1ffi_prep_cif_var(3)      BSD Library Functions Manual      ffi_prep_cif_var(3)
2

NAME

4     ffi_prep_cif_var — Prepare a ffi_cif structure for use with ffi_call for
5     variadic functions.
6

SYNOPSIS

8     #include <ffi.h>
9
10     ffi_status
11     ffi_prep_cif_var(ffi_cif *cif, ffi_abi abi, unsigned int nfixedargs,
12         unsigned int ntotalargs, ffi_type *rtype, ffi_type **atypes);
13

DESCRIPTION

15     The ffi_prep_cif_var function prepares a ffi_cif structure for use with
16     ffi_call for variadic functions.  abi specifies a set of calling conven‐
17     tions to use.  atypes is an array of ntotalargs pointers to ffi_type
18     structs that describe the data type, size and alignment of each argument.
19     rtype points to an ffi_type that describes the data type, size and align‐
20     ment of the return value.  nfixedargs must contain the number of fixed
21     (non-variadic) arguments.  Note that to call a non-variadic function
22     ffi_prep_cif must be used.
23

RETURN VALUES

25     Upon successful completion, ffi_prep_cif_var returns FFI_OK.  It will
26     return FFI_BAD_TYPEDEF if cif is NULL or atypes or rtype is malformed. If
27     abi does not refer to a valid ABI, FFI_BAD_ABI will be returned. Avail‐
28     able ABIs are defined in <ffitarget.h>
29

SEE ALSO

31     ffi(3), ffi_call(3), ffi_prep_cif(3)
32
33                               January 25, 2011
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