gmp-sub.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.gmp-sub" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>gmp_sub</refname>
  <refpurpose>Subtract numbers</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>GMP</type><methodname>gmp_sub</methodname>
   <methodparam><type class="union"><type>GMP</type><type>int</type><type>string</type></type><parameter>num1</parameter></methodparam>
   <methodparam><type class="union"><type>GMP</type><type>int</type><type>string</type></type><parameter>num2</parameter></methodparam>
  </methodsynopsis>
  <para>
   Subtracts <parameter>num2</parameter> from <parameter>num1</parameter>
   and returns the result.
  </para>
 </refsect1>


 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>num1</parameter></term>
     <listitem>
      <para>
       The number being subtracted from.
      </para>
      &gmp.parameter; 
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>num2</parameter></term>
     <listitem>
      <para>
       The number subtracted from <parameter>num1</parameter>.
      </para>
      &gmp.parameter; 
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &gmp.return;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>gmp_sub</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$sub = gmp_sub("281474976710656", "4294967296"); // 2^48 - 2^32
echo gmp_strval($sub) . "\n";
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
281470681743360
]]>
    </screen>
   </example>
  </para>
 </refsect1>

</refentry>
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