Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/return_fl.c Source File

Ruby 3.0.5p211 (2022-11-24 revision ba5cf0f7c52d4d35cc6a173c89eda98ceffa2dcf)

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
10static 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 */
25 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
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}
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
CHECK
#define CHECK(sub)
Definition: compile.c:429
ffitest.h
MAX_ARGS
#define MAX_ARGS
Definition: function.c:17
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
main
int main(void)
Definition: return_fl.c:14