| ! Program to test elemental functions. |
| program test_elemental |
| implicit none |
| integer(kind = 4), dimension (2, 4) :: a |
| integer(kind = 4), dimension (2, 4) :: b |
| integer(kind = 8), dimension(2) :: c |
| |
| a = reshape ((/2, 3, 4, 5, 6, 7, 8, 9/), (/2, 4/)) |
| b = 0 |
| b(2, :) = e_fn (a(1, :), 1) |
| if (any (b .ne. reshape ((/0, 1, 0, 3, 0, 5, 0, 7/), (/2, 4/)))) call abort |
| a = e_fn (a(:, 4:1:-1), 1 + b) |
| if (any (a .ne. reshape ((/7, 7, 5, 3, 3, -1, 1, -5/), (/2, 4/)))) call abort |
| ! This tests intrinsic elemental conversion functions. |
| c = 2 * a(1, 1) |
| if (any (c .ne. 14)) call abort |
| |
| ! This triggered bug due to building ss chains in the wrong order. |
| b = 0; |
| a = a - e_fn (a, b) |
| if (any (a .ne. 0)) call abort |
| |
| ! Check expressions involving constants |
| a = e_fn (b + 1, 1) |
| if (any (a .ne. 0)) call abort |
| contains |
| |
| elemental integer function e_fn (p, q) |
| integer, intent(in) :: p, q |
| e_fn = p - q |
| end function |
| end program |
