148 lines
5.6 KiB
HTML
148 lines
5.6 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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<!-- 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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(see below). A copy of the license is included in the section entitled
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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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: AINT</title>
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<meta name="description" content="The GNU Fortran Compiler: AINT">
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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="ALARM.html#ALARM" rel="next" title="ALARM">
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<link href="AIMAG.html#AIMAG" rel="prev" title="AIMAG">
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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="AINT"></a>
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<div class="header">
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<p>
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Next: <a href="ALARM.html#ALARM" accesskey="n" rel="next">ALARM</a>, Previous: <a href="AIMAG.html#AIMAG" accesskey="p" rel="prev">AIMAG</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="AINT-_002d_002d_002d-Truncate-to-a-whole-number"></a>
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<h3 class="section">9.11 <code>AINT</code> — Truncate to a whole number</h3>
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<a name="index-AINT"></a>
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<a name="index-DINT"></a>
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<a name="index-floor"></a>
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<a name="index-rounding_002c-floor"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p><code>AINT(A [, KIND])</code> truncates its argument to a whole number.
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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>Fortran 77 and later
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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>Elemental 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 = AINT(A [, KIND])</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>A</var></td><td width="70%">The type of the argument shall be <code>REAL</code>.</td></tr>
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<tr><td width="15%"><var>KIND</var></td><td width="70%">(Optional) An <code>INTEGER</code> initialization
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expression indicating the kind parameter of the result.</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>The return value is of type <code>REAL</code> with the kind type parameter of the
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argument if the optional <var>KIND</var> is absent; otherwise, the kind
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type parameter will be given by <var>KIND</var>. If the magnitude of
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<var>X</var> is less than one, <code>AINT(X)</code> returns zero. If the
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magnitude is equal to or greater than one then it returns the largest
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whole number that does not exceed its magnitude. The sign is the same
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as the sign of <var>X</var>.
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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_aint
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real(4) x4
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real(8) x8
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x4 = 1.234E0_4
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x8 = 4.321_8
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print *, aint(x4), dint(x8)
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x8 = aint(x4,8)
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end program test_aint
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</pre></div>
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</dd>
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<dt><em>Specific names</em>:</dt>
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<dd><table>
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<tr><td width="20%">Name</td><td width="20%">Argument</td><td width="20%">Return type</td><td width="25%">Standard</td></tr>
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<tr><td width="20%"><code>AINT(A)</code></td><td width="20%"><code>REAL(4) A</code></td><td width="20%"><code>REAL(4)</code></td><td width="25%">Fortran 77 and later</td></tr>
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<tr><td width="20%"><code>DINT(A)</code></td><td width="20%"><code>REAL(8) A</code></td><td width="20%"><code>REAL(8)</code></td><td width="25%">Fortran 77 and later</td></tr>
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</table>
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</dd>
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</dl>
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</body>
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</html>
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