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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<TITLE>KSPConvergedReason</TITLE>
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<A NAME="KSPConvergedReason"><H1>KSPConvergedReason</H1></A>
reason a Krylov method was said to have converged or diverged
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
typedef enum {/* converged */
KSP_CONVERGED_RTOL = 2,
KSP_CONVERGED_ATOL = 3,
KSP_CONVERGED_ITS = 4,
KSP_CONVERGED_STCG_NEG_CURVE = 5,
KSP_CONVERGED_STCG_CONSTRAINED = 6,
KSP_CONVERGED_STEP_LENGTH = 7,
KSP_CONVERGED_HAPPY_BREAKDOWN = 8,
/* diverged */
KSP_DIVERGED_NULL = -2,
KSP_DIVERGED_ITS = -3,
KSP_DIVERGED_DTOL = -4,
KSP_DIVERGED_BREAKDOWN = -5,
KSP_DIVERGED_BREAKDOWN_BICG = -6,
KSP_DIVERGED_NONSYMMETRIC = -7,
KSP_DIVERGED_INDEFINITE_PC = -8,
KSP_DIVERGED_NAN = -9,
KSP_DIVERGED_INDEFINITE_MAT = -10,
KSP_CONVERGED_ITERATING = 0} KSPConvergedReason;
</PRE>
<P>
Notes: this must match finclude/petscksp.h
<P>
Developer note: The string versions of these are in
src/ksp/ksp/interface/itfunc.c called convergedreasons.
If these enums are changed you must change those.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPSolve.html#KSPSolve">KSPSolve</A>(), <A HREF="../KSP/KSPGetConvergedReason.html#KSPGetConvergedReason">KSPGetConvergedReason</A>(), <A HREF="../KSP/KSPSetTolerances.html#KSPSetTolerances">KSPSetTolerances</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/../../../include/petscksp.h.html#KSPConvergedReason">src/ksp/ksp/../../../include/petscksp.h</A>
<BR><A HREF="./index.html">Index of all KSP 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/ex10.c.html">src/ksp/ksp/examples/tutorials/ex10.c.html</A><BR>
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