#include <stdlib.h>#include <stdio.h>#include <string.h>#include "lil/lil.h"#include "patchwerk/patchwerk.h"#include "core.h"#include "sklil.h"#include "osc.h" static lil_value_t osc(lil_t lil, size_t argc, lil_value_t *argv){    sk_core *core;    int rc;    core = lil_get_data(lil);     SKLIL_ARITY_CHECK(lil, "osc", argc, 4);     /* skip param 0 */    sklil_param(core, argv[1]);    sklil_param(core, argv[2]);    sklil_param(core, argv[3]);     rc = sk_node_osc(core);     if (rc) {        /* TODO: error handling */    }    return NULL;} void sklil_load_osc(lil_t lil){    lil_register(lil, "osc", osc);}