| module testmod | |
| implicit none | |
| contains | |
| subroutine foo(n) | |
| integer, intent(in) :: n | |
| real :: r(0:n,-n:n), a(0:n,-n:n), dj | |
| integer :: k, j | |
| ! initialize with some dummy values | |
| do j = -n, n | |
| a(:, j) = j | |
| r(:,j) = j + 1 | |
| end do | |
| ! here be dragons | |
| do k = 0, n | |
| dj = r(k, k - 2) * a(k, k - 2) | |
| r(k,k) = a(k, k - 1) * dj | |
| enddo | |
| if (r(0,0) .ne. -2.) STOP 1 | |
| end subroutine | |
| end module | |
| program test | |
| use testmod | |
| implicit none | |
| call foo(5) | |
| end program |