petsc-3.4.2 2013-07-02

# SNESNormType

Norm that is passed in the Krylov convergence test routines.

### Synopsis

    typedef enum {SNES_NORM_DEFAULT            = -1,
                  SNES_NORM_NONE               =  0,
                  SNES_NORM_FUNCTION           =  1,
                  SNES_NORM_INITIAL_ONLY       =  2,
                  SNES_NORM_FINAL_ONLY         =  3,
                  SNES_NORM_INITIAL_FINAL_ONLY =  4} SNESNormType;

Support for these is highly dependent on the solver.

### Notes

This is primarily used to turn off extra norm and function computation when the solvers are composed.

### See Also

SNESSolve(), SNESGetConvergedReason(), KSPSetNormType(),
KSPSetConvergenceTest(), KSPSetPCSide()

Level:advanced
Location: src/snes/../../include/petscsnes.h
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages