petsc-3.14.5 2021-03-03
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# VecGetOptionsPrefix

Sets the prefix used for searching for all Vec options in the database.

### Synopsis

    #include "petscvec.h"
    PetscErrorCode  VecGetOptionsPrefix(Vec v,const char *prefix[])

Not Collective

### Input Parameter

| v | - the Vec context

### Output Parameter

| prefix | - pointer to the prefix string used

### Notes

On the fortran side, the user should pass in a string 'prefix' of sufficient length to hold the prefix.

### See Also

VecAppendOptionsPrefix()

### Level

advanced

### Location

src/vec/vec/interface/vector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages