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<A NAME="KSPGetDiagonalScaleFix"><H1>KSPGetDiagonalScaleFix</H1></A>
Determines if <A HREF="../KSP/KSP.html#KSP">KSP</A> diagonally scales the system back after solving.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode PETSCKSP_DLLEXPORT KSPGetDiagonalScaleFix(KSP ksp,PetscTruth *fix)
</PRE>
Collective on <A HREF="../KSP/KSP.html#KSP">KSP</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>ksp </B> -the <A HREF="../KSP/KSP.html#KSP">KSP</A> context
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>fix </B> -<A HREF="../Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> to scale back after the system solve, <A HREF="../Sys/PETSC_FALSE.html#PETSC_FALSE">PETSC_FALSE</A> to not
rescale (default)
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
Must be called after <A HREF="../KSP/KSPSetDiagonalScale.html#KSPSetDiagonalScale">KSPSetDiagonalScale</A>()
<P>
If <A HREF="../Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> will slow things down, because it rescales the matrix before and
after each linear solve. This is intended mainly for testing to allow one
to easily get back the original system to make sure the solution computed is
accurate enough.
<P>
This routine is only used if the matrix and preconditioner matrix are
the same thing.
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../KSP/KSP.html#KSP">KSP</A>, set, options, prefix, database
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPGetDiagonalScale.html#KSPGetDiagonalScale">KSPGetDiagonalScale</A>(), <A HREF="../KSP/KSPSetDiagonalScale.html#KSPSetDiagonalScale">KSPSetDiagonalScale</A>(), <A HREF="../KSP/KSPSetDiagonalScaleFix.html#KSPSetDiagonalScaleFix">KSPSetDiagonalScaleFix</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/itfunc.c.html#KSPGetDiagonalScaleFix">src/ksp/ksp/interface/itfunc.c</A>
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