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! { dg-do run }
module e_51_5_mod
contains
subroutine init (v1, v2, N)
integer :: i, N
real :: v1(N), v2(N)
do i = 1, N
v1(i) = i + 2.0
v2(i) = i - 3.0
end do
end subroutine
subroutine check (p, N)
integer :: i, N
real, parameter :: EPS = 0.00001
real :: diff, p(N)
do i = 1, N
diff = p(i) - (i + 2.0) * (i - 3.0)
if (diff > EPS .or. -diff > EPS) stop 1
end do
end subroutine
subroutine foo (p, v1, v2, N)
real, dimension(:) :: p, v1, v2
integer :: N
call init (v1, v2, N)
!$omp target data map(to: v1, v2, N) map(from: p)
call vec_mult (p, v1, v2, N)
!$omp end target data
call check (p, N)
end subroutine
subroutine vec_mult (p, v1, v2, N)
real, dimension(:) :: p, v1, v2
integer :: i, N
!$omp target map(to: v1, v2, N) map(from: p)
!$omp parallel do
do i = 1, N
p(i) = v1(i) * v2(i)
end do
!$omp end target
end subroutine
end module
program e_51_5
use e_51_5_mod, only : foo
integer, parameter :: N = 1024
real, allocatable, dimension(:) :: p, v1, v2
allocate(p(N), v1(N), v2(N))
call foo (p, v1, v2, N)
deallocate (p, v1, v2)
end program
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