/usr/lib/petscdir/3.4.2/include/petsccusp.h is in libpetsc3.4.2-dev 3.4.2.dfsg1-8.1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | #if !defined(__PETSCCUSP_H)
#define __PETSCCUSP_H
#include <petscsys.h>
#include <petscmath.h>
#include <petscvec.h>
#include <cusp/array1d.h>
PETSC_EXTERN PetscErrorCode VecCUSPGetArrayReadWrite(Vec v, cusp::array1d<PetscScalar,cusp::device_memory> **a);
PETSC_EXTERN PetscErrorCode VecCUSPRestoreArrayReadWrite(Vec v, cusp::array1d<PetscScalar,cusp::device_memory> **a);
PETSC_EXTERN PetscErrorCode VecCUSPGetArrayRead(Vec v, cusp::array1d<PetscScalar,cusp::device_memory> **a);
PETSC_EXTERN PetscErrorCode VecCUSPRestoreArrayRead(Vec v, cusp::array1d<PetscScalar,cusp::device_memory> **a);
PETSC_EXTERN PetscErrorCode VecCUSPGetArrayWrite(Vec v, cusp::array1d<PetscScalar,cusp::device_memory> **a);
PETSC_EXTERN PetscErrorCode VecCUSPRestoreArrayWrite(Vec v, cusp::array1d<PetscScalar,cusp::device_memory> **a);
#endif
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