Function lua_pushcclosure

third-party/lua-5.2.4/src/lapi.c:555–574

LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
  lua_lock(L);
  if (n == 0) {
    setfvalue(L->top, fn);
  }
  else {
    Closure *cl;
    api_checknelems(L, n);
    api_check(L, n <= MAXUPVAL, "upvalue index too large");
    luaC_checkGC(L);
    cl = luaF_newCclosure(L, n);
    cl->c.f = fn;
    L->top -= n;
    while (n--)
      setobj2n(L, &cl->c.upvalue[n], L->top + n);
    setclCvalue(L, L->top, cl);
  }
  api_incr_top(L);
  lua_unlock(L);
}


LUA_API void lua_pushboolean (lua_State *L, int b) {