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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PETSC_NULL"><H1>PETSC_NULL</H1></A>
standard way of passing in a null or array or pointer. This is deprecated in C/C++ simply use NULL
<P>
Notes: accepted by many PETSc functions to not set a parameter and instead use
some default
<P>
This macro does not exist in Fortran; you must use PETSC_NULL_INTEGER,
PETSC_NULL_DOUBLE_PRECISION, PETSC_NULL_FUNCTION, PETSC_NULL_OBJECT etc
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Sys/PETSC_DECIDE.html#PETSC_DECIDE">PETSC_DECIDE</A>, <A HREF="../Sys/PETSC_DEFAULT.html#PETSC_DEFAULT">PETSC_DEFAULT</A>, <A HREF="../Sys/PETSC_IGNORE.html#PETSC_IGNORE">PETSC_IGNORE</A>, <A HREF="../Sys/PETSC_DETERMINE.html#PETSC_DETERMINE">PETSC_DETERMINE</A>
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../include/petscsys.h.html#PETSC_NULL">include/petscsys.h</A>
<BR><A HREF="./index.html">Index of all Sys routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ts/examples/tutorials/ex30.cxx.html">src/ts/examples/tutorials/ex30.cxx.html</A><BR>
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