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authoralk3pInjection <webmaster@raspii.tech>2024-02-04 16:16:35 +0800
committeralk3pInjection <webmaster@raspii.tech>2024-02-04 16:16:35 +0800
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tree00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gfortran/IBITS.html
Import stripped Arm GNU Toolchain 13.2.Rel1HEADumineko
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+<head>
+<title>The GNU Fortran Compiler: IBITS</title>
+
+<meta name="description" content="The GNU Fortran Compiler: IBITS">
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+<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
+<link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures">
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+<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
+<a name="IBITS"></a>
+<div class="header">
+<p>
+Next: <a href="IBSET.html#IBSET" accesskey="n" rel="next">IBSET</a>, Previous: <a href="IBCLR.html#IBCLR" accesskey="p" rel="previous">IBCLR</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> &nbsp; [<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="IBITS-_002d_002d_002d-Bit-extraction"></a>
+<h3 class="section">8.141 <code>IBITS</code> &mdash; Bit extraction</h3>
+<a name="index-IBITS"></a>
+<a name="index-BBITS"></a>
+<a name="index-IIBITS"></a>
+<a name="index-JIBITS"></a>
+<a name="index-KIBITS"></a>
+<a name="index-bits_002c-get"></a>
+<a name="index-bits_002c-extract"></a>
+
+<dl compact="compact">
+<dt><em>Description</em>:</dt>
+<dd><p><code>IBITS</code> extracts a field of length <var>LEN</var> from <var>I</var>,
+starting from bit position <var>POS</var> and extending left for <var>LEN</var>
+bits. The result is right-justified and the remaining bits are
+zeroed. The value of <code>POS+LEN</code> must be less than or equal to the
+value <code>BIT_SIZE(I)</code>.
+</p>
+</dd>
+<dt><em>Standard</em>:</dt>
+<dd><p>Fortran 90 and later, has overloads that are GNU extensions
+</p>
+</dd>
+<dt><em>Class</em>:</dt>
+<dd><p>Elemental function
+</p>
+</dd>
+<dt><em>Syntax</em>:</dt>
+<dd><p><code>RESULT = IBITS(I, POS, LEN)</code>
+</p>
+</dd>
+<dt><em>Arguments</em>:</dt>
+<dd><table>
+<tr><td width="15%"><var>I</var></td><td width="70%">The type shall be <code>INTEGER</code>.</td></tr>
+<tr><td width="15%"><var>POS</var></td><td width="70%">The type shall be <code>INTEGER</code>.</td></tr>
+<tr><td width="15%"><var>LEN</var></td><td width="70%">The type shall be <code>INTEGER</code>.</td></tr>
+</table>
+
+</dd>
+<dt><em>Return value</em>:</dt>
+<dd><p>The return value is of type <code>INTEGER</code> and of the same kind as
+<var>I</var>.
+</p>
+</dd>
+<dt><em>Specific names</em>:</dt>
+<dd><table>
+<thead><tr><th width="20%">Name</th><th width="23%">Argument</th><th width="20%">Return type</th><th width="33%">Standard</th></tr></thead>
+<tr><td width="20%"><code>IBITS(A)</code></td><td width="23%"><code>INTEGER A</code></td><td width="20%"><code>INTEGER</code></td><td width="33%">Fortran 90 and later</td></tr>
+<tr><td width="20%"><code>BBITS(A)</code></td><td width="23%"><code>INTEGER(1) A</code></td><td width="20%"><code>INTEGER(1)</code></td><td width="33%">GNU extension</td></tr>
+<tr><td width="20%"><code>IIBITS(A)</code></td><td width="23%"><code>INTEGER(2) A</code></td><td width="20%"><code>INTEGER(2)</code></td><td width="33%">GNU extension</td></tr>
+<tr><td width="20%"><code>JIBITS(A)</code></td><td width="23%"><code>INTEGER(4) A</code></td><td width="20%"><code>INTEGER(4)</code></td><td width="33%">GNU extension</td></tr>
+<tr><td width="20%"><code>KIBITS(A)</code></td><td width="23%"><code>INTEGER(8) A</code></td><td width="20%"><code>INTEGER(8)</code></td><td width="33%">GNU extension</td></tr>
+</table>
+
+</dd>
+<dt><em>See also</em>:</dt>
+<dd><p><a href="BIT_005fSIZE.html#BIT_005fSIZE">BIT_SIZE</a>, <br>
+<a href="IBCLR.html#IBCLR">IBCLR</a>, <br>
+<a href="IBSET.html#IBSET">IBSET</a>, <br>
+<a href="IAND.html#IAND">IAND</a>, <br>
+<a href="IOR.html#IOR">IOR</a>, <br>
+<a href="IEOR.html#IEOR">IEOR</a>
+</p></dd>
+</dl>
+
+
+
+
+
+
+</body>
+</html>
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