ffi_prep_cif(3) Introduction to Library Functions ffi_prep_cif(3)

NAME

ffi_prep_cif - Prepare a ffi_cif structure for use with ffi_call

SYNOPSIS

#include <ffi.h>

ffi_status
ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs,
ffi_type *rtype, ffi_type **atypes);

DESCRIPTION

The ffi_prep_cif function prepares a ffi_cif structure for use with
ffi_call abi specifies a set of calling conventions to use. atypes is
an array of nargs pointers to ffi_type structs that describe the data
type, size and alignment of each argument. rtype points to an ffi_type
that describes the data type, size and alignment of the return value.
Note that to call a variadic function ffi_prep_cif_var must be used
instead.

RETURN VALUES

Upon successful completion, ffi_prep_cif returns FFI_OK. It will
return FFI_BAD_TYPEDEF if cif is NULL or atypes or rtype is malformed.
If abi does not refer to a valid ABI, FFI_BAD_ABI will be returned.
Available ABIs are defined in <ffitarget.h>.

SEE ALSO

ffi(3), ffi_call(3), ffi_prep_cif_var(3)

February 15, 2008