1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="https://slepc.upv.es/documentation/current//Users/jroman/tmp/slepc-3.23.1/docs/manualpages/NEP/NEPSolve.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<link rel="stylesheet" href="/slepc.css" type="text/css">
<TITLE>NEPSolve</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>slepc-3.23.1 2025-05-01</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-3.23.1 v3.23.1 /Users/jroman/tmp/slepc-3.23.1/docs/manualpages/NEP/NEPSolve.html "><small>Report Typos and Errors</small></a></div>
<H1>NEPSolve</H1>
Solves the nonlinear eigensystem.
<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/NEPSolve.html#NEPSolve">NEPSolve</A>(<A HREF="../NEP/NEP.html#NEP">NEP</A> nep)
</PRE>
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>nep </B></TD><TD> - eigensolver context obtained from <A HREF="../NEP/NEPCreate.html#NEPCreate">NEPCreate</A>()
</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_view </B></TD><TD> - print information about the solver used
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_view_matk </B></TD><TD> - view the split form matrix Ak (replace k by an integer from 0 to nt-1)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_view_fnk </B></TD><TD> - view the split form function fk (replace k by an integer from 0 to nt-1)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_view_vectors </B></TD><TD> - view the computed eigenvectors
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_view_values </B></TD><TD> - view the computed eigenvalues
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-nep_converged_reason </B></TD><TD> - print reason for convergence, and number of iterations
</TD></TR>
<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>
All the command-line options listed above admit an optional argument specifying
the viewer type and options. For instance, use '-nep_view_vectors binary:myvecs.bin'
to save the eigenvectors to a binary file, '-nep_view_values draw' to draw the computed
eigenvalues graphically, or '-nep_error_relative :myerr.m:ascii_matlab' to save
the errors in a file that can be executed in Matlab.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../NEP/NEPCreate.html#NEPCreate">NEPCreate</A>(), <A HREF="../NEP/NEPSetUp.html#NEPSetUp">NEPSetUp</A>(), <A HREF="../NEP/NEPDestroy.html#NEPDestroy">NEPDestroy</A>(), <A HREF="../NEP/NEPSetTolerances.html#NEPSetTolerances">NEPSetTolerances</A>()
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>beginner<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/nep/interface/nepsolve.c.html#NEPSolve">src/nep/interface/nepsolve.c</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/nep/tutorials/ex20.c.html">src/nep/tutorials/ex20.c</A><BR>
<A HREF="../../../src/nep/tutorials/ex20f.F90.html">src/nep/tutorials/ex20f.F90</A><BR>
<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/ex42.c.html">src/nep/tutorials/ex42.c</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>
<BR><A HREF="../../../docs/manual.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
</BODY></HTML>
|
