1/* Area:	ffi_call
2   Purpose:	Check return value long double.
3   Limitations:	none.
4   PR:		none.
5   Originator:	From the original ffitest.c  */
6
7/* { dg-do run } */
8
9#include "ffitest.h"
10#include "float.h"
11
12static long double ldblit(float f)
13{
14  return (long double) (((long double) f)/ (long double) 3.0);
15}
16
17int main (void)
18{
19  ffi_cif cif;
20  ffi_type *args[MAX_ARGS];
21  void *values[MAX_ARGS];
22  float f;
23  long double ld;
24
25  args[0] = &ffi_type_float;
26  values[0] = &f;
27
28  /* Initialize the cif */
29  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
30		     &ffi_type_longdouble, args) == FFI_OK);
31
32  f = 3.14159;
33
34#if 1
35  /* This is ifdef'd out for now. long double support under SunOS/gcc
36     is pretty much non-existent.  You'll get the odd bus error in library
37     routines like printf().  */
38  printf ("%Lf\n", ldblit(f));
39#endif
40  ld = 666;
41  ffi_call(&cif, FFI_FN(ldblit), &ld, values);
42
43#if 1
44  /* This is ifdef'd out for now. long double support under SunOS/gcc
45     is pretty much non-existent.  You'll get the odd bus error in library
46     routines like printf().  */
47  printf ("%Lf, %Lf, %Lf, %Lf\n", ld, ldblit(f), ld - ldblit(f), LDBL_EPSILON);
48#endif
49
50  /* These are not always the same!! Check for a reasonable delta */
51  if (ld - ldblit(f) < LDBL_EPSILON)
52    puts("long double return value tests ok!");
53  else
54    CHECK(0);
55
56  exit(0);
57}
58