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<div id="version" align=right><b>slepc-3.22.2 2024-12-02</b></div>
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<H1>EPSGetIterationNumber</H1>
Gets the current iteration number. If the call to <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>() is complete, then it returns the number of iterations carried out by the solution method.
<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/EPSGetIterationNumber.html#EPSGetIterationNumber">EPSGetIterationNumber</A>(<A HREF="../EPS/EPS.html#EPS">EPS</A> eps,<A HREF="https://petsc.org/release/manualpages/Sys/PetscInt.html#PetscInt">PetscInt</A> *its)
</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>its </B></TD><TD> - number of iterations
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Note</FONT></H3>
During the i-th iteration this call returns i-1. If <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>() is
complete, then parameter "its" contains either the iteration number at
which convergence was successfully reached, or failure was detected.
Call <A HREF="../EPS/EPSGetConvergedReason.html#EPSGetConvergedReason">EPSGetConvergedReason</A>() to determine if the solver converged or
failed and why.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSGetConvergedReason.html#EPSGetConvergedReason">EPSGetConvergedReason</A>(), <A HREF="../EPS/EPSSetTolerances.html#EPSSetTolerances">EPSSetTolerances</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#EPSGetIterationNumber">src/eps/interface/epssolve.c</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/eps/tutorials/ex1.c.html">src/eps/tutorials/ex1.c</A><BR>
<A HREF="../../../src/eps/tutorials/ex4.c.html">src/eps/tutorials/ex4.c</A><BR>
<A HREF="../../../src/eps/tutorials/ex6f.F90.html">src/eps/tutorials/ex6f.F90</A><BR>
<A HREF="../../../src/eps/tutorials/ex7.c.html">src/eps/tutorials/ex7.c</A><BR>
<A HREF="../../../src/eps/tutorials/ex19.c.html">src/eps/tutorials/ex19.c</A><BR>
<A HREF="../../../src/eps/tutorials/ex31.c.html">src/eps/tutorials/ex31.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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