Function libffi_sys::ffi_prep_cif_core

pub unsafe extern fn ffi_prep_cif_core(cif: *mut ffi_cif,
                                       abi: ffi_abi,
                                       isvariadic: c_uint,
                                       nfixedargs: c_uint,
                                       ntotalargs: c_uint,
                                       rtype: *mut ffi_type,
                                       atypes: *mut *mut ffi_type)
                                       -> ffi_status