php-doc-en/reference/gmp/functions/gmp-scan0.xml
2004-02-26 11:14:11 +00:00

69 lines
1.8 KiB
XML

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<!-- splitted from ./en/functions/gmp.xml, last change in rev 1.1 -->
<refentry id="function.gmp-scan0">
<refnamediv>
<refname>gmp_scan0</refname>
<refpurpose>Scan for 0</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>gmp_scan0</methodname>
<methodparam><type>resource</type><parameter>a</parameter></methodparam>
<methodparam><type>int</type><parameter>start</parameter></methodparam>
</methodsynopsis>
<para>
Scans <parameter>a</parameter>, starting with bit
<parameter>start</parameter>, towards more significant bits,
until the first clear bit is found. Returns the index of the
found bit. The index starts from 0.
</para>
<example>
<title><function>gmp_scan0</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// "0" bit is found at position 3. index starts at 0
$s1 = gmp_init("10111", 2);
echo gmp_scan0($s1, 0) . "\n";
// "0" bit is found at position 7. index starts at 5
$s2 = gmp_init("101110000", 2);
echo gmp_scan0($s2, 5) . "\n";
?>
]]>
</programlisting>
<para>
The printout of the above program will be:
</para>
<screen>
<![CDATA[
3
7
]]>
</screen>
</example>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"../../../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->