1 /* Area: ffi_call
2 Purpose: Check return value double.
3 Limitations: none.
4 PR: none.
5 Originator: <andreast@gcc.gnu.org> 20050212 */
6
7 /* { dg-do run } */
8 #include "ffitest.h"
9
return_dbl(double dbl)10 static double return_dbl(double dbl)
11 {
12 return 2 * dbl;
13 }
main(void)14 int main (void)
15 {
16 ffi_cif cif;
17 ffi_type *args[MAX_ARGS];
18 void *values[MAX_ARGS];
19 double dbl, rdbl;
20
21 args[0] = &ffi_type_double;
22 values[0] = &dbl;
23
24 /* Initialize the cif */
25 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
26 &ffi_type_double, args) == FFI_OK);
27
28 for (dbl = -127.3; dbl < 127; dbl++)
29 {
30 ffi_call(&cif, FFI_FN(return_dbl), &rdbl, values);
31 printf ("%f vs %f\n", rdbl, return_dbl(dbl));
32 CHECK(rdbl == 2 * dbl);
33 }
34 exit(0);
35 }
36