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! { dg-do run }
! { dg-additional-sources c_f_pointer_complex_driver.c }
! { dg-options "-std=gnu -w" }
! Test c_f_pointer for the different types of interoperable complex values.
module c_f_pointer_complex
use, intrinsic :: iso_c_binding, only: c_float_complex, c_double_complex, &
c_long_double_complex, c_f_pointer, c_ptr, c_long_double, c_int
implicit none
contains
subroutine test_complex_scalars(my_c_float_complex, my_c_double_complex, &
my_c_long_double_complex) bind(c)
type(c_ptr), value :: my_c_float_complex
type(c_ptr), value :: my_c_double_complex
type(c_ptr), value :: my_c_long_double_complex
complex(c_float_complex), pointer :: my_f03_float_complex
complex(c_double_complex), pointer :: my_f03_double_complex
complex(c_long_double_complex), pointer :: my_f03_long_double_complex
call c_f_pointer(my_c_float_complex, my_f03_float_complex)
call c_f_pointer(my_c_double_complex, my_f03_double_complex)
call c_f_pointer(my_c_long_double_complex, my_f03_long_double_complex)
if(my_f03_float_complex /= (1.0, 0.0)) call abort ()
if(my_f03_double_complex /= (2.0d0, 0.0d0)) call abort ()
if(my_f03_long_double_complex /= (3.0_c_long_double, &
0.0_c_long_double)) call abort ()
end subroutine test_complex_scalars
subroutine test_complex_arrays(float_complex_array, double_complex_array, &
long_double_complex_array, num_elems) bind(c)
type(c_ptr), value :: float_complex_array
type(c_ptr), value :: double_complex_array
type(c_ptr), value :: long_double_complex_array
complex(c_float_complex), pointer, dimension(:) :: f03_float_complex_array
complex(c_double_complex), pointer, dimension(:) :: &
f03_double_complex_array
complex(c_long_double_complex), pointer, dimension(:) :: &
f03_long_double_complex_array
integer(c_int), value :: num_elems
integer :: i
call c_f_pointer(float_complex_array, f03_float_complex_array, &
(/ num_elems /))
call c_f_pointer(double_complex_array, f03_double_complex_array, &
(/ num_elems /))
call c_f_pointer(long_double_complex_array, &
f03_long_double_complex_array, (/ num_elems /))
do i = 1, num_elems
if(f03_float_complex_array(i) &
/= (i*(1.0, 0.0))) call abort ()
if(f03_double_complex_array(i) &
/= (i*(1.0d0, 0.0d0))) call abort ()
if(f03_long_double_complex_array(i) &
/= (i*(1.0_c_long_double, 0.0_c_long_double))) call abort ()
end do
end subroutine test_complex_arrays
end module c_f_pointer_complex
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