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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gfortran/Variable-FORMAT-expressions.html | |
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diff --git a/share/doc/gfortran/Variable-FORMAT-expressions.html b/share/doc/gfortran/Variable-FORMAT-expressions.html new file mode 100644 index 0000000..6bf73c0 --- /dev/null +++ b/share/doc/gfortran/Variable-FORMAT-expressions.html @@ -0,0 +1,122 @@ +<!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: Variable FORMAT expressions</title> + +<meta name="description" content="The GNU Fortran Compiler: Variable FORMAT expressions"> +<meta name="keywords" content="The GNU Fortran Compiler: Variable FORMAT expressions"> +<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-not-implemented-in-GNU-Fortran.html#Extensions-not-implemented-in-GNU-Fortran" rel="up" title="Extensions not implemented in GNU Fortran"> +<link href="Alternate-complex-function-syntax.html#Alternate-complex-function-syntax" rel="next" title="Alternate complex function syntax"> +<link href="ENCODE-and-DECODE-statements.html#ENCODE-and-DECODE-statements" rel="previous" title="ENCODE and DECODE statements"> +<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="Variable-FORMAT-expressions"></a> +<div class="header"> +<p> +Next: <a href="Alternate-complex-function-syntax.html#Alternate-complex-function-syntax" accesskey="n" rel="next">Alternate complex function syntax</a>, Previous: <a href="ENCODE-and-DECODE-statements.html#ENCODE-and-DECODE-statements" accesskey="p" rel="previous">ENCODE and DECODE statements</a>, Up: <a href="Extensions-not-implemented-in-GNU-Fortran.html#Extensions-not-implemented-in-GNU-Fortran" accesskey="u" rel="up">Extensions not implemented in GNU Fortran</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="Variable-FORMAT-expressions-1"></a> +<h4 class="subsection">5.2.2 Variable <code>FORMAT</code> expressions</h4> +<a name="index-FORMAT"></a> + +<p>A variable <code>FORMAT</code> expression is format statement which includes +angle brackets enclosing a Fortran expression: <code>FORMAT(I<N>)</code>. GNU +Fortran does not support this legacy extension. The effect of variable +format expressions can be reproduced by using the more powerful (and +standard) combination of internal output and string formats. For example, +replace a code fragment like this: +</p> +<div class="smallexample"> +<pre class="smallexample"> WRITE(6,20) INT1 + 20 FORMAT(I<N+1>) +</pre></div> + +<p>with the following: +</p> +<div class="smallexample"> +<pre class="smallexample">c Variable declaration + CHARACTER(LEN=20) FMT +c +c Other code here... +c + WRITE(FMT,'("(I", I0, ")")') N+1 + WRITE(6,FMT) INT1 +</pre></div> + +<p>or with: +</p> +<div class="smallexample"> +<pre class="smallexample">c Variable declaration + CHARACTER(LEN=20) FMT +c +c Other code here... +c + WRITE(FMT,*) N+1 + WRITE(6,"(I" // ADJUSTL(FMT) // ")") INT1 +</pre></div> + + + + + +</body> +</html> |