# QEPAppendOptionsPrefix

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

### Synopsis

    #include "slepcqep.h"
    PetscErrorCode QEPAppendOptionsPrefix(QEP qep,const char *prefix)

Logically Collective on QEP

### Input Parameters

| qep | - the quadratic eigensolver context
| prefix | - the prefix string to prepend to all QEP option requests

### 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.

### See Also

QEPSetOptionsPrefix(), QEPGetOptionsPrefix()

Location: src/qep/interface/qepopts.c
Index of all QEP routines
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Index of all manual pages