# PetscMapAppendOptionsPrefix

Appends to the prefix used for searching for all PetscMap options in the database.

### Synopsis

    #include "petscvec.h"
    PetscErrorCode PETSCVEC_DLLEXPORT PetscMapAppendOptionsPrefix(PetscMap map,const char prefix[])

Collective on PetscMap

### Input Parameters

| map | - the PetscMap context
| prefix | - the prefix to prepend to all option names

### Notes

A hyphen (-) must NOT be given at the beginning of the prefix name. The first character of all runtime options is AUTOMATICALLY the hyphen.

### Keywords

PetscMap, append, options, prefix, database

### See Also

PetscMapGetOptionsPrefix()

Level:advanced
Location:src/vec/interface/map.c
Index of all Vec routines
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