libffi/testsuite/libffi.call/cls_float.c

   1 /* Area:        closure_call
   2    Purpose:     Check return value float.
   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_float_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  11                              void* userdata __UNUSED__)
  12  {
  13    *(float *)resp = *(float *)args[0];
  14
  15    printf("%g: %g\n",*(float *)args[0],
  16           *(float *)resp);
  17  }
  18
  19 typedef float (*cls_ret_float)(float);
  20
  21 int main (void)
  22 {
  23   ffi_cif cif;
  24 #ifndef USING_MMAP
  25   static ffi_closure cl;
  26 #endif
  27   ffi_closure *pcl;
  28   ffi_type * cl_arg_types[2];
  29   float res;
  30
  31 #ifdef USING_MMAP
  32   pcl = allocate_mmap (sizeof(ffi_closure));
  33 #else
  34   pcl = &cl;
  35 #endif
  36
  37
  38   cl_arg_types[0] = &ffi_type_float;
  39   cl_arg_types[1] = NULL;
  40
  41   /* Initialize the cif */
  42   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  43                      &ffi_type_float, cl_arg_types) == FFI_OK);
  44
  45   CHECK(ffi_prep_closure(pcl, &cif, cls_ret_float_fn, NULL)  == FFI_OK);
  46   res = ((((cls_ret_float)pcl)(-2122.12)));
  47   /* { dg-output "\\-2122.12: \\-2122.12" } */
  48   printf("res: %.6f\n", res);
  49   /* { dg-output "\nres: \-2122.120117" } */
  50   exit(0);
  51 }