libffi/testsuite/libffi.call/return_dbl1.c

   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
  10 static double return_dbl(double dbl1, float fl2, unsigned int in3, double dbl4)
  11 {
  12   return dbl1 + fl2 + in3 + dbl4;
  13 }
  14 int main (void)
  15 {
  16   ffi_cif cif;
  17   ffi_type *args[MAX_ARGS];
  18   void *values[MAX_ARGS];
  19   double dbl1, dbl4, rdbl;
  20   float fl2;
  21   unsigned int in3;
  22   args[0] = &ffi_type_double;
  23   args[1] = &ffi_type_float;
  24   args[2] = &ffi_type_uint;
  25   args[3] = &ffi_type_double;
  26   values[0] = &dbl1;
  27   values[1] = &fl2;
  28   values[2] = &in3;
  29   values[3] = &dbl4;
  30
  31   /* Initialize the cif */
  32   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4,
  33                      &ffi_type_double, args) == FFI_OK);
  34   dbl1 = 127.0;
  35   fl2 = 128.0;
  36   in3 = 255;
  37   dbl4 = 512.7;
  38
  39   ffi_call(&cif, FFI_FN(return_dbl), &rdbl, values);
  40   printf ("%f vs %f\n", rdbl, return_dbl(dbl1, fl2, in3, dbl4));
  41   CHECK(rdbl ==  dbl1 + fl2 + in3 + dbl4);
  42   exit(0);
  43 }