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https://github.com/autc04/Retro68.git
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69 lines
1.2 KiB
Fortran
69 lines
1.2 KiB
Fortran
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! { dg-do run }
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module e_53_4_mod
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!$omp declare target (N, Q)
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integer, parameter :: N = 10
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real :: Q(N,N)
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contains
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real function Pfun (i, k)
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!$omp declare target
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integer, intent(in) :: i, k
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Pfun = (Q(i,k) * Q(k,i))
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end function
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end module
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real function accum (k) result (tmp)
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use e_53_4_mod
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integer :: i, k
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tmp = 0.0e0
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!$omp target
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!$omp parallel do reduction(+:tmp)
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do i = 1, N
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tmp = tmp + Pfun (k, i)
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end do
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!$omp end target
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end function
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real function accum_ref (k) result (tmp)
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use e_53_4_mod
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integer :: i, k
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tmp = 0.0e0
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do i = 1, N
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tmp = tmp + Pfun (k, i)
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end do
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end function
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subroutine init ()
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use e_53_4_mod
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integer :: i, j
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do i = 1, N
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do j = 1, N
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Q(i,j) = 0.001 * i * j
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end do
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end do
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end subroutine
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subroutine check (a, b)
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real :: a, b, err
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real, parameter :: EPS = 0.00001
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if (b == 0.0) then
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err = a
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else if (a == 0.0) then
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err = b
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else
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err = (a - b) / b
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end if
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if (err > EPS .or. err < -EPS) call abort
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end subroutine
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program e_53_4
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use e_53_4_mod
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integer :: i
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real :: accum, accum_ref
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call init ()
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!$omp target update to(Q)
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do i = 1, N
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call check (accum (i), accum_ref (i))
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end do
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end program
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