132 lines
4.6 KiB
HTML
132 lines
4.6 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1999-2016 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>The GNU Fortran Compiler: ISATTY</title>
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<meta name="description" content="The GNU Fortran Compiler: ISATTY">
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<meta name="keywords" content="The GNU Fortran Compiler: ISATTY">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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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="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures">
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<link href="ISHFT.html#ISHFT" rel="next" title="ISHFT">
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<link href="IS_005fIOSTAT_005fEOR.html#IS_005fIOSTAT_005fEOR" rel="prev" title="IS_IOSTAT_EOR">
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="ISATTY"></a>
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<div class="header">
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<p>
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Next: <a href="ISHFT.html#ISHFT" accesskey="n" rel="next">ISHFT</a>, Previous: <a href="IS_005fIOSTAT_005fEOR.html#IS_005fIOSTAT_005fEOR" accesskey="p" rel="prev">IS_IOSTAT_EOR</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</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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</div>
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<hr>
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<a name="ISATTY-_002d_002d_002d-Whether-a-unit-is-a-terminal-device_002e"></a>
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<h3 class="section">9.149 <code>ISATTY</code> — Whether a unit is a terminal device.</h3>
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<a name="index-ISATTY"></a>
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<a name="index-system_002c-terminal"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p>Determine whether a unit is connected to a terminal device.
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</p>
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</dd>
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<dt><em>Standard</em>:</dt>
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<dd><p>GNU extension
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</p>
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</dd>
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<dt><em>Class</em>:</dt>
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<dd><p>Function
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</p>
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</dd>
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<dt><em>Syntax</em>:</dt>
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<dd><p><code>RESULT = ISATTY(UNIT)</code>
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</p>
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</dd>
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<dt><em>Arguments</em>:</dt>
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<dd><table>
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<tr><td width="15%"><var>UNIT</var></td><td width="70%">Shall be a scalar <code>INTEGER</code>.</td></tr>
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</table>
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</dd>
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<dt><em>Return value</em>:</dt>
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<dd><p>Returns <code>.TRUE.</code> if the <var>UNIT</var> is connected to a terminal
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device, <code>.FALSE.</code> otherwise.
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</p>
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</dd>
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<dt><em>Example</em>:</dt>
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<dd><div class="smallexample">
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<pre class="smallexample">PROGRAM test_isatty
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INTEGER(kind=1) :: unit
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DO unit = 1, 10
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write(*,*) isatty(unit=unit)
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END DO
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END PROGRAM
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</pre></div>
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</dd>
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<dt><em>See also</em>:</dt>
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<dd><p><a href="TTYNAM.html#TTYNAM">TTYNAM</a>
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</p></dd>
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</dl>
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</body>
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</html>
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