PETSc version 3.17.0
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# VecGetArrayReadAndMemType

Like VecGetArrayRead(), but if the input vector is a device vector, it will return a read-only device pointer. The returned pointer is guarenteed to point to up-to-date data. For host vectors, it functions as VecGetArrayRead().

### Synopsis

    #include "petscvec.h"
    PetscErrorCode VecGetArrayReadAndMemType(Vec x,const PetscScalar **a,PetscMemType *mtype)

Not Collective

### Input Parameter

| x | - the vector

### Output Parameters

| a | - the array
| mtype | - memory type of the array

### Notes

The array must be returned using a matching call to VecRestoreArrayReadAndMemType().

### See Also

VecRestoreArrayReadAndMemType(), VecGetArrayAndMemType(), VecGetArrayWriteAndMemType(), VecGetArray(), VecRestoreArray(), VecGetArrayPair(), VecRestoreArrayPair(), VecGetArrayAndMemType()

### Level

beginner

### Location

src/vec/vec/interface/rvector.c
Index of all Vec routines
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Index of all manual pages