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  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2012-08-30 14:42:38 UTC
  • mfrom: (1.4.7)
  • Revision ID: package-import@ubuntu.com-20120830144238-c1y2og7dbm7m9nig
Tags: 5.4.0-beta-3-1~exp1
* New upstream release
* Update the scirenderer dep
* Get ride of libjhdf5-java dependency

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<?xml version="1.0" encoding="UTF-8"?>
 
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<!--
 
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 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 
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 * Copyright (C) 2008 - INRIA
 
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 * 
 
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 * This file must be used under the terms of the CeCILL.
 
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 * This source file is licensed as described in the file COPYING, which
 
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 * you should have received as part of this distribution.  The terms
 
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 * are also available at    
 
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 * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
 
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 *
 
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 -->
 
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<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:lang="ja" xml:id="givens">
 
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  <refnamediv>
 
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    <refname>givens</refname>
 
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    <refpurpose>ギブンス変換</refpurpose>
 
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  </refnamediv>
 
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  <refsynopsisdiv>
 
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    <title>呼び出し手順</title>
 
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    <synopsis>U=givens(xy)
 
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      U=givens(x,y)
 
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      [U,c]=givens(xy)
 
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      [U,c]=givens(x,y)
 
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    </synopsis>
 
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  </refsynopsisdiv>
 
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  <refsection>
 
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    <title>パラメータ</title>
 
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    <variablelist>
 
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      <varlistentry>
 
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        <term>x,y</term>
 
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        <listitem>
 
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          <para>実数または複素数</para>
 
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        </listitem>
 
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      </varlistentry>
 
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      <varlistentry>
 
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        <term>xy</term>
 
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        <listitem>
 
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          <para>実数または複素数の要素数2の列ベクトル</para>
 
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        </listitem>
 
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      </varlistentry>
 
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      <varlistentry>
 
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        <term>U</term>
 
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        <listitem>
 
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          <para>2x2 ユニタリ行列</para>
 
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        </listitem>
 
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      </varlistentry>
 
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      <varlistentry>
 
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        <term>c</term>
 
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        <listitem>
 
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          <para>実数または複素数の要素数2の列ベクトル</para>
 
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        </listitem>
 
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      </varlistentry>
 
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    </variablelist>
 
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  </refsection>
 
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  <refsection>
 
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    <title>説明</title><literal>xy = [x;y]</literal>として
 
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    <para>
 
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      <literal>U= givens(x, y)</literal> または <literal>U = givens(xy)</literal> 
 
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      は,次のような<literal>2</literal>x<literal>2</literal> の
 
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      ユニタリ行列 <literal>U</literal> を返します:
 
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    </para>
 
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    <para>
 
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      <literal>U*xy=[r;0]=c</literal>.
 
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    </para>
 
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    <para>
 
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      <literal>givens(x,y)</literal> および <literal>givens([x;y])</literal> は等価であることに
 
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      注意してください.
 
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    </para>
 
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  </refsection>
 
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  <refsection>
 
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    <title>例</title>
 
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    <programlisting role="example"><![CDATA[ 
 
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A=[3,4;5,6];
 
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U=givens(A(:,1));
 
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U*A
 
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 ]]></programlisting>
 
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  </refsection>
 
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  <refsection role="see also">
 
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    <title>参照</title>
 
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    <simplelist type="inline">
 
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      <member>
 
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        <link linkend="qr">qr</link>
 
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      </member>
 
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    </simplelist>
 
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  </refsection>
 
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</refentry>