1! Program to test the FORALL construct
2program testforall
3   implicit none
4   integer, dimension (3, 3) :: a
5   integer, dimension (3) :: b
6   logical, dimension (3, 3) :: m, tr
7   integer i
8   character(len=9) line
9
10   a = reshape ((/1, 2, 3, 4, 5, 6, 7, 8, 9/), (/3, 3/));
11
12   tr = .true.
13
14   if (sum(a) .ne. 45) STOP 1
15   write (line, 9000) sum(a)
16   if (line .ne. ' 45      ') STOP 2
17   b = sum (a, 1)
18   if (b(1) .ne. 6) STOP 3
19   if (b(2) .ne. 15) STOP 4
20   if (b(3) .ne. 24) STOP 5
21   write (line, 9000) sum (a, 1)
22   if (line .ne. '  6 15 24') STOP 6
23
24   m = .true.
25   m(1, 1) = .false.
26   m(2, 1) = .false.
27
28   if (sum (a, mask=m) .ne. 42) STOP 7
29   if (sum (a, mask=m .and. tr) .ne. 42) STOP 8
30
31   write(line, 9000) sum (a, mask=m)
32   if (line .ne. ' 42      ') STOP 9
33
34   b = sum (a, 2, m)
35   if (b(1) .ne. 11) STOP 10
36   if (b(2) .ne. 13) STOP 11
37   if (b(3) .ne. 18) STOP 12
38
39   b = sum (a, 2, m .and. tr)
40   if (b(1) .ne. 11) STOP 13
41   if (b(2) .ne. 13) STOP 14
42   if (b(3) .ne. 18) STOP 15
43   write (line, 9000) sum (a, 2, m)
44   if (line .ne. ' 11 13 18') STOP 16
45
469000 format(3I3)
47end program
48