Ruby  2.7.1p83(2020-03-31revisiona0c7c23c9cec0d0ffcba012279cd652d28ad5bf3)
return_dbl2.c
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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, double dbl2, unsigned int in3, double dbl4)
11 {
12  return dbl1 + dbl2 + 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, dbl2, dbl4, rdbl;
20  unsigned int in3;
21  args[0] = &ffi_type_double;
22  args[1] = &ffi_type_double;
23  args[2] = &ffi_type_uint;
24  args[3] = &ffi_type_double;
25  values[0] = &dbl1;
26  values[1] = &dbl2;
27  values[2] = &in3;
28  values[3] = &dbl4;
29 
30  /* Initialize the cif */
32  &ffi_type_double, args) == FFI_OK);
33  dbl1 = 127.0;
34  dbl2 = 128.0;
35  in3 = 255;
36  dbl4 = 512.7;
37 
38  ffi_call(&cif, FFI_FN(return_dbl), &rdbl, values);
39  printf ("%f vs %f\n", rdbl, return_dbl(dbl1, dbl2, in3, dbl4));
40  CHECK(rdbl == dbl1 + dbl2 + in3 + dbl4);
41  exit(0);
42 }
ffitest.h
CHECK
#define CHECK(sub)
Definition: compile.c:448
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
ffi_prep_cif
ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:226
MAX_ARGS
#define MAX_ARGS
Definition: function.c:15
exit
void exit(int __status) __attribute__((__noreturn__))
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
main
int main(void)
Definition: return_dbl2.c:14