| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html> |
| <!-- Copyright (C) 1999-2014 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 5.2, http://www.gnu.org/software/texinfo/ --> |
| <head> |
| <title>The GNU Fortran Compiler: IPARITY</title> |
| |
| <meta name="description" content="The GNU Fortran Compiler: IPARITY"> |
| <meta name="keywords" content="The GNU Fortran Compiler: IPARITY"> |
| <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="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures"> |
| <link href="IRAND.html#IRAND" rel="next" title="IRAND"> |
| <link href="IOR.html#IOR" rel="prev" title="IOR"> |
| <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="IPARITY"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="IRAND.html#IRAND" accesskey="n" rel="next">IRAND</a>, Previous: <a href="IOR.html#IOR" accesskey="p" rel="prev">IOR</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> |
| </div> |
| <hr> |
| <a name="IPARITY-_002d_002d_002d-Bitwise-XOR-of-array-elements"></a> |
| <h3 class="section">8.130 <code>IPARITY</code> — Bitwise XOR of array elements</h3> |
| <a name="index-IPARITY"></a> |
| <a name="index-array_002c-parity"></a> |
| <a name="index-array_002c-XOR"></a> |
| <a name="index-bits_002c-XOR-of-array-elements"></a> |
| |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p>Reduces with bitwise XOR (exclusive or) the elements of <var>ARRAY</var> along |
| dimension <var>DIM</var> if the corresponding element in <var>MASK</var> is <code>TRUE</code>. |
| </p> |
| </dd> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>Fortran 2008 and later |
| </p> |
| </dd> |
| <dt><em>Class</em>:</dt> |
| <dd><p>Transformational function |
| </p> |
| </dd> |
| <dt><em>Syntax</em>:</dt> |
| <dd><table> |
| <tr><td width="80%"><code>RESULT = IPARITY(ARRAY[, MASK])</code></td></tr> |
| <tr><td width="80%"><code>RESULT = IPARITY(ARRAY, DIM[, MASK])</code></td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Arguments</em>:</dt> |
| <dd><table> |
| <tr><td width="15%"><var>ARRAY</var></td><td width="70%">Shall be an array of type <code>INTEGER</code></td></tr> |
| <tr><td width="15%"><var>DIM</var></td><td width="70%">(Optional) shall be a scalar of type |
| <code>INTEGER</code> with a value in the range from 1 to n, where n |
| equals the rank of <var>ARRAY</var>.</td></tr> |
| <tr><td width="15%"><var>MASK</var></td><td width="70%">(Optional) shall be of type <code>LOGICAL</code> |
| and either be a scalar or an array of the same shape as <var>ARRAY</var>.</td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Return value</em>:</dt> |
| <dd><p>The result is of the same type as <var>ARRAY</var>. |
| </p> |
| <p>If <var>DIM</var> is absent, a scalar with the bitwise XOR of all elements in |
| <var>ARRAY</var> is returned. Otherwise, an array of rank n-1, where n equals |
| the rank of <var>ARRAY</var>, and a shape similar to that of <var>ARRAY</var> with |
| dimension <var>DIM</var> dropped is returned. |
| </p> |
| </dd> |
| <dt><em>Example</em>:</dt> |
| <dd><div class="smallexample"> |
| <pre class="smallexample">PROGRAM test_iparity |
| INTEGER(1) :: a(2) |
| |
| a(1) = b'00100100' |
| a(2) = b'01101010' |
| |
| ! prints 01001110 |
| PRINT '(b8.8)', IPARITY(a) |
| END PROGRAM |
| </pre></div> |
| |
| </dd> |
| <dt><em>See also</em>:</dt> |
| <dd><p><a href="IANY.html#IANY">IANY</a>, <a href="IALL.html#IALL">IALL</a>, <a href="IEOR.html#IEOR">IEOR</a>, <a href="PARITY.html#PARITY">PARITY</a> |
| </p></dd> |
| </dl> |
| |
| |
| |
| |
| |
| |
| </body> |
| </html> |
