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# SNES_CONVERGED_SNORM_RELATIVE
The 2-norm of the last step <= stol * 2-norm(x) where x is the current solution and stol is the 4th argument to `SNESSetTolerances()` 
## Options Database Keys
-snes_stol <stol> - the step tolerance




## See Also
 [](ch_snes), `SNES`, `SNESSolve()`, `SNESGetConvergedReason()`, `SNESConvergedReason`, `SNESSetTolerances()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscsnes.h.html#SNES_CONVERGED_SNORM_RELATIVE">include/petscsnes.h</A>


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[Index of all SNES routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)