petsc-3.7.3 2016-07-24
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# PetscOptionsClearValue

Clears an option name-value pair in the options database, overriding whatever is already present.

### Synopsis

    #include "petscsys.h"
    PetscErrorCode  PetscOptionsClearValue(PetscOptions options,const char iname[])

Not Collective, but setting values on certain processors could cause problems for parallel objects looking for options.

### Input Parameter

| options | - options database, use NULL for the default global database
| name | - name of option, this SHOULD have the - prepended

### See Also

PetscOptionsInsert()

Level:intermediate
Location: src/sys/objects/options.c
Index of all Sys routines
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Index of all manual pages