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<div id="version" align=right><b>slepc-3.23.1 2025-05-01</b></div>
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<H1>NEPSetStoppingTestFunction</H1>
Sets a function to decide when to stop the outer iteration of the eigensolver.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcnep.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../NEP/NEPSetStoppingTestFunction.html#NEPSetStoppingTestFunction">NEPSetStoppingTestFunction</A>(<A HREF="../NEP/NEP.html#NEP">NEP</A> nep,<A HREF="../NEP/NEPStoppingTestFn.html#NEPStoppingTestFn">NEPStoppingTestFn</A> *stop,void* ctx,<A HREF="https://petsc.org/release/manualpages/Sys/PetscCtxDestroyFn.html#PetscCtxDestroyFn">PetscCtxDestroyFn</A> *destroy)
</PRE>
Logically Collective
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nep </B></TD><TD> - nonlinear eigensolver context obtained from <A HREF="../NEP/NEPCreate.html#NEPCreate">NEPCreate</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>stop </B></TD><TD> - the stopping test function, see <A HREF="../NEP/NEPStoppingTestFn.html#NEPStoppingTestFn">NEPStoppingTestFn</A> for the calling sequence
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctx </B></TD><TD> - context for private data for the stopping routine (may be NULL)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>destroy </B></TD><TD> - a routine for destroying the context (may be NULL), see <A HREF="https://petsc.org/release/manualpages/Sys/PetscCtxDestroyFn.html#PetscCtxDestroyFn">PetscCtxDestroyFn</A> for the calling sequence
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Note</FONT></H3>
Normal usage is to first call the default routine <A HREF="../NEP/NEPStoppingBasic.html#NEPStoppingBasic">NEPStoppingBasic</A>() and then
set reason to <A HREF="../NEP/NEPConvergedReason.html#NEPConvergedReason">NEP_CONVERGED_USER</A> if some user-defined conditions have been
met. To let the eigensolver continue iterating, the result must be left as
<A HREF="../NEP/NEPConvergedReason.html#NEPConvergedReason">NEP_CONVERGED_ITERATING</A>.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../NEP/NEPSetStoppingTest.html#NEPSetStoppingTest">NEPSetStoppingTest</A>(), <A HREF="../NEP/NEPStoppingBasic.html#NEPStoppingBasic">NEPStoppingBasic</A>()
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/nep/interface/nepopts.c.html#NEPSetStoppingTestFunction">src/nep/interface/nepopts.c</A>
<BR><BR><A HREF="./index.html">Index of all NEP routines</A>
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