Function lua_tonumber

third-party/lua-5.1.5/src/lapi.c:313–320

LUA_API lua_Number lua_tonumber (lua_State *L, int idx) {
  TValue n;
  const TValue *o = index2adr(L, idx);
  if (tonumber(o, &n))
    return nvalue(o);
  else
    return 0;
}


LUA_API lua_Integer lua_tointeger (lua_State *L, int idx) {