PETSc version 3.15.5
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# PetscOptionsLeftGet

Returns all options that were set and never used.

### Synopsis

    #include "petscsys.h"
    PetscErrorCode PetscOptionsLeftGet(PetscOptions options,PetscInt *N,char **names[],char **values[])

Not Collective

### Input Parameter

| options | - options database, use NULL for default global database

### Output Parameter

| N | - count of options not used
| names | - names of options not used
| values | - values of options not used

### Notes

Users should call PetscOptionsLeftRestore() to free the memory allocated in this routine Notes: The value returned may be different on each process and depends on which options have been processed on the given process

### See Also

PetscOptionsAllUsed(), PetscOptionsLeft()

### Level

advanced

### Location

src/sys/objects/options.c
Index of all Sys routines
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Index of all manual pages