# PCRichardsonConvergedReason
reason a `PCRICHARDSON` `PCApplyRichardson()` method terminated 
## Synopsis
```
typedef enum {
  PCRICHARDSON_CONVERGED_RTOL = 2,
  PCRICHARDSON_CONVERGED_ATOL = 3,
  PCRICHARDSON_CONVERGED_ITS  = 4,
  PCRICHARDSON_DIVERGED_DTOL  = -4
} PCRichardsonConvergedReason;
```



## Developer Note
this must match petsc/finclude/petscpc.h and the `KSPConvergedReason` values in petscksp.h


## See Also
 [](sec_pc), `PCRICHARDSON`, `PC`, `PCApplyRichardson()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscpctypes.h.html#PCRichardsonConvergedReason">include/petscpctypes.h</A>


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