gcc/testsuite/gfortran.fortran-torture/execute/elemental.f90

   1 ! Program to test elemental functions.
   2 program test_elemental
   3    implicit none
   4    integer, dimension (2, 4) :: a
   5    integer, dimension (2, 4) :: b
   6    integer(kind = 8), dimension(2) :: c
   7
   8    a = reshape ((/2, 3, 4, 5, 6, 7, 8, 9/), (/2, 4/))
   9    b = 0
  10    b(2, :) = e_fn (a(1, :), 1)
  11    if (any (b .ne. reshape ((/0, 1, 0, 3, 0, 5, 0, 7/), (/2, 4/)))) call abort
  12    a = e_fn (a(:, 4:1:-1), 1 + b)
  13    if (any (a .ne. reshape ((/7, 7, 5, 3, 3, -1, 1, -5/), (/2, 4/)))) call abort
  14    ! This tests intrinsic elemental conversion functions.
  15    c = 2 * a(1, 1)
  16    if (any (c .ne. 14)) call abort
  17
  18    ! This triggered bug due to building ss chains in the wrong order.
  19    b = 0;
  20    a = a - e_fn (a, b)
  21    if (any (a .ne. 0)) call abort
  22
  23    ! Check expressions involving constants
  24    a = e_fn (b + 1, 1)
  25    if (any (a .ne. 0)) call abort
  26 contains
  27
  28 elemental integer(kind=4) function e_fn (p, q)
  29    integer, intent(in) :: p, q
  30    e_fn = p - q
  31 end function
  32 end program