ffi_prep_cif_var - Online Linux Manual PageSection : 3
Updated : January 25, 2011

NAME ffi_prep_cif_var Prepare a ffi_cif structure for use with ffi_call for variadic functions.

SYNOPSIS #include <ffi.h>
ffi_status ffi_prep_cif_var ( ffi_cif *cif , ffi_abi abi , unsigned int nfixedargs , unsigned int ntotalargs , ffi_type *rtype , ffi_type **atypes );

DESCRIPTIONThe ffi_prep_cif_var function prepares a ffi_cif structure for use with ffi_call for variadic functions. abi specifies a set of calling conventions to use. atypes is an array of ntotalargs 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. nfixedargs must contain the number of fixed (non-variadic) arguments. Note that to call a non-variadic function ffi_prep_cif must be used.

RETURN VALUESUpon successful completion, ffi_prep_cif_var 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 ALSOffi(3), ffi_call(3), ffi_prep_cif(3)
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