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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PETSC_IGNORE.html" />
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<TITLE>PETSC_IGNORE</TITLE>
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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.7.5 v3.7.5 docs/manualpages/Sys/PETSC_IGNORE.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PETSC_IGNORE"><H1>PETSC_IGNORE</H1></A>
same as NULL, means PETSc will ignore this argument
<P>
Note: accepted by many PETSc functions to not set a parameter and instead use
some default
<P>
Fortran Notes: This macro does not exist in Fortran; you must use PETSC_NULL_INTEGER,
PETSC_NULL_DOUBLE_PRECISION 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_NULL.html#PETSC_NULL">PETSC_NULL</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_IGNORE">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/snes/examples/tutorials/ex5.c.html">src/snes/examples/tutorials/ex5.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex7.c.html">src/snes/examples/tutorials/ex7.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex14.c.html">src/snes/examples/tutorials/ex14.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex15.c.html">src/snes/examples/tutorials/ex15.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex19.c.html">src/snes/examples/tutorials/ex19.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex22.c.html">src/snes/examples/tutorials/ex22.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex35.c.html">src/snes/examples/tutorials/ex35.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex58.c.html">src/snes/examples/tutorials/ex58.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex47cu.cu.html">src/snes/examples/tutorials/ex47cu.cu.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex7.c.html">src/ts/examples/tutorials/ex7.c.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex12.c.html">src/ts/examples/tutorials/ex12.c.html</A><BR>
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