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<?xml version="1.0" encoding="UTF-8"?>
<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="en" xml:id="funptr">
<info>
<pubdate>$LastChangedDate$</pubdate>
</info>
<refnamediv>
<refname>funptr</refname>
<refpurpose> coding of primitives ( wizard stuff ) </refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>[numptr] = funptr(name)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term>name</term>
<listitem>
<para>a string, the name of a primitive</para>
</listitem>
</varlistentry>
<varlistentry>
<term>numptr</term>
<listitem>
<para>the internal routine number of the primitive</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Description</title>
<para>
Utility function (for experts only) to get the internal routine number <literal>numptr</literal>
of the primitive <literal>'name'</literal>. <literal>numptr</literal> is formed from the interface
number <literal>fun</literal> and the routine number <literal>fin</literal> of the primitive in its interface
by <literal>numptr = 1000*fun + fin</literal> (fin < 1000). From <literal>numptr</literal> you can get
the interface number <literal>fun = floor(numptr/1000)</literal> which may be useful to link a
dynamical interface with arguments passed by reference (see example section).</para>
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
// Suppose you want to load some codes via the dynamic
// loading facilities offers by addinter. By default
// arguments are passed by values but if you want to
// pass them by reference you can do the following
// (name being the scilab name of one of the interfaced
// routines) :
//
// addinter(files,spnames,fcts) // args passed by values
// num_interface = floor(funptr(name)/1000)
// intppty(num_interface) // args now passed by reference
//
// Note that if you enter the following
//
// intppty()
//
// you will see all the interfaces working by reference
]]></programlisting>
</refsection>
<refsection>
<title>See Also</title>
<simplelist type="inline">
<member>
<link linkend="clearfun">clearfun</link>
</member>
<member>
<link linkend="newfun">newfun</link>
</member>
<member>
<link linkend="intppty">intppty</link>
</member>
<member>
<link linkend="addinter">addinter</link>
</member>
</simplelist>
</refsection>
</refentry>
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