VecGetArrayReadF90#
Accesses a read only array from Fortran90. For default PETSc vectors, VecGetArrayF90() returns a pointer to the local data array. Otherwise, this routine is implementation dependent. You MUST call VecRestoreArrayReadF90() when you no longer need access to the array.
Synopsis#
VecGetArrayReadF90(Vec x,{Scalar, pointer :: xx_v(:)},integer ierr)
Logically Collective on Vec
Input Parameter#
x - vector
Output Parameters#
xx_v - the Fortran90 pointer to the array
ierr - error code
Example of Usage#
#include <petsc/finclude/petscvec.h>
use petscvec
PetscScalar, pointer :: xx_v(:)
....
call VecGetArrayReadF90(x,xx_v,ierr)
a = xx_v(3)
call VecRestoreArrayReadF90(x,xx_v,ierr)
If you intend to write entries into the array you must use VecGetArrayF90().
See Also#
VecRestoreArrayReadF90()
, VecGetArray()
, VecRestoreArray()
, VecGetArrayRead()
, VecRestoreArrayRead()
, VecGetArrayF90()
Level#
beginner
Location#
Examples#
src/snes/tutorials/ex73f90t.F90.html
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages