VecGetArrayF90#
Accesses a vector array from Fortran. For default PETSc vectors, VecGetArrayF90()
returns a pointer to the local data array. Otherwise, this routine is implementation dependent. You MUST call VecRestoreArrayF90()
when you no longer need access to the array.
Synopsis#
VecGetArrayF90(Vec x,{Scalar, pointer :: xx_v(:)},integer ierr)
Logically Collective
Input Parameter#
x - vector
Output Parameters#
xx_v - the Fortran pointer to the array
ierr - error code
Example of Usage#
#include <petsc/finclude/petscvec.h>
use petscvec
PetscScalar, pointer :: xx_v(:)
....
call VecGetArrayF90(x,xx_v,ierr)
xx_v(3) = a
call VecRestoreArrayF90(x,xx_v,ierr)
Note#
If you ONLY intend to read entries from the array and not change any entries you should use VecGetArrayReadF90()
.
See Also#
Vectors and Parallel Data, Vec
, VecRestoreArrayF90()
, VecGetArray()
, VecRestoreArray()
, VecGetArrayReadF90()
Level#
beginner
Location#
Examples#
src/ksp/ksp/tutorials/ex14f.F90
src/snes/tutorials/ex1f.F90
src/snes/tutorials/ex5f.F90
src/snes/tutorials/ex5f90.F90
src/snes/tutorials/ex5f90t.F90
src/snes/tutorials/ex73f90t.F90
src/tao/bound/tutorials/plate2f.F90
src/tao/leastsquares/tutorials/chwirut1f.F90
src/tao/leastsquares/tutorials/chwirut2f.F90
src/tao/unconstrained/tutorials/rosenbrock1f.F90
src/ts/tutorials/ex1f.F90
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages