PETSc version 3.17.4
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# ISEqualUnsorted

Compares if two index sets have the same indices.

### Synopsis

    #include "petscis.h"
    PetscErrorCode  ISEqualUnsorted(IS is1,IS is2,PetscBool  *flg)

Collective on IS

### Input Parameters

| is1, is2 | - The index sets being compared

### Output Parameters

| flg | - output flag, either PETSC_TRUE (if both index sets have the same indices), or PETSC_FALSE if the index sets differ by size or by the set of indices)

### Note

Unlike ISEqual(), this routine does NOT sort the contents of the index sets before the comparison is made, i.e., the order of indices is important.

### See Also

ISEqual()

### Level

intermediate

### Location

src/vec/is/is/utils/iscomp.c
Index of all IS routines
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Index of all manual pages