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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PCASASetTolerances"><H1>PCASASetTolerances</H1></A>
Sets the convergence thresholds for ASA algorithm
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
PetscErrorCode PCASASetTolerances(PC pc, PetscReal rtol, PetscReal abstol,PetscReal dtol, PetscInt maxits)
</PRE>
Collective on <A HREF="../PC/PC.html#PC">PC</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>pc </B></TD><TD>- the context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>rtol </B></TD><TD>- the relative convergence tolerance
(relative decrease in the residual norm)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>abstol </B></TD><TD>- the absolute convergence tolerance
(absolute size of the residual norm)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dtol </B></TD><TD>- the divergence tolerance
(amount residual can increase before <A HREF="../KSP/KSPDefaultConverged.html#KSPDefaultConverged">KSPDefaultConverged</A>()
concludes that the method is diverging)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>maxits </B></TD><TD>- maximum number of iterations to use
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
Use <A HREF="../Sys/PETSC_DEFAULT.html#PETSC_DEFAULT">PETSC_DEFAULT</A> to retain the default value of any of the tolerances.
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/impls/asa/asa.c.html#PCASASetTolerances">src/ksp/pc/impls/asa/asa.c</A>
<BR><A HREF="./index.html">Index of all PC 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/ksp/ksp/examples/tutorials/ex38.c.html">src/ksp/ksp/examples/tutorials/ex38.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex39.c.html">src/ksp/ksp/examples/tutorials/ex39.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex40.c.html">src/ksp/ksp/examples/tutorials/ex40.c.html</A><BR>
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