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path: root/contrib/restricted/libffi/testsuite/libffi.closures/cls_float.c
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/* Area:	closure_call 
   Purpose:	Check return value float. 
   Limitations:	none. 
   PR:		none. 
   Originator:	<andreast@gcc.gnu.org> 20030828	 */ 
 
/* { dg-do run } */ 
#include "ffitest.h" 
 
static void cls_ret_float_fn(ffi_cif* cif __UNUSED__, void* resp, void** args, 
			     void* userdata __UNUSED__) 
 { 
   *(float *)resp = *(float *)args[0]; 
 
   printf("%g: %g\n",*(float *)args[0], 
	  *(float *)resp); 
 } 
 
typedef float (*cls_ret_float)(float); 
 
int main (void) 
{ 
  ffi_cif cif; 
  void *code; 
  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code); 
  ffi_type * cl_arg_types[2]; 
  float res; 
 
  cl_arg_types[0] = &ffi_type_float; 
  cl_arg_types[1] = NULL; 
 
  /* Initialize the cif */ 
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, 
		     &ffi_type_float, cl_arg_types) == FFI_OK); 
 
  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_float_fn, NULL, code)  == FFI_OK); 
  res = ((((cls_ret_float)code)(-2122.12))); 
  /* { dg-output "\\-2122.12: \\-2122.12" } */ 
  printf("res: %.6f\n", res); 
  /* { dg-output "\nres: \-2122.120117" } */ 
  exit(0); 
}