Ruby  2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)
return_fl.c
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1 /* Area: ffi_call
2  Purpose: Check return value float.
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 float return_fl(float fl)
11 {
12  return 2 * fl;
13 }
14 int main (void)
15 {
16  ffi_cif cif;
17  ffi_type *args[MAX_ARGS];
18  void *values[MAX_ARGS];
19  float fl, rfl;
20 
21  args[0] = &ffi_type_float;
22  values[0] = &fl;
23 
24  /* Initialize the cif */
26  &ffi_type_float, args) == FFI_OK);
27 
28  for (fl = -127.0; fl < 127; fl++)
29  {
30  ffi_call(&cif, FFI_FN(return_fl), &rfl, values);
31  printf ("%f vs %f\n", rfl, return_fl(fl));
32  CHECK(rfl == 2 * fl);
33  }
34  exit(0);
35 }
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
exit
void exit(int __status) __attribute__((__noreturn__))
main
int main(void)
Definition: return_fl.c:14
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
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813