Imported File#ftype spec from rubyspecs.
[rbx.git] / shotgun / external_libs / libffi / testsuite / libffi.call / cls_double.c
blobee77adde6a08e3deb83ba0c03be6714c0c104a07
1 /* Area: closure_call
2 Purpose: Check return value double.
3 Limitations: none.
4 PR: none.
5 Originator: <andreast@gcc.gnu.org> 20030828 */
7 /* { dg-do run } */
8 #include "ffitest.h"
10 static void cls_ret_double_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
11 void* userdata __UNUSED__)
13 *(double *)resp = *(double *)args[0];
15 printf("%f: %f\n",*(double *)args[0],
16 *(double *)resp);
18 typedef double (*cls_ret_double)(double);
20 int main (void)
22 ffi_cif cif;
23 #ifndef USING_MMAP
24 static ffi_closure cl;
25 #endif
26 ffi_closure *pcl;
27 ffi_type * cl_arg_types[2];
28 double res;
30 #ifdef USING_MMAP
31 pcl = allocate_mmap (sizeof(ffi_closure));
32 #else
33 pcl = &cl;
34 #endif
36 cl_arg_types[0] = &ffi_type_double;
37 cl_arg_types[1] = NULL;
39 /* Initialize the cif */
40 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
41 &ffi_type_double, cl_arg_types) == FFI_OK);
43 CHECK(ffi_prep_closure(pcl, &cif, cls_ret_double_fn, NULL) == FFI_OK);
45 res = (*((cls_ret_double)pcl))(21474.789);
46 /* { dg-output "21474.789000: 21474.789000" } */
47 printf("res: %.6f\n", res);
48 /* { dg-output "\nres: 21474.789000" } */
50 exit(0);