1/* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16#include "EndianUtil.h" 17 18bool EndianUtil::IsBigEndian() 19{ 20 const uint32_t ENDIAN_TEST_MAGIC = 0x01020304; 21 const uint32_t BIG_ENDIAN_FIRST_BYTE = 0x1; 22 union { 23 uint32_t data; 24 char buffer[sizeof(uint32_t)]; 25 } test = {ENDIAN_TEST_MAGIC}; 26 27 return test.buffer[0] == BIG_ENDIAN_FIRST_BYTE; 28} 29