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program elemental_10
implicit none
real, dimension(1) :: array_param
real :: scalar_param, expected_ans, epsilon = 1.0e-6
real, dimension(1) :: result_2param
real, dimension(1) :: result_3param
array_param = [1.0]
scalar_param = 1.0
expected_ans = 2.0
print *, "Testing 2-parameter elemental function:"
result_2param = func2(array_param, array_param)
if (any(abs(result_2param - 2.0) > epsilon)) then
error stop "Array, Array does not match 1.0"
end if
result_2param = func2(array_param, scalar_param)
if (any(abs(result_2param - expected_ans) > epsilon)) then
error stop "Array, Scalar does not match 1.0"
end if
result_2param = func2(scalar_param, array_param)
if (any(abs(result_2param - expected_ans) > epsilon)) then
error stop "Scalar, Array does not match 1.0"
end if
result_2param = func2(scalar_param, scalar_param)
if (abs(result_2param(1) - expected_ans) > epsilon) then
error stop "Scalar, Scalar does not match 1.0"
end if
print *, "\nTesting 3-parameter elemental function:"
result_3param = func3(array_param, array_param, array_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Array, Array, Array does not match 1.0"
end if
result_3param = func3(array_param, array_param, scalar_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Array, Array, Scalar does not match 1.0"
end if
result_3param = func3(array_param, scalar_param, array_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Array, Scalar, Array does not match 1.0"
end if
result_3param = func3(array_param, scalar_param, scalar_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Array, Scalar, Scalar does not match 1.0"
end if
result_3param = func3(scalar_param, array_param, array_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Scalar, Array, Array does not match 1.0"
end if
result_3param = func3(scalar_param, array_param, scalar_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Scalar, Array, Scalar does not match 1.0"
end if
result_3param = func3(scalar_param, scalar_param, array_param)
if (any(abs(result_3param - expected_ans) > epsilon)) then
error stop "Scalar, Scalar, Array does not match 1.0"
end if
result_3param = func3(scalar_param, scalar_param, scalar_param)
if (abs(result_3param(1) - expected_ans) > epsilon) then
error stop "Scalar, Scalar, Scalar does not match 1.0"
end if
contains
elemental function func2(x, y) result(res)
real, intent(in) :: x, y
real :: res
res = x + y
end function func2
elemental function func3(x, y, z) result(res)
real, intent(in) :: x, y, z
real :: res
res = x * y + z
end function func3
end program elemental_10
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