Ruby
2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)
ext
fiddle
libffi-3.2.1
testsuite
libffi.call
cls_double.c
Go to the documentation of this file.
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/* Area: closure_call
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Purpose: Check return value double.
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Limitations: none.
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PR: none.
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Originator: <andreast@gcc.gnu.org> 20030828 */
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/* { dg-do run } */
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#include "
ffitest.h
"
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static
void
cls_ret_double_fn(ffi_cif* cif
__UNUSED__
,
void
* resp,
void
** args,
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void
* userdata
__UNUSED__
)
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{
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*(
double
*)resp = *(
double
*)args[0];
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printf
(
"%f: %f\n"
,*(
double
*)args[0],
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*(
double
*)resp);
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}
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typedef
double
(*
cls_ret_double
)(
double
);
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int
main
(
void
)
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{
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ffi_cif cif;
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void
*code;
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ffi_closure *pcl = ffi_closure_alloc(
sizeof
(ffi_closure), &code);
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ffi_type * cl_arg_types[2];
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double
res;
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cl_arg_types[0] = &ffi_type_double;
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cl_arg_types[1] =
NULL
;
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/* Initialize the cif */
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CHECK
(
ffi_prep_cif
(&cif,
FFI_DEFAULT_ABI
, 1,
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&ffi_type_double, cl_arg_types) == FFI_OK);
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CHECK
(
ffi_prep_closure_loc
(pcl, &cif, cls_ret_double_fn,
NULL
, code) == FFI_OK);
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res = (*((
cls_ret_double
)code))(21474.789);
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/* { dg-output "21474.789000: 21474.789000" } */
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printf
(
"res: %.6f\n"
, res);
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/* { dg-output "\nres: 21474.789000" } */
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exit
(0);
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}
cls_ret_double
double(* cls_ret_double)(double)
Definition:
cls_double.c:18
main
int main(void)
Definition:
cls_double.c:20
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
NULL
#define NULL
Definition:
_sdbm.c:101
exit
void exit(int __status) __attribute__((__noreturn__))
ffitest.h
double
double
Definition:
rb_mjit_min_header-2.7.0.h:5923
__UNUSED__
#define __UNUSED__
Definition:
ffitest.h:28
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
ffi_prep_closure_loc
ffi_status ffi_prep_closure_loc(ffi_closure *closure, ffi_cif *cif, void(*fun)(ffi_cif *, void *, void **, void *), void *user_data, void *codeloc)
Definition:
ffi.c:928
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