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<?xml version="1.0" encoding="utf-8"?>

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<!-- $Revision$ -->

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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.gmp-random-bits">

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<refnamediv>

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<refname>gmp_random_bits</refname>

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<refpurpose>Random number</refpurpose>

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</refnamediv>

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<refsect1 role="description">

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&reftitle.description;

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<methodsynopsis>

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<type>GMP</type><methodname>gmp_random_bits</methodname>

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<methodparam><type>integer</type><parameter>bits</parameter></methodparam>

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</methodsynopsis>

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<para>

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Generate a random number. The number will be between

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0 and (2 ** <parameter>bits</parameter>) - 1.

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</para>

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<para>

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<parameter>bits</parameter> must greater than 0, and the maximum value is restricted by available memory.

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</para>

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</refsect1>

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<refsect1 role="parameters">

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&reftitle.parameters;

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<para>

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<variablelist>

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<varlistentry>

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<term><parameter>bits</parameter></term>

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<listitem>

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<para>

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The number of bits.

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</para>

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&gmp.parameter;

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</listitem>

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</varlistentry>

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</variablelist>

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</para>

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</refsect1>

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<refsect1 role="returnvalues">

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&reftitle.returnvalues;

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<para>

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A random GMP number.

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</para>

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</refsect1>

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<refsect1 role="examples">

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&reftitle.examples;

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<para>

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<example>

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<title><function>gmp_random_bits</function> example</title>

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<programlisting role="php">

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<![CDATA[

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<?php

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$rand1 = gmp_random_bits(3); // random number from 0 to 7

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$rand2 = gmp_random_bits(5); // random number from 0 to 31

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echo gmp_strval($rand1) . "\n";

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echo gmp_strval($rand2) . "\n";

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?>

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]]>

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</programlisting>

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&example.outputs;

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<screen>

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<![CDATA[

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]]>

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</screen>

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</example>

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</para>

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</refsect1>

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</refentry>

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