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<div id="version" align=right><b>slepc-3.23.1 2025-05-01</b></div>
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<H1>NEPErrorView</H1>
Displays the errors associated with the computed solution (as well as the eigenvalues).
<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/NEPErrorView.html#NEPErrorView">NEPErrorView</A>(<A HREF="../NEP/NEP.html#NEP">NEP</A> nep,<A HREF="../NEP/NEPErrorType.html#NEPErrorType">NEPErrorType</A> etype,<A HREF="https://petsc.org/release/manualpages/Viewer/PetscViewer.html#PetscViewer">PetscViewer</A> viewer)
</PRE>
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> - the nonlinear eigensolver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>etype </B></TD><TD> - error type
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>viewer </B></TD><TD> - optional visualization context
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Options Database Keys</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_error_absolute </B></TD><TD> - print absolute errors of each eigenpair
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_error_relative </B></TD><TD> - print relative errors of each eigenpair
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_error_backward </B></TD><TD> - print backward errors of each eigenpair
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
By default, this function checks the error of all eigenpairs and prints
the eigenvalues if all of them are below the requested tolerance.
If the viewer has format=<A HREF="https://petsc.org/release/manualpages/Viewer/PetscViewerFormat.html#PetscViewerFormat">PETSC_VIEWER_ASCII_INFO_DETAIL</A> then a table with
eigenvalues and corresponding errors is printed.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../NEP/NEPSolve.html#NEPSolve">NEPSolve</A>(), <A HREF="../NEP/NEPValuesView.html#NEPValuesView">NEPValuesView</A>(), <A HREF="../NEP/NEPVectorsView.html#NEPVectorsView">NEPVectorsView</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/nep/interface/nepview.c.html#NEPErrorView">src/nep/interface/nepview.c</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/nep/tutorials/ex21.c.html">src/nep/tutorials/ex21.c</A><BR>
<A HREF="../../../src/nep/tutorials/ex22.c.html">src/nep/tutorials/ex22.c</A><BR>
<A HREF="../../../src/nep/tutorials/ex22f.F90.html">src/nep/tutorials/ex22f.F90</A><BR>
<A HREF="../../../src/nep/tutorials/ex27.c.html">src/nep/tutorials/ex27.c</A><BR>
<A HREF="../../../src/nep/tutorials/ex27f.F90.html">src/nep/tutorials/ex27f.F90</A><BR>
<A HREF="../../../src/nep/tutorials/ex54f.F90.html">src/nep/tutorials/ex54f.F90</A><BR>
<A HREF="../../../src/nep/tutorials/nlevp/gun.c.html">src/nep/tutorials/nlevp/gun.c</A><BR>
<A HREF="../../../src/nep/tutorials/nlevp/loaded_string.c.html">src/nep/tutorials/nlevp/loaded_string.c</A><BR>
<BR><BR><A HREF="./index.html">Index of all NEP routines</A>
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