/js/src/ctypes/libffi/testsuite/libffi.call/return_fl.c

 1/* Area:	ffi_call
 2   Purpose:	Check return value float.
 3   Limitations:	none.
 4   PR:		none.
 5   Originator:	<andreast@gcc.gnu.org> 20050212  */
 6
 7/* { dg-do run } */
 8#include "ffitest.h"
 9
10static float return_fl(float fl)
11{
12  return 2 * fl;
13}
14int main (void)
15{
16  ffi_cif cif;
17  ffi_type *args[MAX_ARGS];
18  void *values[MAX_ARGS];
19  float fl, rfl;
20
21  args[0] = &ffi_type_float;
22  values[0] = &fl;
23
24  /* Initialize the cif */
25  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
26		     &ffi_type_float, args) == FFI_OK);
27
28  for (fl = -127.0; fl <  127; fl++)
29    {
30      ffi_call(&cif, FFI_FN(return_fl), &rfl, values);
31      printf ("%f vs %f\n", rfl, return_fl(fl));
32      CHECK(rfl ==  2 * fl);
33    }
34  exit(0);
35}