libgomp/testsuite/libgomp.fortran/examples-4/target-3.f90

   1 ! { dg-do run }
   2
   3 module e_50_3_mod
   4 contains
   5   subroutine init (v1, v2, N)
   6     integer :: i, N
   7     real :: v1(N), v2(N)
   8     do i = 1, N
   9       v1(i) = i + 2.0
  10       v2(i) = i - 3.0
  11     end do
  12   end subroutine
  13
  14   subroutine check (p, N)
  15     integer :: i, N
  16     real, parameter :: EPS = 0.00001
  17     real :: diff, p(N)
  18     do i = 1, N
  19       diff = p(i) - (i + 2.0) * (i - 3.0)
  20       if (diff > EPS .or. -diff > EPS) stop 1
  21     end do
  22   end subroutine
  23
  24   subroutine vec_mult (N)
  25     integer :: i, N
  26     real :: p(N), v1(N), v2(N)
  27     call init (v1, v2, N)
  28     !$omp target map(to: v1,v2) map(from: p)
  29       !$omp parallel do
  30       do i = 1, N
  31         p(i) = v1(i) * v2(i)
  32       end do
  33     !$omp end target
  34     call check (p, N)
  35   end subroutine
  36 end module
  37
  38 program e_50_3
  39   use e_50_3_mod, only : vec_mult
  40   integer :: n
  41   n = 1000
  42   call vec_mult (n)
  43 end program