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6b8c53f2 AB |
1 | ! Copyright 2020 Free Software Foundation, Inc. |
2 | ! | |
3 | ! This program is free software; you can redistribute it and/or modify | |
4 | ! it under the terms of the GNU General Public License as published by | |
5 | ! the Free Software Foundation; either version 2 of the License, or | |
6 | ! (at your option) any later version. | |
7 | ! | |
8 | ! This program is distributed in the hope that it will be useful, | |
9 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | ! GNU General Public License for more details. | |
12 | ! | |
13 | ! You should have received a copy of the GNU General Public License | |
14 | ! along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | ||
16 | module type_module | |
17 | use, intrinsic :: iso_c_binding, only: c_int, c_float, c_double | |
18 | type, bind(C) :: MyType | |
19 | real(c_float) :: a | |
20 | real(c_float) :: b | |
21 | end type MyType | |
22 | end module type_module | |
23 | ||
24 | program mixed_stack_main | |
25 | implicit none | |
26 | ||
27 | ! Set up some locals. | |
28 | ||
29 | ! Call a Fortran function. | |
30 | call mixed_func_1a | |
31 | ||
32 | write(*,*) "All done" | |
33 | end program mixed_stack_main | |
34 | ||
35 | subroutine breakpt () | |
36 | implicit none | |
37 | write(*,*) "Hello World" ! Break here. | |
38 | end subroutine breakpt | |
39 | ||
40 | subroutine mixed_func_1a() | |
41 | use type_module | |
42 | implicit none | |
43 | ||
44 | TYPE(MyType) :: obj | |
45 | complex(kind=4) :: d | |
46 | ||
47 | obj%a = 1.5 | |
48 | obj%b = 2.5 | |
49 | d = cmplx (4.0, 5.0) | |
50 | ||
51 | ! Call a C function. | |
52 | call mixed_func_1b (1, 2.0, 3D0, d, "abcdef", obj) | |
53 | end subroutine mixed_func_1a | |
54 | ||
55 | ! This subroutine is called from the Fortran code. | |
56 | subroutine mixed_func_1b(a, b, c, d, e, g) | |
57 | use type_module | |
58 | implicit none | |
59 | ||
60 | integer :: a | |
61 | real(kind=4) :: b | |
62 | real(kind=8) :: c | |
63 | complex(kind=4) :: d | |
64 | character(len=*) :: e | |
65 | character(len=:), allocatable :: f | |
66 | TYPE(MyType) :: g | |
67 | ||
68 | interface | |
69 | subroutine mixed_func_1c (a, b, c, d, f, g) bind(C) | |
70 | use, intrinsic :: iso_c_binding, only: c_int, c_float, c_double | |
71 | use, intrinsic :: iso_c_binding, only: c_float_complex, c_char | |
72 | use type_module | |
73 | implicit none | |
74 | integer(c_int), value, intent(in) :: a | |
75 | real(c_float), value, intent(in) :: b | |
76 | real(c_double), value, intent(in) :: c | |
77 | complex(c_float_complex), value, intent(in) :: d | |
78 | character(c_char), intent(in) :: f(*) | |
79 | TYPE(MyType) :: g | |
80 | end subroutine mixed_func_1c | |
81 | end interface | |
82 | ||
83 | ! Create a copy of the string with a NULL terminator on the end. | |
84 | f = e//char(0) | |
85 | ||
86 | ! Call a C function. | |
87 | call mixed_func_1c (a, b, c, d, f, g) | |
88 | end subroutine mixed_func_1b | |
89 | ||
90 | ! This subroutine is called from the C code. | |
91 | subroutine mixed_func_1d(a, b, c, d, str) | |
92 | use, intrinsic :: iso_c_binding, only: c_int, c_float, c_double | |
93 | use, intrinsic :: iso_c_binding, only: c_float_complex | |
94 | implicit none | |
95 | integer(c_int) :: a | |
96 | real(c_float) :: b | |
97 | real(c_double) :: c | |
98 | complex(c_float_complex) :: d | |
99 | character(len=*) :: str | |
100 | ||
101 | interface | |
102 | subroutine mixed_func_1e () bind(C) | |
103 | implicit none | |
104 | end subroutine mixed_func_1e | |
105 | end interface | |
106 | ||
107 | write(*,*) a, b, c, d, str | |
108 | ||
109 | ! Call a C++ function (via an extern "C" wrapper). | |
110 | call mixed_func_1e | |
111 | end subroutine mixed_func_1d | |
112 | ||
113 | ! This is called from C++ code. | |
114 | subroutine mixed_func_1h () | |
115 | call breakpt | |
116 | end subroutine mixed_func_1h |