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<div id="version" align=right><b>slepc-3.22.2 2024-12-02</b></div>
<div id="bugreport" align=right><a href="mailto:slepc-maint@upv.es?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: slepc-3.22.2 v3.22.2 docs/manualpages/EPS/EPSGetConvergedReason.html "><small>Report Typos and Errors</small></a></div>
<H1>EPSGetConvergedReason</H1>
Gets the reason why the <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>() iteration was stopped.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepceps.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../EPS/EPSGetConvergedReason.html#EPSGetConvergedReason">EPSGetConvergedReason</A>(<A HREF="../EPS/EPS.html#EPS">EPS</A> eps,<A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPSConvergedReason</A> *reason)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#883300">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>eps </B></TD><TD> - the eigensolver context
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>reason </B></TD><TD> - negative value indicates diverged, positive value converged
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Options Database Key</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-eps_converged_reason </B></TD><TD> - print the reason to a viewer
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
Possible values for reason are
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPS_CONVERGED_TOL</A> </B></TD><TD> - converged up to tolerance
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPS_CONVERGED_USER</A> </B></TD><TD> - converged due to a user-defined condition
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPS_DIVERGED_ITS</A> </B></TD><TD> - required more than max_it iterations to reach convergence
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPS_DIVERGED_BREAKDOWN</A> </B></TD><TD> - generic breakdown in method
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPS_DIVERGED_SYMMETRY_LOST</A> </B></TD><TD> - pseudo-Lanczos was not able to keep symmetry
</TD></TR></TABLE>
<P>
Can only be called after the call to <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>() is complete.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSSetTolerances.html#EPSSetTolerances">EPSSetTolerances</A>(), <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>(), <A HREF="../EPS/EPSConvergedReason.html#EPSConvergedReason">EPSConvergedReason</A>
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/eps/interface/epssolve.c.html#EPSGetConvergedReason">src/eps/interface/epssolve.c</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/eps/tutorials/ex29.c.html">src/eps/tutorials/ex29.c</A><BR>
<BR><BR><A HREF="./index.html">Index of all EPS routines</A>
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<BR><A HREF="../singleindex.html">Index of all manual pages</A>
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