libffi/testsuite/libffi.call/return_ldl.c

   1 /* Area:        ffi_call
   2    Purpose:     Check return value long double.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <andreast@gcc.gnu.org> 20071113  */
   6
   7 /* { dg-do run { xfail x86_64-*-mingw* x86_64-*-cygwin* } } */
   8 #include "ffitest.h"
   9
  10 static long double return_ldl(long double ldl)
  11 {
  12   return 2*ldl;
  13 }
  14 int main (void)
  15 {
  16   ffi_cif cif;
  17   ffi_type *args[MAX_ARGS];
  18   void *values[MAX_ARGS];
  19   long double ldl, rldl;
  20
  21   args[0] = &ffi_type_longdouble;
  22   values[0] = &ldl;
  23
  24   /* Initialize the cif */
  25   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  26                      &ffi_type_longdouble, args) == FFI_OK);
  27
  28   for (ldl = -127.0; ldl <  127.0; ldl++)
  29     {
  30       ffi_call(&cif, FFI_FN(return_ldl), &rldl, values);
  31       CHECK(rldl ==  2 * ldl);
  32     }
  33   exit(0);
  34 }