scilab/modules/elementary_functions/help/ja_JP/floating_point/ieee.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!--
   3  * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
   4  * Copyright (C) INRIA
   5  * Copyright (C) 2017 - Samuel GOUGEON
   6  *
   7  * Copyright (C) 2012 - 2016 - Scilab Enterprises
   8  *
   9  * This file is hereby licensed under the terms of the GNU GPL v2.0,
  10  * pursuant to article 5.3.4 of the CeCILL v.2.1.
  11  * This file was originally licensed under the terms of the CeCILL v2.1,
  12  * and continues to be available under such terms.
  13  * For more information, see the COPYING file which you should have received
  14  * along with this program.
  15  *
  16  -->
  17 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink"
  18           xmlns:svg="http://www.w3.org/2000/svg" xmlns:ns5="http://www.w3.org/1999/xhtml"
  19           xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook"
  20           xmlns:scilab="http://www.scilab.org" xml:id="ieee" xml:lang="ja">
  21     <refnamediv>
  22         <refname>ieee</refname>
  23         <refpurpose>浮動小数点例外モードを設定</refpurpose>
  24     </refnamediv>
  25     <refsynopsisdiv>
  26         <title>呼出し手順</title>
  27         <synopsis>
  28             mod = ieee()
  29             ieee(mod)
  30         </synopsis>
  31     </refsynopsisdiv>
  32     <refsection>
  33         <title>引数</title>
  34         <variablelist>
  35             <varlistentry>
  36                 <term>mod</term>
  37                 <listitem>
  38                     <para>
  39                         整数スカラーで,0,1または2を指定
  40                     </para>
  41                 </listitem>
  42             </varlistentry>
  43         </variablelist>
  44     </refsection>
  45     <refsection>
  46         <title>説明</title>
  47         <para>
  48             <literal>ieee()</literal> はカレントの浮動小数点例外モード
  49             を返します.
  50         <variablelist>
  51             <varlistentry>
  52                 <term>0</term>
  53                 <listitem>
  54                     <para>浮動小数点例外はエラーを発生</para>
  55                     <para>
  56                        <literal>%inf</literal> and <literal>%nan</literal> special values can be
  57                        used in this mode without error. For instance, <literal>%inf/%inf</literal>,
  58                        <literal>%inf-%inf</literal> or <literal>%inf/%nan</literal> are known
  59                        operations.
  60                     </para>
  61                 </listitem>
  62             </varlistentry>
  63             <varlistentry>
  64                 <term>1</term>
  65                 <listitem>
  66                     浮動小数点例外は警告を発生.
  67                 </listitem>
  68             </varlistentry>
  69             <varlistentry>
  70                 <term>2</term>
  71                 <listitem>
  72                     浮動小数点例外は無限大(Inf)またはNaNを発生.
  73                 </listitem>
  74             </varlistentry>
  75         </variablelist>
  76         </para>
  77         <para>
  78             <literal>ieee(mod)</literal> sets the current floating point exception mode to
  79             <varname>mod</varname>.
  80         </para>
  81         <note>
  82             The default initial mode is 2. This default value may be set in any of the following ways:
  83             <itemizedlist>
  84                 <listitem>
  85                   Through the Preferences GUI: <code>preferences</code>, in the section
  86                   <emphasis role="italic">General => Environment => ieee</emphasis>.
  87                 </listitem>
  88                 <listitem>
  89                   Equivalently, using <code>xmlSetValues</code> as follows (to set the mode to 1) :
  90                   <para>
  91                   <literal>xmlSetValues("//general/body/environment", ["fpe";"1"])</literal>
  92                   </para>
  93                 </listitem>
  94                 <listitem>
  95                     Or by using <literal>ieee(mod)</literal> in your startup file.
  96                 </listitem>
  97             </itemizedlist>
  98         </note>
  99         <warning>
 100             ライブラリのアルゴリズムの内部で発生した浮動小数点例外は,
 101             まだ<literal>ieee</literal>モードでは設定できません.
 102         </warning>
 103     </refsection>
 104     <refsection>
 105         <title>例</title>
 106         <programlisting role="example"><![CDATA[
 107 ieee(1); 1/0
 108 ieee(2); 1/0, log(0)
 109  ]]></programlisting>
 110     </refsection>
 111     <refsection role="see also">
 112         <title>参照</title>
 113         <simplelist type="inline">
 114             <member>
 115                 <link linkend="percentnan">%nan</link>
 116             </member>
 117             <member>
 118                 <link linkend="percentinf">%inf</link>
 119             </member>
 120             <member>
 121                 <link linkend="isinf">isinf</link>
 122             </member>
 123             <member>
 124                 <link linkend="isnan">isnan</link>
 125             </member>
 126             <member>
 127                 <link linkend="number_properties">number_properties</link>
 128             </member>
 129         </simplelist>
 130     </refsection>
 131     <refsection role="history">
 132         <title>履歴</title>
 133         <revhistory>
 134             <revision>
 135                 <revnumber>6.0.0</revnumber>
 136                 <revremark>2 is now the initial mode value.</revremark>
 137             </revision>
 138         </revhistory>
 139     </refsection>
 140 </refentry>