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<?xml version="1.0" encoding="UTF-8"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) INRIA -
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
*
-->
<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"
xml:lang="ru" xml:id="isnum">
<refnamediv>
<refname>isnum</refname>
<refpurpose>
проверка того, что строка представляет число
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Последовательность вызова</title>
<synopsis>res = isnum(str)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Аргументы</title>
<variablelist>
<varlistentry>
<term>str</term>
<listitem>
<para>
символьная строка или матрица символьных строк.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>res</term>
<listitem>
<para>матрица логических значений.</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Описание</title>
<para>
<code>res = isnum(str)</code> возвращает <constant>%t</constant>, если <varname>str</varname> представляет число.
</para>
</refsection>
<refsection>
<title>Примеры</title>
<programlisting role="example"><![CDATA[
isnum(['1' , ..
'-1.23' , ..
'+1e+23', ..
'1d+23' , ..
'A' , ..
'%pi'])
]]></programlisting>
</refsection>
<refsection role="see also">
<title>Смотрите также</title>
<simplelist type="inline">
<member>
<link linkend="isletter">isletter</link>
</member>
<member>
<link linkend="isdigit">isdigit</link>
</member>
<member>
<link linkend="isalphanum">isalphanum</link>
</member>
</simplelist>
</refsection>
</refentry>
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