1  /* Area:	closure_call
       2     Purpose:	Check return value double.
       3     Limitations:	none.
       4     PR:		none.
       5     Originator:	<andreast@gcc.gnu.org> 20030828	 */
       6  
       7  /* { dg-do run } */
       8  #include "ffitest.h"
       9  
      10  static void cls_ret_double_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      11  			      void* userdata __UNUSED__)
      12   {
      13     *(double *)resp = *(double *)args[0];
      14  
      15     printf("%f: %f\n",*(double *)args[0],
      16  	  *(double *)resp);
      17   }
      18  typedef double (*cls_ret_double)(double);
      19  
      20  int main (void)
      21  {
      22    ffi_cif cif;
      23    void *code;
      24    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
      25    ffi_type * cl_arg_types[2];
      26    double res;
      27  
      28    cl_arg_types[0] = &ffi_type_double;
      29    cl_arg_types[1] = NULL;
      30  
      31    /* Initialize the cif */
      32    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
      33  		     &ffi_type_double, cl_arg_types) == FFI_OK);
      34  
      35    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_double_fn, NULL, code)  == FFI_OK);
      36  
      37    res = (*((cls_ret_double)code))(21474.789);
      38    /* { dg-output "21474.789000: 21474.789000" } */
      39    printf("res: %.6f\n", res);
      40    /* { dg-output "\nres: 21474.789000" } */
      41  
      42    exit(0);
      43  }