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<H1>EPSComputeRelativeErrorLeft</H1>
Computes the relative error bound associated with the i-th computed eigenvalue and left eigenvector (only available in two-sided eigensolvers).
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepceps.h"
PetscErrorCode EPSComputeRelativeErrorLeft(EPS eps,PetscInt i,PetscReal *error)
</PRE>
Collective on <A HREF="../EPS/EPS.html#EPS">EPS</A>
<P>
<H3><FONT COLOR="#883300">Input Parameter</FONT></H3>
<DT><B>eps </B> - the eigensolver context
<br>
<DT><B>i </B> - the solution index
<br>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<DT><B>error </B> - the relative error bound, computed as ||y'A-ky'B||_2/||ky||_2 where
k is the eigenvalue and y is the left eigenvector.
If k=0 the relative error is computed as ||y'A||_2/||y||_2.
<br>
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>(), <A HREF="../EPS/EPSComputeResidualNormLeft.html#EPSComputeResidualNormLeft">EPSComputeResidualNormLeft</A>(), <A HREF="../EPS/EPSGetErrorEstimateLeft.html#EPSGetErrorEstimateLeft">EPSGetErrorEstimateLeft</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/eps/interface/solve.c.html#EPSComputeRelativeErrorLeft">src/eps/interface/solve.c</A>
<BR><A HREF="./index.html">Index of all EPS routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/eps/examples/tutorials/ex12.c.html">src/eps/examples/tutorials/ex12.c.html</A><BR>
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