slepc-3.18.1 2022-11-02
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# DSSetIdentity

Copy the identity (a diagonal matrix with ones) on the active part of a matrix.

### Synopsis

    #include "slepcds.h"
    PetscErrorCode DSSetIdentity(DS ds,DSMatType mat)

Logically Collective on ds

### Input Parameters

| ds | - the direct solver context
| mat | - the matrix to modify

### See Also

DSGetMat()

### Level

intermediate

### Location

src/sys/classes/ds/interface/dspriv.c
Index of all DS routines
Table of Contents for all manual pages
Index of all manual pages