Function lua_isnumber

engine/lua/src/lua/lapi.c:260–264

LUA_API int lua_isnumber (lua_State *L, int idx) {
  TValue n;
  const TValue *o = index2adr(L, idx);
  return tonumber(o, &n);
}


LUA_API int lua_isstring (lua_State *L, int idx) {