diff options
| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
|---|---|---|
| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gfortran/Runtime-Options.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
Diffstat (limited to 'share/doc/gfortran/Runtime-Options.html')
| -rw-r--r-- | share/doc/gfortran/Runtime-Options.html | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/share/doc/gfortran/Runtime-Options.html b/share/doc/gfortran/Runtime-Options.html new file mode 100644 index 0000000..102a9c3 --- /dev/null +++ b/share/doc/gfortran/Runtime-Options.html @@ -0,0 +1,145 @@ +<!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: Runtime Options</title> + +<meta name="description" content="The GNU Fortran Compiler: Runtime Options"> +<meta name="keywords" content="The GNU Fortran Compiler: Runtime Options"> +<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="Invoking-GNU-Fortran.html#Invoking-GNU-Fortran" rel="up" title="Invoking GNU Fortran"> +<link href="Code-Gen-Options.html#Code-Gen-Options" rel="next" title="Code Gen Options"> +<link href="Link-Options.html#Link-Options" rel="previous" title="Link Options"> +<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="Runtime-Options"></a> +<div class="header"> +<p> +Next: <a href="Code-Gen-Options.html#Code-Gen-Options" accesskey="n" rel="next">Code Gen Options</a>, Previous: <a href="Link-Options.html#Link-Options" accesskey="p" rel="previous">Link Options</a>, Up: <a href="Invoking-GNU-Fortran.html#Invoking-GNU-Fortran" accesskey="u" rel="up">Invoking 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="Influencing-runtime-behavior"></a> +<h3 class="section">2.8 Influencing runtime behavior</h3> +<a name="index-options_002c-runtime"></a> + +<p>These options affect the runtime behavior of programs compiled with GNU Fortran. +</p> +<dl compact="compact"> +<dd><a name="index-fconvert_003dconversion"></a> +</dd> +<dt><code>-fconvert=<var>conversion</var></code></dt> +<dd><p>Specify the representation of data for unformatted files. Valid +values for conversion on most systems are: ‘<samp>native</samp>’, the default; +‘<samp>swap</samp>’, swap between big- and little-endian; ‘<samp>big-endian</samp>’, use +big-endian representation for unformatted files; ‘<samp>little-endian</samp>’, use +little-endian representation for unformatted files. +</p> +<p>On POWER systems which suppport <samp>-mabi=ieeelongdouble</samp>, +there are additional options, which can be combined with others with +commas. Those are +</p><ul class="no-bullet"> +<li><!-- /@w --> <samp>-fconvert=r16_ieee</samp> Use IEEE 128-bit format for +<code>REAL(KIND=16)</code>. +</li><li><!-- /@w --> <samp>-fconvert=r16_ibm</samp> Use IBM long double format for +<code>REAL(KIND=16)</code>. +</li></ul> + +<p><em>This option has an effect only when used in the main program. +The <code>CONVERT</code> specifier and the GFORTRAN_CONVERT_UNIT environment +variable override the default specified by <samp>-fconvert</samp>.</em> +</p> +<a name="index-frecord_002dmarker_003dlength"></a> +</dd> +<dt><code>-frecord-marker=<var>length</var></code></dt> +<dd><p>Specify the length of record markers for unformatted files. +Valid values for <var>length</var> are 4 and 8. Default is 4. +<em>This is different from previous versions of <code>gfortran</code></em>, +which specified a default record marker length of 8 on most +systems. If you want to read or write files compatible +with earlier versions of <code>gfortran</code>, use <samp>-frecord-marker=8</samp>. +</p> +<a name="index-fmax_002dsubrecord_002dlength_003dlength"></a> +</dd> +<dt><code>-fmax-subrecord-length=<var>length</var></code></dt> +<dd><p>Specify the maximum length for a subrecord. The maximum permitted +value for length is 2147483639, which is also the default. Only +really useful for use by the gfortran testsuite. +</p> +<a name="index-fsign_002dzero"></a> +</dd> +<dt><code>-fsign-zero</code></dt> +<dd><p>When enabled, floating point numbers of value zero with the sign bit set +are written as negative number in formatted output and treated as +negative in the <code>SIGN</code> intrinsic. <samp>-fno-sign-zero</samp> does not +print the negative sign of zero values (or values rounded to zero for I/O) +and regards zero as positive number in the <code>SIGN</code> intrinsic for +compatibility with Fortran 77. The default is <samp>-fsign-zero</samp>. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="Code-Gen-Options.html#Code-Gen-Options" accesskey="n" rel="next">Code Gen Options</a>, Previous: <a href="Link-Options.html#Link-Options" accesskey="p" rel="previous">Link Options</a>, Up: <a href="Invoking-GNU-Fortran.html#Invoking-GNU-Fortran" accesskey="u" rel="up">Invoking 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> + + + +</body> +</html> |