIC-and-STATIC-attributes.html#AUTOMATIC-and-STATIC-attributes">AUTOMATIC and STATIC attributes</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Extended-math-intrinsics.html#Extended-math-intrinsics">Extended math intrinsics</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Form-feed-as-whitespace.html#Form-feed-as-whitespace">Form feed as whitespace</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="TYPE-as-an-alias-for-PRINT.html#TYPE-as-an-alias-for-PRINT">TYPE as an alias for PRINT</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_0025LOC-as-an-rvalue.html#g_t_0025LOC-as-an-rvalue">%LOC as an rvalue</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="_002eXOR_002e-operator.html#g_t_002eXOR_002e-operator">.XOR. operator</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Bitwise-logical-operators.html#Bitwise-logical-operators">Bitwise logical operators</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Extended-I_002fO-specifiers.html#Extended-I_002fO-specifiers">Extended I/O specifiers</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Legacy-PARAMETER-statements.html#Legacy-PARAMETER-statements">Legacy PARAMETER statements</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Default-exponents.html#Default-exponents">Default exponents</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +</table> + +<hr> +<div class="header"> +<p> +Next: <a href="Extensions-not-implemented-in-GNU-Fortran.html#Extensions-not-implemented-in-GNU-Fortran" accesskey="n" rel="next">Extensions not 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> +</div> + + + +</body> +</html> |