<?xml version="1.0" encoding="UTF-8"?>
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 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) 2008 - INRIA
 *
 * Copyright (C) 2012 - 2016 - Scilab Enterprises
 *
 * This file is hereby licensed under the terms of the GNU GPL v2.0,
 * pursuant to article 5.3.4 of the CeCILL v.2.1.
 * This file was originally licensed under the terms of the CeCILL v2.1,
 * and continues to be available under such terms.
 * For more information, see the COPYING file which you should have received
 * along with this program.
 *
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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:ns3="http://www.w3.org/1999/xhtml" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:id="cumprod" xml:lang="pt">
    <refnamediv>
        <refname>cumprod</refname>
        <refpurpose>produto cumulativo</refpurpose>
    </refnamediv>
    <refsynopsisdiv>
        <title>Seqüência de Chamamento</title>
        <synopsis>
          y = cumprod(x)
          y = cumprod(x, orientation)
          y = cumprod(x, outtype)
          y = cumprod(x, orientation, outtype)
        </synopsis>
    </refsynopsisdiv>
    <refsection>
        <title>Parâmetros</title>
        <variablelist>
            <varlistentry>
                <term>x</term>
                <listitem>
                    <para>vetor ou matriz de reais ou complexos </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>y</term>
                <listitem>
                    <para>vetor ou matriz de reais ou complexos</para>
                </listitem>
            </varlistentry>
        </variablelist>
    </refsection>
    <refsection>
        <title>Descrição</title>
        <para>
            Para um vetor ou matriz <literal>x</literal>,
            <literal>y=cumprod(x)</literal> retorna em <literal>y</literal> o produto
            cumulativo de todas as entradas de <literal>x</literal> tomadas coluna a
            coluna.
        </para>
        <para>
            <literal>y=cumprod(x,'c')</literal> (ou, equivalentemente,
            <literal>y=cumprod(x,2)</literal>) retorna em <literal>y</literal> o
            produto cumulativo dos elementos das colunas de <literal>x</literal>:
            <literal> y(i,:)=cumprod(x(i,:))</literal>
        </para>
        <para>
            <literal>y=cumprod(x,'r')</literal> (ou, equivalentemente,
            <literal>y=cumprod(x,2)</literal>) retorna em <literal>y</literal> o
            produto cumulativo dos elementos das linhas de <literal>x</literal>:
            <literal> y(:,i)=cumprod(x(:,i))</literal>.
        </para>
        <para>
            <literal>y=cumprod(x,'m')</literal> é o produto cumulativo ao longo
            da primeira dimensão não-singleton de <literal>x</literal> (para
            compatibilidade com Matlab).
        </para>
    </refsection>
    <refsection>
        <title>Exemplos</title>
        <programlisting role="example"><![CDATA[
A=[1,2;3,4];
cumprod(A)
cumprod(A,'r')
cumprod(A,'c')
rand('seed',0);
a=rand(3,4);
[m,n]=size(a);
w=zeros(a);
w(1,:)=a(1,:);
for k=2:m;w(k,:)=w(k-1,:).*a(k,:);end;w-cumprod(a,'r')
 ]]></programlisting>
    </refsection>
    <refsection role="see also">
        <title>Ver Também</title>
        <simplelist type="inline">
            <member>
                <link linkend="cumsum">cumsum</link>
            </member>
            <member>
                <link linkend="sum">sum</link>
            </member>
            <member>
                <link linkend="prod">prod</link>
            </member>
        </simplelist>
    </refsection>
</refentry>
