<?xml version="1.0" encoding="UTF-8"?>
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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:ns5="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="squarewave" xml:lang="pt">
    <refnamediv>
        <refname>squarewave</refname>
        <refpurpose>gera uma onda quadrada de período 2*%pi</refpurpose>
    </refnamediv>
    <refsynopsisdiv>
        <title>Seqüência de Chamamento</title>
        <synopsis>x=squarewave(t [,percent])</synopsis>
    </refsynopsisdiv>
    <refsection role="parameters">
        <title>Parâmetros</title>
        <variablelist>
            <varlistentry>
                <term>t</term>
                <listitem>
                    <para>vetor de reais, discretização do tempo </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>x</term>
                <listitem>
                    <para>vetor de reais, o valor da onda em cada ponto do tempo no
                        conjunto (-1,+1)
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>percent</term>
                <listitem>
                    <para>escalar real positivo, a porcentagem do período no qual o
                        sinal é positivo. O valor padrão é 50
                    </para>
                </listitem>
            </varlistentry>
        </variablelist>
    </refsection>
    <refsection role="description">
        <title>Descrição</title>
        <para>
            <literal>squarewave(t)</literal> gera o vetor dos valores da onda
            quadrada de período 2*%pi em cada data dada no vetor <literal>t</literal>
            .
        </para>
        <para>
            <literal>squarewave(t,%)</literal> gera uma onda quadrada tal que %
            é a porcentagem do período no qual o sinal é positivo.
        </para>
    </refsection>
    <refsection role="examples">
        <title>Exemplos</title>
        <programlisting role="example"><![CDATA[
t = (0:0.1:5*%pi)';
plot2d(t, [2*sin(t), 1.5*squarewave(t), squarewave(t,10)])
 ]]></programlisting>
    </refsection>
    <refsection role="see also">
        <title>Ver Também</title>
        <simplelist type="inline">
            <member>
                <link linkend="sin">sin</link>
            </member>
            <member>
                <link linkend="cos">cos</link>
            </member>
        </simplelist>
    </refsection>
</refentry>
