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<A NAME="KSPGetResidualNorm"><H1>KSPGetResidualNorm</H1></A>
Gets the last (approximate preconditioned) residual norm that has been computed.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode PETSCKSP_DLLEXPORT KSPGetResidualNorm(KSP ksp,PetscReal *rnorm)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<DT><B>ksp </B> -the iterative context
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<DT><B>rnorm </B> -residual norm
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../KSP/KSP.html#KSP">KSP</A>, get, residual norm
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPBuildResidual.html#KSPBuildResidual">KSPBuildResidual</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/interface/iterativ.c.html#KSPGetResidualNorm">src/ksp/ksp/interface/iterativ.c</A>
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