ffi_prepare

NAME

ffi_prepare() - describe a C function signature for calling

SYNOPSIS

int ffi_prepare( int lib, string name, int ret_type, int *arg_types );

DESCRIPTION

Resolves `name` in `lib`, builds the platform call frame for the
described signature, and returns a callable function handle for
ffi_call(). `ret_type` and each element of `arg_types` are type codes
from <ffi.h> (FFI_INT32, FFI_DOUBLE, FFI_POINTER, ...).

Gated by the master apply valid_ffi("prepare", name, caller). Errors
if the symbol is missing or a type code is invalid.

SEE ALSO

ffi_call(3), ffi_load(3), ffi_sizeof(3), valid_ffi(4)