<HTML ><HEAD ><TITLE >gmp_jacobi</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="GMP functions" HREF="ref.gmp.html"><LINK REL="PREVIOUS" TITLE="gmp_invert" HREF="function.gmp-invert.html"><LINK REL="NEXT" TITLE="gmp_legendre" HREF="function.gmp-legendre.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.gmp-invert.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.gmp-legendre.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.gmp-jacobi" ></A >gmp_jacobi</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN30062" ></A ><P > (PHP 4 >= 4.0.4)</P >gmp_jacobi -- Jacobi symbol</DIV ><DIV CLASS="refsect1" ><A NAME="AEN30065" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >gmp_jacobi</B > ( resource a, resource p)<BR ></BR ><P > Computes <A HREF="http://www.utm.edu/research/primes/glossary/JacobiSymbol.html" TARGET="_top" > Jacobi symbol</A > of <TT CLASS="parameter" ><I >a</I ></TT > and <TT CLASS="parameter" ><I >p</I ></TT >. <TT CLASS="parameter" ><I >p</I ></TT > should be odd and must be positive. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.gmp-invert.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.gmp-legendre.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >gmp_invert</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.gmp.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >gmp_legendre</TD ></TR ></TABLE ></DIV ></BODY ></HTML >