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<A NAME="SNES_DIVERGED_FNORM_NAN"><H1>SNES_DIVERGED_FNORM_NAN</H1></A>
the 2-norm of the current function evaluation is not-a-number (NaN), this is usually caused by a division of 0 by 0.
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<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../SNES/SNESSolve.html#SNESSolve">SNESSolve</A>(), <A HREF="../SNES/SNESGetConvergedReason.html#SNESGetConvergedReason">SNESGetConvergedReason</A>(), <A HREF="../SNES/SNESConvergedReason.html#SNESConvergedReason">SNESConvergedReason</A>, <A HREF="../SNES/SNESSetTolerances.html#SNESSetTolerances">SNESSetTolerances</A>()
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<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/snes/../../include/petscsnes.h.html#SNES_DIVERGED_FNORM_NAN">src/snes/../../include/petscsnes.h</A>
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